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Auto merge of #114875 - Zalathar:line-numbers, r=ozkanonur 

coverage: Anonymize line numbers in `run-coverage` test snapshots

LLVM's coverage reporter always prints line numbers in its coverage reports.

For testing purposes this is slightly inconvenient, because it means that adding or removing a line in a test file causes all subsequent lines in the snapshot to change. That makes it harder to see the actually meaningful changes in the re-blessed snapshot.

---

This change fixes that by adding another normalization pass that replaces all line numbers in the coverage reports with `LL`, which is similar to what UI tests tell the compiler to do when emitting line numbers in error messages.
This commit is contained in:
bors 2023-08-17 05:33:42 +00:00
parent c5833f1956 bfb16545a3
commit aa864a7622
46 changed files with 2672 additions and 2655 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
src/tools/compiletest/src/runtest.rs
View File

@ -18,6 +18,7 @@ use crate::ColorConfig;
use regex::{Captures, Regex};
use rustfix::{apply_suggestions, get_suggestions_from_json, Filter};
use std::borrow::Cow;
use std::collections::hash_map::DefaultHasher;
use std::collections::{HashMap, HashSet};
use std::env;
@ -664,6 +665,7 @@ impl<'test> TestCx<'test> {
fn normalize_coverage_output(&self, coverage: &str) -> Result<String, String> {
let normalized = self.normalize_output(coverage, &[]);
let normalized = Self::anonymize_coverage_line_numbers(&normalized);
let mut lines = normalized.lines().collect::<Vec<_>>();
@ -674,6 +676,21 @@ impl<'test> TestCx<'test> {
Ok(joined_lines)
}
/// Replace line numbers in coverage reports with the placeholder `LL`,
/// so that the tests are less sensitive to lines being added/removed.
fn anonymize_coverage_line_numbers(coverage: &str) -> Cow<'_, str> {
// The coverage reporter prints line numbers at the start of a line.
// They are truncated or left-padded to occupy exactly 5 columns.
// (`LineNumberColumnWidth` in `SourceCoverageViewText.cpp`.)
// A pipe character `|` appears immediately after the final digit.
//
// Line numbers that appear inside expansion/instantiation subviews
// have an additional prefix of ` |` for each nesting level.
static LINE_NUMBER_RE: Lazy<Regex> =
Lazy::new(|| Regex::new(r"(?m:^)(?<prefix>(?: \|)*) *[0-9]+\|").unwrap());
LINE_NUMBER_RE.replace_all(coverage, "$prefix LL|")
}
/// Coverage reports can describe multiple source files, separated by
/// blank lines. The order of these files is unpredictable (since it
/// depends on implementation details), so we need to sort the file

216
tests/run-coverage-rustdoc/doctest.coverage
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@ -1,115 +1,115 @@
$DIR/auxiliary/doctest_crate.rs:
1| |/// A function run only from within doctests
2| 3|pub fn fn_run_in_doctests(conditional: usize) {
3| 3| match conditional {
4| 1| 1 => assert_eq!(1, 1), // this is run,
5| 1| 2 => assert_eq!(1, 1), // this,
6| 1| 3 => assert_eq!(1, 1), // and this too
7| 0| _ => assert_eq!(1, 2), // however this is not
8| | }
9| 3|}
LL| |/// A function run only from within doctests
LL| 3|pub fn fn_run_in_doctests(conditional: usize) {
LL| 3| match conditional {
LL| 1| 1 => assert_eq!(1, 1), // this is run,
LL| 1| 2 => assert_eq!(1, 1), // this,
LL| 1| 3 => assert_eq!(1, 1), // and this too
LL| 0| _ => assert_eq!(1, 2), // however this is not
LL| | }
LL| 3|}
$DIR/doctest.rs:
1| |//! This test ensures that code from doctests is properly re-mapped.
2| |//! See <https://github.com/rust-lang/rust/issues/79417> for more info.
3| |//!
4| |//! Just some random code:
5| 1|//! ```
6| 1|//! if true {
7| |//! // this is executed!
8| 1|//! assert_eq!(1, 1);
9| |//! } else {
10| |//! // this is not!
11| 0|//! assert_eq!(1, 2);
12| |//! }
13| 1|//! ```
14| |//!
15| |//! doctest testing external code:
16| |//! ```
17| 1|//! extern crate doctest_crate;
18| 1|//! doctest_crate::fn_run_in_doctests(1);
19| 1|//! ```
20| |//!
21| |//! doctest returning a result:
22| 1|//! ```
23| 2|//! #[derive(Debug, PartialEq)]
LL| |//! This test ensures that code from doctests is properly re-mapped.
LL| |//! See <https://github.com/rust-lang/rust/issues/79417> for more info.
LL| |//!
LL| |//! Just some random code:
LL| 1|//! ```
LL| 1|//! if true {
LL| |//! // this is executed!
LL| 1|//! assert_eq!(1, 1);
LL| |//! } else {
LL| |//! // this is not!
LL| 0|//! assert_eq!(1, 2);
LL| |//! }
LL| 1|//! ```
LL| |//!
LL| |//! doctest testing external code:
LL| |//! ```
LL| 1|//! extern crate doctest_crate;
LL| 1|//! doctest_crate::fn_run_in_doctests(1);
LL| 1|//! ```
LL| |//!
LL| |//! doctest returning a result:
LL| 1|//! ```
LL| 2|//! #[derive(Debug, PartialEq)]
^1
24| 1|//! struct SomeError {
25| 1|//! msg: String,
26| 1|//! }
27| 1|//! let mut res = Err(SomeError { msg: String::from("a message") });
28| 1|//! if res.is_ok() {
29| 0|//! res?;
30| |//! } else {
31| 1|//! if *res.as_ref().unwrap_err() == *res.as_ref().unwrap_err() {
32| 1|//! println!("{:?}", res);
33| 1|//! }
LL| 1|//! struct SomeError {
LL| 1|//! msg: String,
LL| 1|//! }
LL| 1|//! let mut res = Err(SomeError { msg: String::from("a message") });
LL| 1|//! if res.is_ok() {
LL| 0|//! res?;
LL| |//! } else {
LL| 1|//! if *res.as_ref().unwrap_err() == *res.as_ref().unwrap_err() {
LL| 1|//! println!("{:?}", res);
LL| 1|//! }
^0
34| 1|//! if *res.as_ref().unwrap_err() == *res.as_ref().unwrap_err() {
35| 1|//! res = Ok(1);
36| 1|//! }
LL| 1|//! if *res.as_ref().unwrap_err() == *res.as_ref().unwrap_err() {
LL| 1|//! res = Ok(1);
LL| 1|//! }
^0
37| 1|//! res = Ok(0);
38| |//! }
39| |//! // need to be explicit because rustdoc cant infer the return type
40| 1|//! Ok::<(), SomeError>(())
41| 1|//! ```
42| |//!
43| |//! doctest with custom main:
44| |//! ```
45| 1|//! fn some_func() {
46| 1|//! println!("called some_func()");
47| 1|//! }
48| |//!
49| 0|//! #[derive(Debug)]
50| |//! struct SomeError;
51| |//!
52| |//! extern crate doctest_crate;
53| |//!
54| 1|//! fn doctest_main() -> Result<(), SomeError> {
55| 1|//! some_func();
56| 1|//! doctest_crate::fn_run_in_doctests(2);
57| 1|//! Ok(())
58| 1|//! }
59| |//!
60| |//! // this `main` is not shown as covered, as it clashes with all the other
61| |//! // `main` functions that were automatically generated for doctests
62| |//! fn main() -> Result<(), SomeError> {
63| |//! doctest_main()
64| |//! }
65| |//! ```
66| |// aux-build:doctest_crate.rs
67| |/// doctest attached to fn testing external code:
68| |/// ```
69| 1|/// extern crate doctest_crate;
70| 1|/// doctest_crate::fn_run_in_doctests(3);
71| 1|/// ```
72| |///
73| 1|fn main() {
74| 1| if true {
75| 1| assert_eq!(1, 1);
76| | } else {
77| 0| assert_eq!(1, 2);
78| | }
79| 1|}
80| |
81| |// FIXME(Swatinem): Fix known issue that coverage code region columns need to be offset by the
82| |// doc comment line prefix (`///` or `//!`) and any additional indent (before or after the doc
83| |// comment characters). This test produces `llvm-cov show` results demonstrating the problem.
84| |//
85| |// One of the above tests now includes: `derive(Debug, PartialEq)`, producing an `llvm-cov show`
86| |// result with a distinct count for `Debug`, denoted by `^1`, but the caret points to the wrong
87| |// column. Similarly, the `if` blocks without `else` blocks show `^0`, which should point at, or
88| |// one character past, the `if` block's closing brace. In both cases, these are most likely off
89| |// by the number of characters stripped from the beginning of each doc comment line: indent
90| |// whitespace, if any, doc comment prefix (`//!` in this case) and (I assume) one space character
91| |// (?). Note, when viewing `llvm-cov show` results in `--color` mode, the column offset errors are
92| |// more pronounced, and show up in more places, with background color used to show some distinct
93| |// code regions with different coverage counts.
94| |//
95| |// NOTE: Since the doc comment line prefix may vary, one possible solution is to replace each
96| |// character stripped from the beginning of doc comment lines with a space. This will give coverage
97| |// results the correct column offsets, and I think it should compile correctly, but I don't know
98| |// what affect it might have on diagnostic messages from the compiler, and whether anyone would care
99| |// if the indentation changed. I don't know if there is a more viable solution.
LL| 1|//! res = Ok(0);
LL| |//! }
LL| |//! // need to be explicit because rustdoc cant infer the return type
LL| 1|//! Ok::<(), SomeError>(())
LL| 1|//! ```
LL| |//!
LL| |//! doctest with custom main:
LL| |//! ```
LL| 1|//! fn some_func() {
LL| 1|//! println!("called some_func()");
LL| 1|//! }
LL| |//!
LL| 0|//! #[derive(Debug)]
LL| |//! struct SomeError;
LL| |//!
LL| |//! extern crate doctest_crate;
LL| |//!
LL| 1|//! fn doctest_main() -> Result<(), SomeError> {
LL| 1|//! some_func();
LL| 1|//! doctest_crate::fn_run_in_doctests(2);
LL| 1|//! Ok(())
LL| 1|//! }
LL| |//!
LL| |//! // this `main` is not shown as covered, as it clashes with all the other
LL| |//! // `main` functions that were automatically generated for doctests
LL| |//! fn main() -> Result<(), SomeError> {
LL| |//! doctest_main()
LL| |//! }
LL| |//! ```
LL| |// aux-build:doctest_crate.rs
LL| |/// doctest attached to fn testing external code:
LL| |/// ```
LL| 1|/// extern crate doctest_crate;
LL| 1|/// doctest_crate::fn_run_in_doctests(3);
LL| 1|/// ```
LL| |///
LL| 1|fn main() {
LL| 1| if true {
LL| 1| assert_eq!(1, 1);
LL| | } else {
LL| 0| assert_eq!(1, 2);
LL| | }
LL| 1|}
LL| |
LL| |// FIXME(Swatinem): Fix known issue that coverage code region columns need to be offset by the
LL| |// doc comment line prefix (`///` or `//!`) and any additional indent (before or after the doc
LL| |// comment characters). This test produces `llvm-cov show` results demonstrating the problem.
LL| |//
LL| |// One of the above tests now includes: `derive(Debug, PartialEq)`, producing an `llvm-cov show`
LL| |// result with a distinct count for `Debug`, denoted by `^1`, but the caret points to the wrong
LL| |// column. Similarly, the `if` blocks without `else` blocks show `^0`, which should point at, or
LL| |// one character past, the `if` block's closing brace. In both cases, these are most likely off
LL| |// by the number of characters stripped from the beginning of each doc comment line: indent
LL| |// whitespace, if any, doc comment prefix (`//!` in this case) and (I assume) one space character
LL| |// (?). Note, when viewing `llvm-cov show` results in `--color` mode, the column offset errors are
LL| |// more pronounced, and show up in more places, with background color used to show some distinct
LL| |// code regions with different coverage counts.
LL| |//
LL| |// NOTE: Since the doc comment line prefix may vary, one possible solution is to replace each
LL| |// character stripped from the beginning of doc comment lines with a space. This will give coverage
LL| |// results the correct column offsets, and I think it should compile correctly, but I don't know
LL| |// what affect it might have on diagnostic messages from the compiler, and whether anyone would care
LL| |// if the indentation changed. I don't know if there is a more viable solution.

132
tests/run-coverage/abort.coverage
View File

@ -1,69 +1,69 @@
1| |#![feature(c_unwind)]
2| |#![allow(unused_assignments)]
3| |
4| 12|extern "C" fn might_abort(should_abort: bool) {
5| 12| if should_abort {
6| 0| println!("aborting...");
7| 0| panic!("panics and aborts");
8| 12| } else {
9| 12| println!("Don't Panic");
10| 12| }
11| 12|}
12| |
13| 1|fn main() -> Result<(), u8> {
14| 1| let mut countdown = 10;
15| 11| while countdown > 0 {
16| 10| if countdown < 5 {
17| 4| might_abort(false);
18| 6| }
19| | // See discussion (below the `Notes` section) on coverage results for the closing brace.
20| 10| if countdown < 5 { might_abort(false); } // Counts for different regions on one line.
LL| |#![feature(c_unwind)]
LL| |#![allow(unused_assignments)]
LL| |
LL| 12|extern "C" fn might_abort(should_abort: bool) {
LL| 12| if should_abort {
LL| 0| println!("aborting...");
LL| 0| panic!("panics and aborts");
LL| 12| } else {
LL| 12| println!("Don't Panic");
LL| 12| }
LL| 12|}
LL| |
LL| 1|fn main() -> Result<(), u8> {
LL| 1| let mut countdown = 10;
LL| 11| while countdown > 0 {
LL| 10| if countdown < 5 {
LL| 4| might_abort(false);
LL| 6| }
LL| | // See discussion (below the `Notes` section) on coverage results for the closing brace.
LL| 10| if countdown < 5 { might_abort(false); } // Counts for different regions on one line.
^4 ^6
21| | // For the following example, the closing brace is the last character on the line.
22| | // This shows the character after the closing brace is highlighted, even if that next
23| | // character is a newline.
24| 10| if countdown < 5 { might_abort(false); }
LL| | // For the following example, the closing brace is the last character on the line.
LL| | // This shows the character after the closing brace is highlighted, even if that next
LL| | // character is a newline.
LL| 10| if countdown < 5 { might_abort(false); }
^4 ^6
25| 10| countdown -= 1;
26| | }
27| 1| Ok(())
28| 1|}
29| |
30| |// Notes:
31| |// 1. Compare this program and its coverage results to those of the similar tests
32| |// `panic_unwind.rs` and `try_error_result.rs`.
33| |// 2. This test confirms the coverage generated when a program includes `UnwindAction::Terminate`.
34| |// 3. The test does not invoke the abort. By executing to a successful completion, the coverage
35| |// results show where the program did and did not execute.
36| |// 4. If the program actually aborted, the coverage counters would not be saved (which "works as
37| |// intended"). Coverage results would show no executed coverage regions.
38| |// 6. If `should_abort` is `true` and the program aborts, the program exits with a `132` status
39| |// (on Linux at least).
40| |
41| |/*
42| |
43| |Expect the following coverage results:
44| |
45| |```text
46| | 16| 11| while countdown > 0 {
47| | 17| 10| if countdown < 5 {
48| | 18| 4| might_abort(false);
49| | 19| 6| }
50| |```
51| |
52| |This is actually correct.
53| |
54| |The condition `countdown < 5` executed 10 times (10 loop iterations).
55| |
56| |It evaluated to `true` 4 times, and executed the `might_abort()` call.
57| |
58| |It skipped the body of the `might_abort()` call 6 times. If an `if` does not include an explicit
59| |`else`, the coverage implementation injects a counter, at the character immediately after the `if`s
60| |closing brace, to count the "implicit" `else`. This is the only way to capture the coverage of the
61| |non-true condition.
62| |
63| |As another example of why this is important, say the condition was `countdown < 50`, which is always
64| |`true`. In that case, we wouldn't have a test for what happens if `might_abort()` is not called.
65| |The closing brace would have a count of `0`, highlighting the missed coverage.
66| |*/
LL| 10| countdown -= 1;
LL| | }
LL| 1| Ok(())
LL| 1|}
LL| |
LL| |// Notes:
LL| |// 1. Compare this program and its coverage results to those of the similar tests
LL| |// `panic_unwind.rs` and `try_error_result.rs`.
LL| |// 2. This test confirms the coverage generated when a program includes `UnwindAction::Terminate`.
LL| |// 3. The test does not invoke the abort. By executing to a successful completion, the coverage
LL| |// results show where the program did and did not execute.
LL| |// 4. If the program actually aborted, the coverage counters would not be saved (which "works as
LL| |// intended"). Coverage results would show no executed coverage regions.
LL| |// 6. If `should_abort` is `true` and the program aborts, the program exits with a `132` status
LL| |// (on Linux at least).
LL| |
LL| |/*
LL| |
LL| |Expect the following coverage results:
LL| |
LL| |```text
LL| | 16| 11| while countdown > 0 {
LL| | 17| 10| if countdown < 5 {
LL| | 18| 4| might_abort(false);
LL| | 19| 6| }
LL| |```
LL| |
LL| |This is actually correct.
LL| |
LL| |The condition `countdown < 5` executed 10 times (10 loop iterations).
LL| |
LL| |It evaluated to `true` 4 times, and executed the `might_abort()` call.
LL| |
LL| |It skipped the body of the `might_abort()` call 6 times. If an `if` does not include an explicit
LL| |`else`, the coverage implementation injects a counter, at the character immediately after the `if`s
LL| |closing brace, to count the "implicit" `else`. This is the only way to capture the coverage of the
LL| |non-true condition.
LL| |
LL| |As another example of why this is important, say the condition was `countdown < 50`, which is always
LL| |`true`. In that case, we wouldn't have a test for what happens if `might_abort()` is not called.
LL| |The closing brace would have a count of `0`, highlighting the missed coverage.
LL| |*/

64
tests/run-coverage/assert.coverage
View File

@ -1,34 +1,34 @@
1| |#![allow(unused_assignments)]
2| |// failure-status: 101
3| |
4| 4|fn might_fail_assert(one_plus_one: u32) {
5| 4| println!("does 1 + 1 = {}?", one_plus_one);
6| 4| assert_eq!(1 + 1, one_plus_one, "the argument was wrong");
LL| |#![allow(unused_assignments)]
LL| |// failure-status: 101
LL| |
LL| 4|fn might_fail_assert(one_plus_one: u32) {
LL| 4| println!("does 1 + 1 = {}?", one_plus_one);
LL| 4| assert_eq!(1 + 1, one_plus_one, "the argument was wrong");
^1
7| 3|}
8| |
9| 1|fn main() -> Result<(),u8> {
10| 1| let mut countdown = 10;
11| 11| while countdown > 0 {
12| 11| if countdown == 1 {
13| 1| might_fail_assert(3);
14| 10| } else if countdown < 5 {
15| 3| might_fail_assert(2);
16| 6| }
17| 10| countdown -= 1;
18| | }
19| 0| Ok(())
20| 0|}
21| |
22| |// Notes:
23| |// 1. Compare this program and its coverage results to those of the very similar test
24| |// `panic_unwind.rs`, and similar tests `abort.rs` and `try_error_result.rs`.
25| |// 2. This test confirms the coverage generated when a program passes or fails an `assert!()` or
26| |// related `assert_*!()` macro.
27| |// 3. Notably, the `assert` macros *do not* generate `TerminatorKind::Assert`. The macros produce
28| |// conditional expressions, `TerminatorKind::SwitchInt` branches, and a possible call to
29| |// `begin_panic_fmt()` (that begins a panic unwind, if the assertion test fails).
30| |// 4. `TerminatoKind::Assert` is, however, also present in the MIR generated for this test
31| |// (and in many other coverage tests). The `Assert` terminator is typically generated by the
32| |// Rust compiler to check for runtime failures, such as numeric overflows.
LL| 3|}
LL| |
LL| 1|fn main() -> Result<(),u8> {
LL| 1| let mut countdown = 10;
LL| 11| while countdown > 0 {
LL| 11| if countdown == 1 {
LL| 1| might_fail_assert(3);
LL| 10| } else if countdown < 5 {
LL| 3| might_fail_assert(2);
LL| 6| }
LL| 10| countdown -= 1;
LL| | }
LL| 0| Ok(())
LL| 0|}
LL| |
LL| |// Notes:
LL| |// 1. Compare this program and its coverage results to those of the very similar test
LL| |// `panic_unwind.rs`, and similar tests `abort.rs` and `try_error_result.rs`.
LL| |// 2. This test confirms the coverage generated when a program passes or fails an `assert!()` or
LL| |// related `assert_*!()` macro.
LL| |// 3. Notably, the `assert` macros *do not* generate `TerminatorKind::Assert`. The macros produce
LL| |// conditional expressions, `TerminatorKind::SwitchInt` branches, and a possible call to
LL| |// `begin_panic_fmt()` (that begins a panic unwind, if the assertion test fails).
LL| |// 4. `TerminatoKind::Assert` is, however, also present in the MIR generated for this test
LL| |// (and in many other coverage tests). The `Assert` terminator is typically generated by the
LL| |// Rust compiler to check for runtime failures, such as numeric overflows.

256
tests/run-coverage/async.coverage
View File

@ -1,139 +1,139 @@
1| |#![allow(unused_assignments, dead_code)]
2| |
3| |// compile-flags: --edition=2018 -C opt-level=1
4| |
5| 1|async fn c(x: u8) -> u8 {
6| 1| if x == 8 {
7| 1| 1
8| | } else {
9| 0| 0
10| | }
11| 1|}
12| |
13| 0|async fn d() -> u8 { 1 }
14| |
15| 0|async fn e() -> u8 { 1 } // unused function; executor does not block on `g()`
16| |
17| 1|async fn f() -> u8 { 1 }
18| |
19| 0|async fn foo() -> [bool; 10] { [false; 10] } // unused function; executor does not block on `h()`
20| |
21| 1|pub async fn g(x: u8) {
22| 0| match x {
23| 0| y if e().await == y => (),
24| 0| y if f().await == y => (),
25| 0| _ => (),
26| | }
27| 0|}
28| |
29| 1|async fn h(x: usize) { // The function signature is counted when called, but the body is not
30| 0| // executed (not awaited) so the open brace has a `0` count (at least when
31| 0| // displayed with `llvm-cov show` in color-mode).
32| 0| match x {
33| 0| y if foo().await[y] => (),
34| 0| _ => (),
35| | }
36| 0|}
37| |
38| 1|async fn i(x: u8) { // line coverage is 1, but there are 2 regions:
39| 1| // (a) the function signature, counted when the function is called; and
40| 1| // (b) the open brace for the function body, counted once when the body is
41| 1| // executed asynchronously.
42| 1| match x {
43| 1| y if c(x).await == y + 1 => { d().await; }
LL| |#![allow(unused_assignments, dead_code)]
LL| |
LL| |// compile-flags: --edition=2018 -C opt-level=1
LL| |
LL| 1|async fn c(x: u8) -> u8 {
LL| 1| if x == 8 {
LL| 1| 1
LL| | } else {
LL| 0| 0
LL| | }
LL| 1|}
LL| |
LL| 0|async fn d() -> u8 { 1 }
LL| |
LL| 0|async fn e() -> u8 { 1 } // unused function; executor does not block on `g()`
LL| |
LL| 1|async fn f() -> u8 { 1 }
LL| |
LL| 0|async fn foo() -> [bool; 10] { [false; 10] } // unused function; executor does not block on `h()`
LL| |
LL| 1|pub async fn g(x: u8) {
LL| 0| match x {
LL| 0| y if e().await == y => (),
LL| 0| y if f().await == y => (),
LL| 0| _ => (),
LL| | }
LL| 0|}
LL| |
LL| 1|async fn h(x: usize) { // The function signature is counted when called, but the body is not
LL| 0| // executed (not awaited) so the open brace has a `0` count (at least when
LL| 0| // displayed with `llvm-cov show` in color-mode).
LL| 0| match x {
LL| 0| y if foo().await[y] => (),
LL| 0| _ => (),
LL| | }
LL| 0|}
LL| |
LL| 1|async fn i(x: u8) { // line coverage is 1, but there are 2 regions:
LL| 1| // (a) the function signature, counted when the function is called; and
LL| 1| // (b) the open brace for the function body, counted once when the body is
LL| 1| // executed asynchronously.
LL| 1| match x {
LL| 1| y if c(x).await == y + 1 => { d().await; }
^0 ^0 ^0 ^0
44| 1| y if f().await == y + 1 => (),
LL| 1| y if f().await == y + 1 => (),
^0 ^0 ^0
45| 1| _ => (),
46| | }
47| 1|}
48| |
49| 1|fn j(x: u8) {
50| 1| // non-async versions of `c()`, `d()`, and `f()` to make it similar to async `i()`.
51| 1| fn c(x: u8) -> u8 {
52| 1| if x == 8 {
53| 1| 1 // This line appears covered, but the 1-character expression span covering the `1`
LL| 1| _ => (),
LL| | }
LL| 1|}
LL| |
LL| 1|fn j(x: u8) {
LL| 1| // non-async versions of `c()`, `d()`, and `f()` to make it similar to async `i()`.
LL| 1| fn c(x: u8) -> u8 {
LL| 1| if x == 8 {
LL| 1| 1 // This line appears covered, but the 1-character expression span covering the `1`
^0
54| 1| // is not executed. (`llvm-cov show` displays a `^0` below the `1` ). This is because
55| 1| // `fn j()` executes the open brace for the function body, followed by the function's
56| 1| // first executable statement, `match x`. Inner function declarations are not
57| 1| // "visible" to the MIR for `j()`, so the code region counts all lines between the
58| 1| // open brace and the first statement as executed, which is, in a sense, true.
59| 1| // `llvm-cov show` overcomes this kind of situation by showing the actual counts
60| 1| // of the enclosed coverages, (that is, the `1` expression was not executed, and
61| 1| // accurately displays a `0`).
62| 1| } else {
63| 1| 0
64| 1| }
65| 1| }
66| 1| fn d() -> u8 { 1 } // inner function is defined in-line, but the function is not executed
LL| 1| // is not executed. (`llvm-cov show` displays a `^0` below the `1` ). This is because
LL| 1| // `fn j()` executes the open brace for the function body, followed by the function's
LL| 1| // first executable statement, `match x`. Inner function declarations are not
LL| 1| // "visible" to the MIR for `j()`, so the code region counts all lines between the
LL| 1| // open brace and the first statement as executed, which is, in a sense, true.
LL| 1| // `llvm-cov show` overcomes this kind of situation by showing the actual counts
LL| 1| // of the enclosed coverages, (that is, the `1` expression was not executed, and
LL| 1| // accurately displays a `0`).
LL| 1| } else {
LL| 1| 0
LL| 1| }
LL| 1| }
LL| 1| fn d() -> u8 { 1 } // inner function is defined in-line, but the function is not executed
^0
67| 1| fn f() -> u8 { 1 }
68| 1| match x {
69| 1| y if c(x) == y + 1 => { d(); }
LL| 1| fn f() -> u8 { 1 }
LL| 1| match x {
LL| 1| y if c(x) == y + 1 => { d(); }
^0 ^0
70| 1| y if f() == y + 1 => (),
LL| 1| y if f() == y + 1 => (),
^0 ^0
71| 1| _ => (),
72| | }
73| 1|}
74| |
75| 0|fn k(x: u8) { // unused function
76| 0| match x {
77| 0| 1 => (),
78| 0| 2 => (),
79| 0| _ => (),
80| | }
81| 0|}
82| |
83| 1|fn l(x: u8) {
84| 1| match x {
85| 0| 1 => (),
86| 0| 2 => (),
87| 1| _ => (),
88| | }
89| 1|}
90| |
91| 1|async fn m(x: u8) -> u8 { x - 1 }
LL| 1| _ => (),
LL| | }
LL| 1|}
LL| |
LL| 0|fn k(x: u8) { // unused function
LL| 0| match x {
LL| 0| 1 => (),
LL| 0| 2 => (),
LL| 0| _ => (),
LL| | }
LL| 0|}
LL| |
LL| 1|fn l(x: u8) {
LL| 1| match x {
LL| 0| 1 => (),
LL| 0| 2 => (),
LL| 1| _ => (),
LL| | }
LL| 1|}
LL| |
LL| 1|async fn m(x: u8) -> u8 { x - 1 }
^0
92| |
93| 1|fn main() {
94| 1| let _ = g(10);
95| 1| let _ = h(9);
96| 1| let mut future = Box::pin(i(8));
97| 1| j(7);
98| 1| l(6);
99| 1| let _ = m(5);
100| 1| executor::block_on(future.as_mut());
101| 1|}
102| |
103| |mod executor {
104| | use core::{
105| | future::Future,
106| | pin::Pin,
107| | task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
108| | };
109| |
110| 1| pub fn block_on<F: Future>(mut future: F) -> F::Output {
111| 1| let mut future = unsafe { Pin::new_unchecked(&mut future) };
112| 1| use std::hint::unreachable_unchecked;
113| 1| static VTABLE: RawWakerVTable = RawWakerVTable::new(
114| 1| |_| unsafe { unreachable_unchecked() }, // clone
LL| |
LL| 1|fn main() {
LL| 1| let _ = g(10);
LL| 1| let _ = h(9);
LL| 1| let mut future = Box::pin(i(8));
LL| 1| j(7);
LL| 1| l(6);
LL| 1| let _ = m(5);
LL| 1| executor::block_on(future.as_mut());
LL| 1|}
LL| |
LL| |mod executor {
LL| | use core::{
LL| | future::Future,
LL| | pin::Pin,
LL| | task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
LL| | };
LL| |
LL| 1| pub fn block_on<F: Future>(mut future: F) -> F::Output {
LL| 1| let mut future = unsafe { Pin::new_unchecked(&mut future) };
LL| 1| use std::hint::unreachable_unchecked;
LL| 1| static VTABLE: RawWakerVTable = RawWakerVTable::new(
LL| 1| |_| unsafe { unreachable_unchecked() }, // clone
^0
115| 1| |_| unsafe { unreachable_unchecked() }, // wake
LL| 1| |_| unsafe { unreachable_unchecked() }, // wake
^0
116| 1| |_| unsafe { unreachable_unchecked() }, // wake_by_ref
LL| 1| |_| unsafe { unreachable_unchecked() }, // wake_by_ref
^0
117| 1| |_| (),
118| 1| );
119| 1| let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
120| 1| let mut context = Context::from_waker(&waker);
121| |
122| | loop {
123| 1| if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
124| 1| break val;
125| 0| }
126| | }
127| 1| }
128| |}
LL| 1| |_| (),
LL| 1| );
LL| 1| let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
LL| 1| let mut context = Context::from_waker(&waker);
LL| |
LL| | loop {
LL| 1| if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
LL| 1| break val;
LL| 0| }
LL| | }
LL| 1| }
LL| |}

210
tests/run-coverage/async2.coverage
View File

@ -1,116 +1,116 @@
1| |// compile-flags: --edition=2018
2| |
3| |use core::{
4| | future::Future,
5| | marker::Send,
6| | pin::Pin,
7| |};
8| |
9| 1|fn non_async_func() {
10| 1| println!("non_async_func was covered");
11| 1| let b = true;
12| 1| if b {
13| 1| println!("non_async_func println in block");
14| 1| }
LL| |// compile-flags: --edition=2018
LL| |
LL| |use core::{
LL| | future::Future,
LL| | marker::Send,
LL| | pin::Pin,
LL| |};
LL| |
LL| 1|fn non_async_func() {
LL| 1| println!("non_async_func was covered");
LL| 1| let b = true;
LL| 1| if b {
LL| 1| println!("non_async_func println in block");
LL| 1| }
^0
15| 1|}
16| |
17| |
18| |
19| |
20| 1|async fn async_func() {
21| 1| println!("async_func was covered");
22| 1| let b = true;
23| 1| if b {
24| 1| println!("async_func println in block");
25| 1| }
LL| 1|}
LL| |
LL| |
LL| |
LL| |
LL| 1|async fn async_func() {
LL| 1| println!("async_func was covered");
LL| 1| let b = true;
LL| 1| if b {
LL| 1| println!("async_func println in block");
LL| 1| }
^0
26| 1|}
27| |
28| |
29| |
30| |
31| 1|async fn async_func_just_println() {
32| 1| println!("async_func_just_println was covered");
33| 1|}
34| |
35| 1|fn main() {
36| 1| println!("codecovsample::main");
37| 1|
38| 1| non_async_func();
39| 1|
40| 1| executor::block_on(async_func());
41| 1| executor::block_on(async_func_just_println());
42| 1|}
43| |
44| |mod executor {
45| | use core::{
46| | future::Future,
47| | pin::Pin,
48| | task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
49| | };
50| |
51| 2| pub fn block_on<F: Future>(mut future: F) -> F::Output {
52| 2| let mut future = unsafe { Pin::new_unchecked(&mut future) };
53| 2| use std::hint::unreachable_unchecked;
54| 2| static VTABLE: RawWakerVTable = RawWakerVTable::new(
55| 2| |_| unsafe { unreachable_unchecked() }, // clone
LL| 1|}
LL| |
LL| |
LL| |
LL| |
LL| 1|async fn async_func_just_println() {
LL| 1| println!("async_func_just_println was covered");
LL| 1|}
LL| |
LL| 1|fn main() {
LL| 1| println!("codecovsample::main");
LL| 1|
LL| 1| non_async_func();
LL| 1|
LL| 1| executor::block_on(async_func());
LL| 1| executor::block_on(async_func_just_println());
LL| 1|}
LL| |
LL| |mod executor {
LL| | use core::{
LL| | future::Future,
LL| | pin::Pin,
LL| | task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
LL| | };
LL| |
LL| 2| pub fn block_on<F: Future>(mut future: F) -> F::Output {
LL| 2| let mut future = unsafe { Pin::new_unchecked(&mut future) };
LL| 2| use std::hint::unreachable_unchecked;
LL| 2| static VTABLE: RawWakerVTable = RawWakerVTable::new(
LL| 2| |_| unsafe { unreachable_unchecked() }, // clone
^0
56| 2| |_| unsafe { unreachable_unchecked() }, // wake
LL| 2| |_| unsafe { unreachable_unchecked() }, // wake
^0
57| 2| |_| unsafe { unreachable_unchecked() }, // wake_by_ref
LL| 2| |_| unsafe { unreachable_unchecked() }, // wake_by_ref
^0
58| 2| |_| (),
59| 2| );
60| 2| let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
61| 2| let mut context = Context::from_waker(&waker);
62| |
63| | loop {
64| 2| if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
65| 2| break val;
66| 0| }
67| | }
68| 2| }
LL| 2| |_| (),
LL| 2| );
LL| 2| let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
LL| 2| let mut context = Context::from_waker(&waker);
LL| |
LL| | loop {
LL| 2| if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
LL| 2| break val;
LL| 0| }
LL| | }
LL| 2| }
------------------
| async2::executor::block_on::<async2::async_func::{closure#0}>:
| 51| 1| pub fn block_on<F: Future>(mut future: F) -> F::Output {
| 52| 1| let mut future = unsafe { Pin::new_unchecked(&mut future) };
| 53| 1| use std::hint::unreachable_unchecked;
| 54| 1| static VTABLE: RawWakerVTable = RawWakerVTable::new(
| 55| 1| |_| unsafe { unreachable_unchecked() }, // clone
| 56| 1| |_| unsafe { unreachable_unchecked() }, // wake
| 57| 1| |_| unsafe { unreachable_unchecked() }, // wake_by_ref
| 58| 1| |_| (),
| 59| 1| );
| 60| 1| let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
| 61| 1| let mut context = Context::from_waker(&waker);
| 62| |
| 63| | loop {
| 64| 1| if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
| 65| 1| break val;
| 66| 0| }
| 67| | }
| 68| 1| }
| LL| 1| pub fn block_on<F: Future>(mut future: F) -> F::Output {
| LL| 1| let mut future = unsafe { Pin::new_unchecked(&mut future) };
| LL| 1| use std::hint::unreachable_unchecked;
| LL| 1| static VTABLE: RawWakerVTable = RawWakerVTable::new(
| LL| 1| |_| unsafe { unreachable_unchecked() }, // clone
| LL| 1| |_| unsafe { unreachable_unchecked() }, // wake
| LL| 1| |_| unsafe { unreachable_unchecked() }, // wake_by_ref
| LL| 1| |_| (),
| LL| 1| );
| LL| 1| let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
| LL| 1| let mut context = Context::from_waker(&waker);
| LL| |
| LL| | loop {
| LL| 1| if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
| LL| 1| break val;
| LL| 0| }
| LL| | }
| LL| 1| }
------------------
| async2::executor::block_on::<async2::async_func_just_println::{closure#0}>:
| 51| 1| pub fn block_on<F: Future>(mut future: F) -> F::Output {
| 52| 1| let mut future = unsafe { Pin::new_unchecked(&mut future) };
| 53| 1| use std::hint::unreachable_unchecked;
| 54| 1| static VTABLE: RawWakerVTable = RawWakerVTable::new(
| 55| 1| |_| unsafe { unreachable_unchecked() }, // clone
| 56| 1| |_| unsafe { unreachable_unchecked() }, // wake
| 57| 1| |_| unsafe { unreachable_unchecked() }, // wake_by_ref
| 58| 1| |_| (),
| 59| 1| );
| 60| 1| let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
| 61| 1| let mut context = Context::from_waker(&waker);
| 62| |
| 63| | loop {
| 64| 1| if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
| 65| 1| break val;
| 66| 0| }
| 67| | }
| 68| 1| }
| LL| 1| pub fn block_on<F: Future>(mut future: F) -> F::Output {
| LL| 1| let mut future = unsafe { Pin::new_unchecked(&mut future) };
| LL| 1| use std::hint::unreachable_unchecked;
| LL| 1| static VTABLE: RawWakerVTable = RawWakerVTable::new(
| LL| 1| |_| unsafe { unreachable_unchecked() }, // clone
| LL| 1| |_| unsafe { unreachable_unchecked() }, // wake
| LL| 1| |_| unsafe { unreachable_unchecked() }, // wake_by_ref
| LL| 1| |_| (),
| LL| 1| );
| LL| 1| let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
| LL| 1| let mut context = Context::from_waker(&waker);
| LL| |
| LL| | loop {
| LL| 1| if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
| LL| 1| break val;
| LL| 0| }
| LL| | }
| LL| 1| }
------------------
69| |}
LL| |}

430
tests/run-coverage/closure.coverage
View File

@ -1,222 +1,222 @@
1| |#![allow(unused_assignments, unused_variables)]
2| |// compile-flags: -C opt-level=2
3| 1|fn main() { // ^^ fix described in rustc_middle/mir/mono.rs
4| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
5| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
6| 1| // dependent conditions.
7| 1| let is_true = std::env::args().len() == 1;
8| 1| let is_false = ! is_true;
9| 1|
10| 1| let mut some_string = Some(String::from("the string content"));
11| 1| println!(
12| 1| "The string or alt: {}"
13| 1| ,
14| 1| some_string
15| 1| .
16| 1| unwrap_or_else
17| 1| (
18| 1| ||
19| 0| {
20| 0| let mut countdown = 0;
21| 0| if is_false {
22| 0| countdown = 10;
23| 0| }
24| 0| "alt string 1".to_owned()
25| 1| }
26| 1| )
27| 1| );
28| 1|
29| 1| some_string = Some(String::from("the string content"));
30| 1| let
31| 1| a
32| | =
33| | ||
34| 0| {
35| 0| let mut countdown = 0;
36| 0| if is_false {
37| 0| countdown = 10;
38| 0| }
39| 0| "alt string 2".to_owned()
40| 0| };
41| 1| println!(
42| 1| "The string or alt: {}"
43| 1| ,
44| 1| some_string
45| 1| .
46| 1| unwrap_or_else
47| 1| (
48| 1| a
49| 1| )
50| 1| );
51| 1|
52| 1| some_string = None;
53| 1| println!(
54| 1| "The string or alt: {}"
55| 1| ,
56| 1| some_string
57| 1| .
58| 1| unwrap_or_else
59| 1| (
60| 1| ||
61| 1| {
62| 1| let mut countdown = 0;
63| 1| if is_false {
64| 0| countdown = 10;
65| 1| }
66| 1| "alt string 3".to_owned()
67| 1| }
68| 1| )
69| 1| );
70| 1|
71| 1| some_string = None;
72| 1| let
73| 1| a
74| 1| =
75| 1| ||
76| 1| {
77| 1| let mut countdown = 0;
78| 1| if is_false {
79| 0| countdown = 10;
80| 1| }
81| 1| "alt string 4".to_owned()
82| 1| };
83| 1| println!(
84| 1| "The string or alt: {}"
85| 1| ,
86| 1| some_string
87| 1| .
88| 1| unwrap_or_else
89| 1| (
90| 1| a
91| 1| )
92| 1| );
93| 1|
94| 1| let
95| 1| quote_closure
96| 1| =
97| 1| |val|
98| 5| {
99| 5| let mut countdown = 0;
100| 5| if is_false {
101| 0| countdown = 10;
102| 5| }
103| 5| format!("'{}'", val)
104| 5| };
105| 1| println!(
106| 1| "Repeated, quoted string: {:?}"
107| 1| ,
108| 1| std::iter::repeat("repeat me")
109| 1| .take(5)
110| 1| .map
111| 1| (
112| 1| quote_closure
113| 1| )
114| 1| .collect::<Vec<_>>()
115| 1| );
116| 1|
117| 1| let
118| 1| _unused_closure
119| | =
120| | |
121| | mut countdown
122| | |
123| 0| {
124| 0| if is_false {
125| 0| countdown = 10;
126| 0| }
127| 0| "closure should be unused".to_owned()
128| 0| };
129| |
130| 1| let mut countdown = 10;
131| 1| let _short_unused_closure = | _unused_arg: u8 | countdown += 1;
LL| |#![allow(unused_assignments, unused_variables)]
LL| |// compile-flags: -C opt-level=2
LL| 1|fn main() { // ^^ fix described in rustc_middle/mir/mono.rs
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1| let is_false = ! is_true;
LL| 1|
LL| 1| let mut some_string = Some(String::from("the string content"));
LL| 1| println!(
LL| 1| "The string or alt: {}"
LL| 1| ,
LL| 1| some_string
LL| 1| .
LL| 1| unwrap_or_else
LL| 1| (
LL| 1| ||
LL| 0| {
LL| 0| let mut countdown = 0;
LL| 0| if is_false {
LL| 0| countdown = 10;
LL| 0| }
LL| 0| "alt string 1".to_owned()
LL| 1| }
LL| 1| )
LL| 1| );
LL| 1|
LL| 1| some_string = Some(String::from("the string content"));
LL| 1| let
LL| 1| a
LL| | =
LL| | ||
LL| 0| {
LL| 0| let mut countdown = 0;
LL| 0| if is_false {
LL| 0| countdown = 10;
LL| 0| }
LL| 0| "alt string 2".to_owned()
LL| 0| };
LL| 1| println!(
LL| 1| "The string or alt: {}"
LL| 1| ,
LL| 1| some_string
LL| 1| .
LL| 1| unwrap_or_else
LL| 1| (
LL| 1| a
LL| 1| )
LL| 1| );
LL| 1|
LL| 1| some_string = None;
LL| 1| println!(
LL| 1| "The string or alt: {}"
LL| 1| ,
LL| 1| some_string
LL| 1| .
LL| 1| unwrap_or_else
LL| 1| (
LL| 1| ||
LL| 1| {
LL| 1| let mut countdown = 0;
LL| 1| if is_false {
LL| 0| countdown = 10;
LL| 1| }
LL| 1| "alt string 3".to_owned()
LL| 1| }
LL| 1| )
LL| 1| );
LL| 1|
LL| 1| some_string = None;
LL| 1| let
LL| 1| a
LL| 1| =
LL| 1| ||
LL| 1| {
LL| 1| let mut countdown = 0;
LL| 1| if is_false {
LL| 0| countdown = 10;
LL| 1| }
LL| 1| "alt string 4".to_owned()
LL| 1| };
LL| 1| println!(
LL| 1| "The string or alt: {}"
LL| 1| ,
LL| 1| some_string
LL| 1| .
LL| 1| unwrap_or_else
LL| 1| (
LL| 1| a
LL| 1| )
LL| 1| );
LL| 1|
LL| 1| let
LL| 1| quote_closure
LL| 1| =
LL| 1| |val|
LL| 5| {
LL| 5| let mut countdown = 0;
LL| 5| if is_false {
LL| 0| countdown = 10;
LL| 5| }
LL| 5| format!("'{}'", val)
LL| 5| };
LL| 1| println!(
LL| 1| "Repeated, quoted string: {:?}"
LL| 1| ,
LL| 1| std::iter::repeat("repeat me")
LL| 1| .take(5)
LL| 1| .map
LL| 1| (
LL| 1| quote_closure
LL| 1| )
LL| 1| .collect::<Vec<_>>()
LL| 1| );
LL| 1|
LL| 1| let
LL| 1| _unused_closure
LL| | =
LL| | |
LL| | mut countdown
LL| | |
LL| 0| {
LL| 0| if is_false {
LL| 0| countdown = 10;
LL| 0| }
LL| 0| "closure should be unused".to_owned()
LL| 0| };
LL| |
LL| 1| let mut countdown = 10;
LL| 1| let _short_unused_closure = | _unused_arg: u8 | countdown += 1;
^0
132| |
133| |
134| 1| let short_used_covered_closure_macro = | used_arg: u8 | println!("called");
135| 1| let short_used_not_covered_closure_macro = | used_arg: u8 | println!("not called");
LL| |
LL| |
LL| 1| let short_used_covered_closure_macro = | used_arg: u8 | println!("called");
LL| 1| let short_used_not_covered_closure_macro = | used_arg: u8 | println!("not called");
^0
136| 1| let _short_unused_closure_macro = | _unused_arg: u8 | println!("not called");
LL| 1| let _short_unused_closure_macro = | _unused_arg: u8 | println!("not called");
^0
137| |
138| |
139| |
140| |
141| 1| let _short_unused_closure_block = | _unused_arg: u8 | { println!("not called") };
LL| |
LL| |
LL| |
LL| |
LL| 1| let _short_unused_closure_block = | _unused_arg: u8 | { println!("not called") };
^0
142| |
143| 1| let _shortish_unused_closure = | _unused_arg: u8 | {
144| 0| println!("not called")
145| 0| };
146| |
147| 1| let _as_short_unused_closure = |
148| | _unused_arg: u8
149| 0| | { println!("not called") };
150| |
151| 1| let _almost_as_short_unused_closure = |
152| | _unused_arg: u8
153| 0| | { println!("not called") }
154| | ;
155| |
156| |
157| |
158| |
159| |
160| 1| let _short_unused_closure_line_break_no_block = | _unused_arg: u8 |
161| 0|println!("not called")
162| | ;
163| |
164| 1| let _short_unused_closure_line_break_no_block2 =
165| | | _unused_arg: u8 |
166| 0| println!(
167| 0| "not called"
168| 0| )
169| | ;
170| |
171| 1| let short_used_not_covered_closure_line_break_no_block_embedded_branch =
172| | | _unused_arg: u8 |
173| 0| println!(
174| 0| "not called: {}",
175| 0| if is_true { "check" } else { "me" }
176| 0| )
177| | ;
178| |
179| 1| let short_used_not_covered_closure_line_break_block_embedded_branch =
180| 1| | _unused_arg: u8 |
181| 0| {
182| 0| println!(
183| 0| "not called: {}",
184| 0| if is_true { "check" } else { "me" }
185| | )
186| 0| }
187| | ;
188| |
189| 1| let short_used_covered_closure_line_break_no_block_embedded_branch =
190| 1| | _unused_arg: u8 |
191| 1| println!(
192| 1| "not called: {}",
193| 1| if is_true { "check" } else { "me" }
LL| |
LL| 1| let _shortish_unused_closure = | _unused_arg: u8 | {
LL| 0| println!("not called")
LL| 0| };
LL| |
LL| 1| let _as_short_unused_closure = |
LL| | _unused_arg: u8
LL| 0| | { println!("not called") };
LL| |
LL| 1| let _almost_as_short_unused_closure = |
LL| | _unused_arg: u8
LL| 0| | { println!("not called") }
LL| | ;
LL| |
LL| |
LL| |
LL| |
LL| |
LL| 1| let _short_unused_closure_line_break_no_block = | _unused_arg: u8 |
LL| 0|println!("not called")
LL| | ;
LL| |
LL| 1| let _short_unused_closure_line_break_no_block2 =
LL| | | _unused_arg: u8 |
LL| 0| println!(
LL| 0| "not called"
LL| 0| )
LL| | ;
LL| |
LL| 1| let short_used_not_covered_closure_line_break_no_block_embedded_branch =
LL| | | _unused_arg: u8 |
LL| 0| println!(
LL| 0| "not called: {}",
LL| 0| if is_true { "check" } else { "me" }
LL| 0| )
LL| | ;
LL| |
LL| 1| let short_used_not_covered_closure_line_break_block_embedded_branch =
LL| 1| | _unused_arg: u8 |
LL| 0| {
LL| 0| println!(
LL| 0| "not called: {}",
LL| 0| if is_true { "check" } else { "me" }
LL| | )
LL| 0| }
LL| | ;
LL| |
LL| 1| let short_used_covered_closure_line_break_no_block_embedded_branch =
LL| 1| | _unused_arg: u8 |
LL| 1| println!(
LL| 1| "not called: {}",
LL| 1| if is_true { "check" } else { "me" }
^0
194| 1| )
195| | ;
196| |
197| 1| let short_used_covered_closure_line_break_block_embedded_branch =
198| 1| | _unused_arg: u8 |
199| 1| {
200| 1| println!(
201| 1| "not called: {}",
202| 1| if is_true { "check" } else { "me" }
LL| 1| )
LL| | ;
LL| |
LL| 1| let short_used_covered_closure_line_break_block_embedded_branch =
LL| 1| | _unused_arg: u8 |
LL| 1| {
LL| 1| println!(
LL| 1| "not called: {}",
LL| 1| if is_true { "check" } else { "me" }
^0
203| | )
204| 1| }
205| | ;
206| |
207| 1| if is_false {
208| 0| short_used_not_covered_closure_macro(0);
209| 0| short_used_not_covered_closure_line_break_no_block_embedded_branch(0);
210| 0| short_used_not_covered_closure_line_break_block_embedded_branch(0);
211| 1| }
212| 1| short_used_covered_closure_macro(0);
213| 1| short_used_covered_closure_line_break_no_block_embedded_branch(0);
214| 1| short_used_covered_closure_line_break_block_embedded_branch(0);
215| 1|}
LL| | )
LL| 1| }
LL| | ;
LL| |
LL| 1| if is_false {
LL| 0| short_used_not_covered_closure_macro(0);
LL| 0| short_used_not_covered_closure_line_break_no_block_embedded_branch(0);
LL| 0| short_used_not_covered_closure_line_break_block_embedded_branch(0);
LL| 1| }
LL| 1| short_used_covered_closure_macro(0);
LL| 1| short_used_covered_closure_line_break_no_block_embedded_branch(0);
LL| 1| short_used_covered_closure_line_break_block_embedded_branch(0);
LL| 1|}

80
tests/run-coverage/closure_macro.coverage
View File

@ -1,42 +1,42 @@
1| |// compile-flags: --edition=2018
2| |#![feature(no_coverage)]
3| |
4| |macro_rules! bail {
5| | ($msg:literal $(,)?) => {
6| | if $msg.len() > 0 {
7| | println!("no msg");
8| | } else {
9| | println!($msg);
10| | }
11| | return Err(String::from($msg));
12| | };
13| |}
14| |
15| |macro_rules! on_error {
16| | ($value:expr, $error_message:expr) => {
17| | $value.or_else(|e| { // FIXME(85000): no coverage in closure macros
18| | let message = format!($error_message, e);
19| | if message.len() > 0 {
20| | println!("{}", message);
21| | Ok(String::from("ok"))
22| | } else {
23| | bail!("error");
24| | }
25| | })
26| | };
27| |}
28| |
29| 1|fn load_configuration_files() -> Result<String, String> {
30| 1| Ok(String::from("config"))
31| 1|}
32| |
33| 1|pub fn main() -> Result<(), String> {
34| 1| println!("Starting service");
35| 1| let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
LL| |// compile-flags: --edition=2018
LL| |#![feature(no_coverage)]
LL| |
LL| |macro_rules! bail {
LL| | ($msg:literal $(,)?) => {
LL| | if $msg.len() > 0 {
LL| | println!("no msg");
LL| | } else {
LL| | println!($msg);
LL| | }
LL| | return Err(String::from($msg));
LL| | };
LL| |}
LL| |
LL| |macro_rules! on_error {
LL| | ($value:expr, $error_message:expr) => {
LL| | $value.or_else(|e| { // FIXME(85000): no coverage in closure macros
LL| | let message = format!($error_message, e);
LL| | if message.len() > 0 {
LL| | println!("{}", message);
LL| | Ok(String::from("ok"))
LL| | } else {
LL| | bail!("error");
LL| | }
LL| | })
LL| | };
LL| |}
LL| |
LL| 1|fn load_configuration_files() -> Result<String, String> {
LL| 1| Ok(String::from("config"))
LL| 1|}
LL| |
LL| 1|pub fn main() -> Result<(), String> {
LL| 1| println!("Starting service");
LL| 1| let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
^0
36| |
37| 1| let startup_delay_duration = String::from("arg");
38| 1| let _ = (config, startup_delay_duration);
39| 1| Ok(())
40| 1|}
LL| |
LL| 1| let startup_delay_duration = String::from("arg");
LL| 1| let _ = (config, startup_delay_duration);
LL| 1| Ok(())
LL| 1|}

162
tests/run-coverage/closure_macro_async.coverage
View File

@ -1,83 +1,83 @@
1| |// compile-flags: --edition=2018
2| |#![feature(no_coverage)]
3| |
4| |macro_rules! bail {
5| | ($msg:literal $(,)?) => {
6| | if $msg.len() > 0 {
7| | println!("no msg");
8| | } else {
9| | println!($msg);
10| | }
11| | return Err(String::from($msg));
12| | };
13| |}
14| |
15| |macro_rules! on_error {
16| | ($value:expr, $error_message:expr) => {
17| | $value.or_else(|e| { // FIXME(85000): no coverage in closure macros
18| | let message = format!($error_message, e);
19| | if message.len() > 0 {
20| | println!("{}", message);
21| | Ok(String::from("ok"))
22| | } else {
23| | bail!("error");
24| | }
25| | })
26| | };
27| |}
28| |
29| 1|fn load_configuration_files() -> Result<String, String> {
30| 1| Ok(String::from("config"))
31| 1|}
32| |
33| 1|pub async fn test() -> Result<(), String> {
34| 1| println!("Starting service");
35| 1| let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
LL| |// compile-flags: --edition=2018
LL| |#![feature(no_coverage)]
LL| |
LL| |macro_rules! bail {
LL| | ($msg:literal $(,)?) => {
LL| | if $msg.len() > 0 {
LL| | println!("no msg");
LL| | } else {
LL| | println!($msg);
LL| | }
LL| | return Err(String::from($msg));
LL| | };
LL| |}
LL| |
LL| |macro_rules! on_error {
LL| | ($value:expr, $error_message:expr) => {
LL| | $value.or_else(|e| { // FIXME(85000): no coverage in closure macros
LL| | let message = format!($error_message, e);
LL| | if message.len() > 0 {
LL| | println!("{}", message);
LL| | Ok(String::from("ok"))
LL| | } else {
LL| | bail!("error");
LL| | }
LL| | })
LL| | };
LL| |}
LL| |
LL| 1|fn load_configuration_files() -> Result<String, String> {
LL| 1| Ok(String::from("config"))
LL| 1|}
LL| |
LL| 1|pub async fn test() -> Result<(), String> {
LL| 1| println!("Starting service");
LL| 1| let config = on_error!(load_configuration_files(), "Error loading configs: {}")?;
^0
36| |
37| 1| let startup_delay_duration = String::from("arg");
38| 1| let _ = (config, startup_delay_duration);
39| 1| Ok(())
40| 1|}
41| |
42| |#[no_coverage]
43| |fn main() {
44| | executor::block_on(test());
45| |}
46| |
47| |mod executor {
48| | use core::{
49| | future::Future,
50| | pin::Pin,
51| | task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
52| | };
53| |
54| | #[no_coverage]
55| | pub fn block_on<F: Future>(mut future: F) -> F::Output {
56| | let mut future = unsafe { Pin::new_unchecked(&mut future) };
57| | use std::hint::unreachable_unchecked;
58| | static VTABLE: RawWakerVTable = RawWakerVTable::new(
59| |
60| | #[no_coverage]
61| | |_| unsafe { unreachable_unchecked() }, // clone
62| |
63| | #[no_coverage]
64| | |_| unsafe { unreachable_unchecked() }, // wake
65| |
66| | #[no_coverage]
67| | |_| unsafe { unreachable_unchecked() }, // wake_by_ref
68| |
69| | #[no_coverage]
70| | |_| (),
71| | );
72| | let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
73| | let mut context = Context::from_waker(&waker);
74| |
75| | loop {
76| | if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
77| | break val;
78| | }
79| | }
80| | }
81| |}
LL| |
LL| 1| let startup_delay_duration = String::from("arg");
LL| 1| let _ = (config, startup_delay_duration);
LL| 1| Ok(())
LL| 1|}
LL| |
LL| |#[no_coverage]
LL| |fn main() {
LL| | executor::block_on(test());
LL| |}
LL| |
LL| |mod executor {
LL| | use core::{
LL| | future::Future,
LL| | pin::Pin,
LL| | task::{Context, Poll, RawWaker, RawWakerVTable, Waker},
LL| | };
LL| |
LL| | #[no_coverage]
LL| | pub fn block_on<F: Future>(mut future: F) -> F::Output {
LL| | let mut future = unsafe { Pin::new_unchecked(&mut future) };
LL| | use std::hint::unreachable_unchecked;
LL| | static VTABLE: RawWakerVTable = RawWakerVTable::new(
LL| |
LL| | #[no_coverage]
LL| | |_| unsafe { unreachable_unchecked() }, // clone
LL| |
LL| | #[no_coverage]
LL| | |_| unsafe { unreachable_unchecked() }, // wake
LL| |
LL| | #[no_coverage]
LL| | |_| unsafe { unreachable_unchecked() }, // wake_by_ref
LL| |
LL| | #[no_coverage]
LL| | |_| (),
LL| | );
LL| | let waker = unsafe { Waker::from_raw(RawWaker::new(core::ptr::null(), &VTABLE)) };
LL| | let mut context = Context::from_waker(&waker);
LL| |
LL| | loop {
LL| | if let Poll::Ready(val) = future.as_mut().poll(&mut context) {
LL| | break val;
LL| | }
LL| | }
LL| | }
LL| |}

174
tests/run-coverage/conditions.coverage
View File

@ -1,94 +1,94 @@
1| |#![allow(unused_assignments, unused_variables)]
2| |
3| 1|fn main() {
4| 1| let mut countdown = 0;
5| 1| if true {
6| 1| countdown = 10;
7| 1| }
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| 1|fn main() {
LL| 1| let mut countdown = 0;
LL| 1| if true {
LL| 1| countdown = 10;
LL| 1| }
^0
8| |
9| | const B: u32 = 100;
10| 1| let x = if countdown > 7 {
11| 1| countdown -= 4;
12| 1| B
13| 0| } else if countdown > 2 {
14| 0| if countdown < 1 || countdown > 5 || countdown != 9 {
15| 0| countdown = 0;
16| 0| }
17| 0| countdown -= 5;
18| 0| countdown
19| | } else {
20| 0| return;
21| | };
22| |
23| 1| let mut countdown = 0;
24| 1| if true {
25| 1| countdown = 10;
26| 1| }
LL| |
LL| | const B: u32 = 100;
LL| 1| let x = if countdown > 7 {
LL| 1| countdown -= 4;
LL| 1| B
LL| 0| } else if countdown > 2 {
LL| 0| if countdown < 1 || countdown > 5 || countdown != 9 {
LL| 0| countdown = 0;
LL| 0| }
LL| 0| countdown -= 5;
LL| 0| countdown
LL| | } else {
LL| 0| return;
LL| | };
LL| |
LL| 1| let mut countdown = 0;
LL| 1| if true {
LL| 1| countdown = 10;
LL| 1| }
^0
27| |
28| 1| if countdown > 7 {
29| 1| countdown -= 4;
30| 1| } else if countdown > 2 {
LL| |
LL| 1| if countdown > 7 {
LL| 1| countdown -= 4;
LL| 1| } else if countdown > 2 {
^0
31| 0| if countdown < 1 || countdown > 5 || countdown != 9 {
32| 0| countdown = 0;
33| 0| }
34| 0| countdown -= 5;
35| | } else {
36| 0| return;
37| | }
38| |
39| 1| if true {
40| 1| let mut countdown = 0;
41| 1| if true {
42| 1| countdown = 10;
43| 1| }
LL| 0| if countdown < 1 || countdown > 5 || countdown != 9 {
LL| 0| countdown = 0;
LL| 0| }
LL| 0| countdown -= 5;
LL| | } else {
LL| 0| return;
LL| | }
LL| |
LL| 1| if true {
LL| 1| let mut countdown = 0;
LL| 1| if true {
LL| 1| countdown = 10;
LL| 1| }
^0
44| |
45| 1| if countdown > 7 {
46| 1| countdown -= 4;
47| 1| }
48| 0| else if countdown > 2 {
49| 0| if countdown < 1 || countdown > 5 || countdown != 9 {
50| 0| countdown = 0;
51| 0| }
52| 0| countdown -= 5;
53| | } else {
54| 0| return;
55| | }
56| 0| }
57| |
58| |
59| 1| let mut countdown = 0;
60| 1| if true {
61| 1| countdown = 1;
62| 1| }
LL| |
LL| 1| if countdown > 7 {
LL| 1| countdown -= 4;
LL| 1| }
LL| 0| else if countdown > 2 {
LL| 0| if countdown < 1 || countdown > 5 || countdown != 9 {
LL| 0| countdown = 0;
LL| 0| }
LL| 0| countdown -= 5;
LL| | } else {
LL| 0| return;
LL| | }
LL| 0| }
LL| |
LL| |
LL| 1| let mut countdown = 0;
LL| 1| if true {
LL| 1| countdown = 1;
LL| 1| }
^0
63| |
64| 1| let z = if countdown > 7 {
LL| |
LL| 1| let z = if countdown > 7 {
^0
65| 0| countdown -= 4;
66| 1| } else if countdown > 2 {
67| 0| if countdown < 1 || countdown > 5 || countdown != 9 {
68| 0| countdown = 0;
69| 0| }
70| 0| countdown -= 5;
71| | } else {
72| 1| let should_be_reachable = countdown;
73| 1| println!("reached");
74| 1| return;
75| | };
76| |
77| 0| let w = if countdown > 7 {
78| 0| countdown -= 4;
79| 0| } else if countdown > 2 {
80| 0| if countdown < 1 || countdown > 5 || countdown != 9 {
81| 0| countdown = 0;
82| 0| }
83| 0| countdown -= 5;
84| | } else {
85| 0| return;
86| | };
87| 1|}
LL| 0| countdown -= 4;
LL| 1| } else if countdown > 2 {
LL| 0| if countdown < 1 || countdown > 5 || countdown != 9 {
LL| 0| countdown = 0;
LL| 0| }
LL| 0| countdown -= 5;
LL| | } else {
LL| 1| let should_be_reachable = countdown;
LL| 1| println!("reached");
LL| 1| return;
LL| | };
LL| |
LL| 0| let w = if countdown > 7 {
LL| 0| countdown -= 4;
LL| 0| } else if countdown > 2 {
LL| 0| if countdown < 1 || countdown > 5 || countdown != 9 {
LL| 0| countdown = 0;
LL| 0| }
LL| 0| countdown -= 5;
LL| | } else {
LL| 0| return;
LL| | };
LL| 1|}

138
tests/run-coverage/continue.coverage
View File

@ -1,70 +1,70 @@
1| |#![allow(unused_assignments, unused_variables)]
2| |
3| 1|fn main() {
4| 1| let is_true = std::env::args().len() == 1;
5| 1|
6| 1| let mut x = 0;
7| 11| for _ in 0..10 {
8| 10| match is_true {
9| | true => {
10| 10| continue;
11| | }
12| 0| _ => {
13| 0| x = 1;
14| 0| }
15| 0| }
16| 0| x = 3;
17| | }
18| 11| for _ in 0..10 {
19| 10| match is_true {
20| 0| false => {
21| 0| x = 1;
22| 0| }
23| | _ => {
24| 10| continue;
25| | }
26| | }
27| 0| x = 3;
28| | }
29| 11| for _ in 0..10 {
30| 10| match is_true {
31| 10| true => {
32| 10| x = 1;
33| 10| }
34| | _ => {
35| 0| continue;
36| | }
37| | }
38| 10| x = 3;
39| | }
40| 11| for _ in 0..10 {
41| 10| if is_true {
42| 10| continue;
43| 0| }
44| 0| x = 3;
45| | }
46| 11| for _ in 0..10 {
47| 10| match is_true {
48| 0| false => {
49| 0| x = 1;
50| 0| }
51| 10| _ => {
52| 10| let _ = x;
53| 10| }
54| | }
55| 10| x = 3;
56| | }
57| 1| for _ in 0..10 {
58| 1| match is_true {
59| 0| false => {
60| 0| x = 1;
61| 0| }
62| | _ => {
63| 1| break;
64| | }
65| | }
66| 0| x = 3;
67| | }
68| 1| let _ = x;
69| 1|}
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| 1|fn main() {
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1|
LL| 1| let mut x = 0;
LL| 11| for _ in 0..10 {
LL| 10| match is_true {
LL| | true => {
LL| 10| continue;
LL| | }
LL| 0| _ => {
LL| 0| x = 1;
LL| 0| }
LL| 0| }
LL| 0| x = 3;
LL| | }
LL| 11| for _ in 0..10 {
LL| 10| match is_true {
LL| 0| false => {
LL| 0| x = 1;
LL| 0| }
LL| | _ => {
LL| 10| continue;
LL| | }
LL| | }
LL| 0| x = 3;
LL| | }
LL| 11| for _ in 0..10 {
LL| 10| match is_true {
LL| 10| true => {
LL| 10| x = 1;
LL| 10| }
LL| | _ => {
LL| 0| continue;
LL| | }
LL| | }
LL| 10| x = 3;
LL| | }
LL| 11| for _ in 0..10 {
LL| 10| if is_true {
LL| 10| continue;
LL| 0| }
LL| 0| x = 3;
LL| | }
LL| 11| for _ in 0..10 {
LL| 10| match is_true {
LL| 0| false => {
LL| 0| x = 1;
LL| 0| }
LL| 10| _ => {
LL| 10| let _ = x;
LL| 10| }
LL| | }
LL| 10| x = 3;
LL| | }
LL| 1| for _ in 0..10 {
LL| 1| match is_true {
LL| 0| false => {
LL| 0| x = 1;
LL| 0| }
LL| | _ => {
LL| 1| break;
LL| | }
LL| | }
LL| 0| x = 3;
LL| | }
LL| 1| let _ = x;
LL| 1|}

74
tests/run-coverage/dead_code.coverage
View File

@ -1,39 +1,39 @@
1| |#![allow(unused_assignments, unused_variables)]
2| |
3| 0|pub fn unused_pub_fn_not_in_library() {
4| 0| // Initialize test constants in a way that cannot be determined at compile time, to ensure
5| 0| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
6| 0| // dependent conditions.
7| 0| let is_true = std::env::args().len() == 1;
8| 0|
9| 0| let mut countdown = 0;
10| 0| if is_true {
11| 0| countdown = 10;
12| 0| }
13| 0|}
14| |
15| 0|fn unused_fn() {
16| 0| // Initialize test constants in a way that cannot be determined at compile time, to ensure
17| 0| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
18| 0| // dependent conditions.
19| 0| let is_true = std::env::args().len() == 1;
20| 0|
21| 0| let mut countdown = 0;
22| 0| if is_true {
23| 0| countdown = 10;
24| 0| }
25| 0|}
26| |
27| 1|fn main() {
28| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
29| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
30| 1| // dependent conditions.
31| 1| let is_true = std::env::args().len() == 1;
32| 1|
33| 1| let mut countdown = 0;
34| 1| if is_true {
35| 1| countdown = 10;
36| 1| }
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| 0|pub fn unused_pub_fn_not_in_library() {
LL| 0| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 0| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 0| // dependent conditions.
LL| 0| let is_true = std::env::args().len() == 1;
LL| 0|
LL| 0| let mut countdown = 0;
LL| 0| if is_true {
LL| 0| countdown = 10;
LL| 0| }
LL| 0|}
LL| |
LL| 0|fn unused_fn() {
LL| 0| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 0| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 0| // dependent conditions.
LL| 0| let is_true = std::env::args().len() == 1;
LL| 0|
LL| 0| let mut countdown = 0;
LL| 0| if is_true {
LL| 0| countdown = 10;
LL| 0| }
LL| 0|}
LL| |
LL| 1|fn main() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1|
LL| 1| let mut countdown = 0;
LL| 1| if is_true {
LL| 1| countdown = 10;
LL| 1| }
^0
37| 1|}
LL| 1|}

66
tests/run-coverage/drop_trait.coverage
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@ -1,34 +1,34 @@
1| |#![allow(unused_assignments)]
2| |// failure-status: 1
3| |
4| |struct Firework {
5| | strength: i32,
6| |}
7| |
8| |impl Drop for Firework {
9| 2| fn drop(&mut self) {
10| 2| println!("BOOM times {}!!!", self.strength);
11| 2| }
12| |}
13| |
14| 1|fn main() -> Result<(),u8> {
15| 1| let _firecracker = Firework { strength: 1 };
16| 1|
17| 1| let _tnt = Firework { strength: 100 };
18| 1|
19| 1| if true {
20| 1| println!("Exiting with error...");
21| 1| return Err(1);
22| 0| }
23| 0|
24| 0| let _ = Firework { strength: 1000 };
25| 0|
26| 0| Ok(())
27| 1|}
28| |
29| |// Expected program output:
30| |// Exiting with error...
31| |// BOOM times 100!!!
32| |// BOOM times 1!!!
33| |// Error: 1
LL| |#![allow(unused_assignments)]
LL| |// failure-status: 1
LL| |
LL| |struct Firework {
LL| | strength: i32,
LL| |}
LL| |
LL| |impl Drop for Firework {
LL| 2| fn drop(&mut self) {
LL| 2| println!("BOOM times {}!!!", self.strength);
LL| 2| }
LL| |}
LL| |
LL| 1|fn main() -> Result<(),u8> {
LL| 1| let _firecracker = Firework { strength: 1 };
LL| 1|
LL| 1| let _tnt = Firework { strength: 100 };
LL| 1|
LL| 1| if true {
LL| 1| println!("Exiting with error...");
LL| 1| return Err(1);
LL| 0| }
LL| 0|
LL| 0| let _ = Firework { strength: 1000 };
LL| 0|
LL| 0| Ok(())
LL| 1|}
LL| |
LL| |// Expected program output:
LL| |// Exiting with error...
LL| |// BOOM times 100!!!
LL| |// BOOM times 1!!!
LL| |// Error: 1

60
tests/run-coverage/generator.coverage
View File

@ -1,32 +1,32 @@
1| |#![feature(generators, generator_trait)]
2| |
3| |use std::ops::{Generator, GeneratorState};
4| |use std::pin::Pin;
5| |
6| |// The following implementation of a function called from a `yield` statement
7| |// (apparently requiring the Result and the `String` type or constructor)
8| |// creates conditions where the `generator::StateTransform` MIR transform will
9| |// drop all `Counter` `Coverage` statements from a MIR. `simplify.rs` has logic
10| |// to handle this condition, and still report dead block coverage.
11| 1|fn get_u32(val: bool) -> Result<u32, String> {
12| 1| if val { Ok(1) } else { Err(String::from("some error")) }
LL| |#![feature(generators, generator_trait)]
LL| |
LL| |use std::ops::{Generator, GeneratorState};
LL| |use std::pin::Pin;
LL| |
LL| |// The following implementation of a function called from a `yield` statement
LL| |// (apparently requiring the Result and the `String` type or constructor)
LL| |// creates conditions where the `generator::StateTransform` MIR transform will
LL| |// drop all `Counter` `Coverage` statements from a MIR. `simplify.rs` has logic
LL| |// to handle this condition, and still report dead block coverage.
LL| 1|fn get_u32(val: bool) -> Result<u32, String> {
LL| 1| if val { Ok(1) } else { Err(String::from("some error")) }
^0
13| 1|}
14| |
15| 1|fn main() {
16| 1| let is_true = std::env::args().len() == 1;
17| 1| let mut generator = || {
18| 1| yield get_u32(is_true);
19| 1| return "foo";
20| 1| };
21| |
22| 1| match Pin::new(&mut generator).resume(()) {
23| 1| GeneratorState::Yielded(Ok(1)) => {}
24| 0| _ => panic!("unexpected return from resume"),
25| | }
26| 1| match Pin::new(&mut generator).resume(()) {
27| 1| GeneratorState::Complete("foo") => {}
28| 0| _ => panic!("unexpected return from resume"),
29| | }
30| 1|}
LL| 1|}
LL| |
LL| 1|fn main() {
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1| let mut generator = || {
LL| 1| yield get_u32(is_true);
LL| 1| return "foo";
LL| 1| };
LL| |
LL| 1| match Pin::new(&mut generator).resume(()) {
LL| 1| GeneratorState::Yielded(Ok(1)) => {}
LL| 0| _ => panic!("unexpected return from resume"),
LL| | }
LL| 1| match Pin::new(&mut generator).resume(()) {
LL| 1| GeneratorState::Complete("foo") => {}
LL| 0| _ => panic!("unexpected return from resume"),
LL| | }
LL| 1|}

120
tests/run-coverage/generics.coverage
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@ -1,71 +1,71 @@
1| |#![allow(unused_assignments)]
2| |// failure-status: 1
3| |
4| |struct Firework<T> where T: Copy + std::fmt::Display {
5| | strength: T,
6| |}
7| |
8| |impl<T> Firework<T> where T: Copy + std::fmt::Display {
9| | #[inline(always)]
10| 3| fn set_strength(&mut self, new_strength: T) {
11| 3| self.strength = new_strength;
12| 3| }
LL| |#![allow(unused_assignments)]
LL| |// failure-status: 1
LL| |
LL| |struct Firework<T> where T: Copy + std::fmt::Display {
LL| | strength: T,
LL| |}
LL| |
LL| |impl<T> Firework<T> where T: Copy + std::fmt::Display {
LL| | #[inline(always)]
LL| 3| fn set_strength(&mut self, new_strength: T) {
LL| 3| self.strength = new_strength;
LL| 3| }
------------------
| <generics::Firework<f64>>::set_strength:
| 10| 2| fn set_strength(&mut self, new_strength: T) {
| 11| 2| self.strength = new_strength;
| 12| 2| }
| LL| 2| fn set_strength(&mut self, new_strength: T) {
| LL| 2| self.strength = new_strength;
| LL| 2| }
------------------
| <generics::Firework<i32>>::set_strength:
| 10| 1| fn set_strength(&mut self, new_strength: T) {
| 11| 1| self.strength = new_strength;
| 12| 1| }
| LL| 1| fn set_strength(&mut self, new_strength: T) {
| LL| 1| self.strength = new_strength;
| LL| 1| }
------------------
13| |}
14| |
15| |impl<T> Drop for Firework<T> where T: Copy + std::fmt::Display {
16| | #[inline(always)]
17| 2| fn drop(&mut self) {
18| 2| println!("BOOM times {}!!!", self.strength);
19| 2| }
LL| |}
LL| |
LL| |impl<T> Drop for Firework<T> where T: Copy + std::fmt::Display {
LL| | #[inline(always)]
LL| 2| fn drop(&mut self) {
LL| 2| println!("BOOM times {}!!!", self.strength);
LL| 2| }
------------------
| <generics::Firework<f64> as core::ops::drop::Drop>::drop:
| 17| 1| fn drop(&mut self) {
| 18| 1| println!("BOOM times {}!!!", self.strength);
| 19| 1| }
| LL| 1| fn drop(&mut self) {
| LL| 1| println!("BOOM times {}!!!", self.strength);
| LL| 1| }
------------------
| <generics::Firework<i32> as core::ops::drop::Drop>::drop:
| 17| 1| fn drop(&mut self) {
| 18| 1| println!("BOOM times {}!!!", self.strength);
| 19| 1| }
| LL| 1| fn drop(&mut self) {
| LL| 1| println!("BOOM times {}!!!", self.strength);
| LL| 1| }
------------------
20| |}
21| |
22| 1|fn main() -> Result<(),u8> {
23| 1| let mut firecracker = Firework { strength: 1 };
24| 1| firecracker.set_strength(2);
25| 1|
26| 1| let mut tnt = Firework { strength: 100.1 };
27| 1| tnt.set_strength(200.1);
28| 1| tnt.set_strength(300.3);
29| 1|
30| 1| if true {
31| 1| println!("Exiting with error...");
32| 1| return Err(1);
33| 0| }
34| 0|
35| 0|
36| 0|
37| 0|
38| 0|
39| 0| let _ = Firework { strength: 1000 };
40| 0|
41| 0| Ok(())
42| 1|}
43| |
44| |// Expected program output:
45| |// Exiting with error...
46| |// BOOM times 100!!!
47| |// BOOM times 1!!!
48| |// Error: 1
LL| |}
LL| |
LL| 1|fn main() -> Result<(),u8> {
LL| 1| let mut firecracker = Firework { strength: 1 };
LL| 1| firecracker.set_strength(2);
LL| 1|
LL| 1| let mut tnt = Firework { strength: 100.1 };
LL| 1| tnt.set_strength(200.1);
LL| 1| tnt.set_strength(300.3);
LL| 1|
LL| 1| if true {
LL| 1| println!("Exiting with error...");
LL| 1| return Err(1);
LL| 0| }
LL| 0|
LL| 0|
LL| 0|
LL| 0|
LL| 0|
LL| 0| let _ = Firework { strength: 1000 };
LL| 0|
LL| 0| Ok(())
LL| 1|}
LL| |
LL| |// Expected program output:
LL| |// Exiting with error...
LL| |// BOOM times 100!!!
LL| |// BOOM times 1!!!
LL| |// Error: 1

56
tests/run-coverage/if.coverage
View File

@ -1,30 +1,30 @@
1| |#![allow(unused_assignments, unused_variables)]
2| |
3| 1|fn main() {
4| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
5| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
6| 1| // dependent conditions.
7| 1| let
8| 1| is_true
9| 1| =
10| 1| std::env::args().len()
11| 1| ==
12| 1| 1
13| 1| ;
14| 1| let
15| 1| mut
16| 1| countdown
17| 1| =
18| 1| 0
19| 1| ;
20| 1| if
21| 1| is_true
22| 1| {
23| 1| countdown
24| 1| =
25| 1| 10
26| 1| ;
27| 1| }
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| 1|fn main() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let
LL| 1| is_true
LL| 1| =
LL| 1| std::env::args().len()
LL| 1| ==
LL| 1| 1
LL| 1| ;
LL| 1| let
LL| 1| mut
LL| 1| countdown
LL| 1| =
LL| 1| 0
LL| 1| ;
LL| 1| if
LL| 1| is_true
LL| 1| {
LL| 1| countdown
LL| 1| =
LL| 1| 10
LL| 1| ;
LL| 1| }
^0
28| 1|}
LL| 1|}

80
tests/run-coverage/if_else.coverage
View File

@ -1,41 +1,41 @@
1| |#![allow(unused_assignments, unused_variables)]
2| |
3| 1|fn main() {
4| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
5| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
6| 1| // dependent conditions.
7| 1| let is_true = std::env::args().len() == 1;
8| 1|
9| 1| let mut countdown = 0;
10| 1| if
11| 1| is_true
12| 1| {
13| 1| countdown
14| 1| =
15| 1| 10
16| 1| ;
17| 1| }
18| | else // Note coverage region difference without semicolon
19| | {
20| 0| countdown
21| 0| =
22| 0| 100
23| | }
24| |
25| | if
26| 1| is_true
27| 1| {
28| 1| countdown
29| 1| =
30| 1| 10
31| 1| ;
32| 1| }
33| | else
34| 0| {
35| 0| countdown
36| 0| =
37| 0| 100
38| 0| ;
39| 0| }
40| 1|}
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| 1|fn main() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1|
LL| 1| let mut countdown = 0;
LL| 1| if
LL| 1| is_true
LL| 1| {
LL| 1| countdown
LL| 1| =
LL| 1| 10
LL| 1| ;
LL| 1| }
LL| | else // Note coverage region difference without semicolon
LL| | {
LL| 0| countdown
LL| 0| =
LL| 0| 100
LL| | }
LL| |
LL| | if
LL| 1| is_true
LL| 1| {
LL| 1| countdown
LL| 1| =
LL| 1| 10
LL| 1| ;
LL| 1| }
LL| | else
LL| 0| {
LL| 0| countdown
LL| 0| =
LL| 0| 100
LL| 0| ;
LL| 0| }
LL| 1|}

54
tests/run-coverage/inline-dead.coverage
View File

@ -1,28 +1,28 @@
1| |// Regression test for issue #98833.
2| |// compile-flags: -Zinline-mir -Cdebug-assertions=off
3| |
4| 1|fn main() {
5| 1| println!("{}", live::<false>());
6| 1|
7| 1| let f = |x: bool| {
8| | debug_assert!(
9| 0| x
10| | );
11| 1| };
12| 1| f(false);
13| 1|}
14| |
15| |#[inline]
16| 1|fn live<const B: bool>() -> u32 {
17| 1| if B {
18| 0| dead()
19| | } else {
20| 1| 0
21| | }
22| 1|}
23| |
24| |#[inline]
25| 0|fn dead() -> u32 {
26| 0| 42
27| 0|}
LL| |// Regression test for issue #98833.
LL| |// compile-flags: -Zinline-mir -Cdebug-assertions=off
LL| |
LL| 1|fn main() {
LL| 1| println!("{}", live::<false>());
LL| 1|
LL| 1| let f = |x: bool| {
LL| | debug_assert!(
LL| 0| x
LL| | );
LL| 1| };
LL| 1| f(false);
LL| 1|}
LL| |
LL| |#[inline]
LL| 1|fn live<const B: bool>() -> u32 {
LL| 1| if B {
LL| 0| dead()
LL| | } else {
LL| 1| 0
LL| | }
LL| 1|}
LL| |
LL| |#[inline]
LL| 0|fn dead() -> u32 {
LL| 0| 42
LL| 0|}

102
tests/run-coverage/inline.coverage
View File

@ -1,54 +1,54 @@
1| |// compile-flags: -Zinline-mir
2| |
3| |use std::fmt::Display;
4| |
5| 1|fn main() {
6| 1| permutations(&['a', 'b', 'c']);
7| 1|}
8| |
9| |#[inline(always)]
10| 1|fn permutations<T: Copy + Display>(xs: &[T]) {
11| 1| let mut ys = xs.to_owned();
12| 1| permutate(&mut ys, 0);
13| 1|}
14| |
15| 16|fn permutate<T: Copy + Display>(xs: &mut [T], k: usize) {
16| 16| let n = length(xs);
17| 16| if k == n {
18| 6| display(xs);
19| 10| } else if k < n {
20| 15| for i in k..n {
LL| |// compile-flags: -Zinline-mir
LL| |
LL| |use std::fmt::Display;
LL| |
LL| 1|fn main() {
LL| 1| permutations(&['a', 'b', 'c']);
LL| 1|}
LL| |
LL| |#[inline(always)]
LL| 1|fn permutations<T: Copy + Display>(xs: &[T]) {
LL| 1| let mut ys = xs.to_owned();
LL| 1| permutate(&mut ys, 0);
LL| 1|}
LL| |
LL| 16|fn permutate<T: Copy + Display>(xs: &mut [T], k: usize) {
LL| 16| let n = length(xs);
LL| 16| if k == n {
LL| 6| display(xs);
LL| 10| } else if k < n {
LL| 15| for i in k..n {
^10
21| 15| swap(xs, i, k);
22| 15| permutate(xs, k + 1);
23| 15| swap(xs, i, k);
24| 15| }
25| 0| } else {
26| 0| error();
27| 0| }
28| 16|}
29| |
30| 16|fn length<T>(xs: &[T]) -> usize {
31| 16| xs.len()
32| 16|}
33| |
34| |#[inline]
35| 30|fn swap<T: Copy>(xs: &mut [T], i: usize, j: usize) {
36| 30| let t = xs[i];
37| 30| xs[i] = xs[j];
38| 30| xs[j] = t;
39| 30|}
40| |
41| 6|fn display<T: Display>(xs: &[T]) {
42| 24| for x in xs {
LL| 15| swap(xs, i, k);
LL| 15| permutate(xs, k + 1);
LL| 15| swap(xs, i, k);
LL| 15| }
LL| 0| } else {
LL| 0| error();
LL| 0| }
LL| 16|}
LL| |
LL| 16|fn length<T>(xs: &[T]) -> usize {
LL| 16| xs.len()
LL| 16|}
LL| |
LL| |#[inline]
LL| 30|fn swap<T: Copy>(xs: &mut [T], i: usize, j: usize) {
LL| 30| let t = xs[i];
LL| 30| xs[i] = xs[j];
LL| 30| xs[j] = t;
LL| 30|}
LL| |
LL| 6|fn display<T: Display>(xs: &[T]) {
LL| 24| for x in xs {
^18
43| 18| print!("{}", x);
44| 18| }
45| 6| println!();
46| 6|}
47| |
48| |#[inline(always)]
49| 0|fn error() {
50| 0| panic!("error");
51| 0|}
LL| 18| print!("{}", x);
LL| 18| }
LL| 6| println!();
LL| 6|}
LL| |
LL| |#[inline(always)]
LL| 0|fn error() {
LL| 0| panic!("error");
LL| 0|}

114
tests/run-coverage/inner_items.coverage
View File

@ -1,60 +1,60 @@
1| |#![allow(unused_assignments, unused_variables, dead_code)]
2| |
3| 1|fn main() {
4| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
5| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
6| 1| // dependent conditions.
7| 1| let is_true = std::env::args().len() == 1;
8| 1|
9| 1| let mut countdown = 0;
10| 1| if is_true {
11| 1| countdown = 10;
12| 1| }
LL| |#![allow(unused_assignments, unused_variables, dead_code)]
LL| |
LL| 1|fn main() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1|
LL| 1| let mut countdown = 0;
LL| 1| if is_true {
LL| 1| countdown = 10;
LL| 1| }
^0
13| |
14| | mod in_mod {
15| | const IN_MOD_CONST: u32 = 1000;
16| | }
17| |
18| 3| fn in_func(a: u32) {
19| 3| let b = 1;
20| 3| let c = a + b;
21| 3| println!("c = {}", c)
22| 3| }
23| |
24| | struct InStruct {
25| | in_struct_field: u32,
26| | }
27| |
28| | const IN_CONST: u32 = 1234;
29| |
30| | trait InTrait {
31| | fn trait_func(&mut self, incr: u32);
32| |
33| 1| fn default_trait_func(&mut self) {
34| 1| in_func(IN_CONST);
35| 1| self.trait_func(IN_CONST);
36| 1| }
37| | }
38| |
39| | impl InTrait for InStruct {
40| 1| fn trait_func(&mut self, incr: u32) {
41| 1| self.in_struct_field += incr;
42| 1| in_func(self.in_struct_field);
43| 1| }
44| | }
45| |
46| | type InType = String;
47| |
48| 1| if is_true {
49| 1| in_func(countdown);
50| 1| }
LL| |
LL| | mod in_mod {
LL| | const IN_MOD_CONST: u32 = 1000;
LL| | }
LL| |
LL| 3| fn in_func(a: u32) {
LL| 3| let b = 1;
LL| 3| let c = a + b;
LL| 3| println!("c = {}", c)
LL| 3| }
LL| |
LL| | struct InStruct {
LL| | in_struct_field: u32,
LL| | }
LL| |
LL| | const IN_CONST: u32 = 1234;
LL| |
LL| | trait InTrait {
LL| | fn trait_func(&mut self, incr: u32);
LL| |
LL| 1| fn default_trait_func(&mut self) {
LL| 1| in_func(IN_CONST);
LL| 1| self.trait_func(IN_CONST);
LL| 1| }
LL| | }
LL| |
LL| | impl InTrait for InStruct {
LL| 1| fn trait_func(&mut self, incr: u32) {
LL| 1| self.in_struct_field += incr;
LL| 1| in_func(self.in_struct_field);
LL| 1| }
LL| | }
LL| |
LL| | type InType = String;
LL| |
LL| 1| if is_true {
LL| 1| in_func(countdown);
LL| 1| }
^0
51| |
52| 1| let mut val = InStruct {
53| 1| in_struct_field: 101,
54| 1| };
55| 1|
56| 1| val.default_trait_func();
57| 1|}
LL| |
LL| 1| let mut val = InStruct {
LL| 1| in_struct_field: 101,
LL| 1| };
LL| 1|
LL| 1| val.default_trait_func();
LL| 1|}

28
tests/run-coverage/issue-83601.coverage
View File

@ -1,16 +1,16 @@
1| |// Shows that rust-lang/rust/83601 is resolved
2| |
3| 3|#[derive(Debug, PartialEq, Eq)]
LL| |// Shows that rust-lang/rust/83601 is resolved
LL| |
LL| 3|#[derive(Debug, PartialEq, Eq)]
^2
4| |struct Foo(u32);
5| |
6| 1|fn main() {
7| 1| let bar = Foo(1);
8| 1| assert_eq!(bar, Foo(1));
9| 1| let baz = Foo(0);
10| 1| assert_ne!(baz, Foo(1));
11| 1| println!("{:?}", Foo(1));
12| 1| println!("{:?}", bar);
13| 1| println!("{:?}", baz);
14| 1|}
LL| |struct Foo(u32);
LL| |
LL| 1|fn main() {
LL| 1| let bar = Foo(1);
LL| 1| assert_eq!(bar, Foo(1));
LL| 1| let baz = Foo(0);
LL| 1| assert_ne!(baz, Foo(1));
LL| 1| println!("{:?}", Foo(1));
LL| 1| println!("{:?}", bar);
LL| 1| println!("{:?}", baz);
LL| 1|}

364
tests/run-coverage/issue-84561.coverage
View File

@ -1,189 +1,189 @@
1| |// This demonstrated Issue #84561: function-like macros produce unintuitive coverage results.
2| |
3| |// failure-status: 101
4| 21|#[derive(PartialEq, Eq)]
5| |struct Foo(u32);
6| 1|fn test3() {
7| 1| let is_true = std::env::args().len() == 1;
8| 1| let bar = Foo(1);
9| 1| assert_eq!(bar, Foo(1));
10| 1| let baz = Foo(0);
11| 1| assert_ne!(baz, Foo(1));
12| 1| println!("{:?}", Foo(1));
13| 1| println!("{:?}", bar);
14| 1| println!("{:?}", baz);
15| 1|
16| 1| assert_eq!(Foo(1), Foo(1));
17| 1| assert_ne!(Foo(0), Foo(1));
18| 1| assert_eq!(Foo(2), Foo(2));
19| 1| let bar = Foo(0);
20| 1| assert_ne!(bar, Foo(3));
21| 1| assert_ne!(Foo(0), Foo(4));
22| 1| assert_eq!(Foo(3), Foo(3), "with a message");
LL| |// This demonstrated Issue #84561: function-like macros produce unintuitive coverage results.
LL| |
LL| |// failure-status: 101
LL| 21|#[derive(PartialEq, Eq)]
LL| |struct Foo(u32);
LL| 1|fn test3() {
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1| let bar = Foo(1);
LL| 1| assert_eq!(bar, Foo(1));
LL| 1| let baz = Foo(0);
LL| 1| assert_ne!(baz, Foo(1));
LL| 1| println!("{:?}", Foo(1));
LL| 1| println!("{:?}", bar);
LL| 1| println!("{:?}", baz);
LL| 1|
LL| 1| assert_eq!(Foo(1), Foo(1));
LL| 1| assert_ne!(Foo(0), Foo(1));
LL| 1| assert_eq!(Foo(2), Foo(2));
LL| 1| let bar = Foo(0);
LL| 1| assert_ne!(bar, Foo(3));
LL| 1| assert_ne!(Foo(0), Foo(4));
LL| 1| assert_eq!(Foo(3), Foo(3), "with a message");
^0
23| 1| println!("{:?}", bar);
24| 1| println!("{:?}", Foo(1));
25| 1|
26| 1| assert_ne!(Foo(0), Foo(5), "{}", if is_true { "true message" } else { "false message" });
LL| 1| println!("{:?}", bar);
LL| 1| println!("{:?}", Foo(1));
LL| 1|
LL| 1| assert_ne!(Foo(0), Foo(5), "{}", if is_true { "true message" } else { "false message" });
^0 ^0 ^0
27| 1| assert_ne!(
28| | Foo(0)
29| | ,
30| | Foo(5)
31| | ,
32| 0| "{}"
33| 0| ,
34| 0| if
35| 0| is_true
36| | {
37| 0| "true message"
38| | } else {
39| 0| "false message"
40| | }
41| | );
42| |
43| 1| let is_true = std::env::args().len() == 1;
44| 1|
45| 1| assert_eq!(
46| 1| Foo(1),
47| 1| Foo(1)
48| 1| );
49| 1| assert_ne!(
50| 1| Foo(0),
51| 1| Foo(1)
52| 1| );
53| 1| assert_eq!(
54| 1| Foo(2),
55| 1| Foo(2)
56| 1| );
57| 1| let bar = Foo(1);
58| 1| assert_ne!(
59| 1| bar,
60| 1| Foo(3)
61| 1| );
62| 1| if is_true {
63| 1| assert_ne!(
64| 1| Foo(0),
65| 1| Foo(4)
66| 1| );
67| | } else {
68| 0| assert_eq!(
69| 0| Foo(3),
70| 0| Foo(3)
71| 0| );
72| | }
73| 1| if is_true {
74| 1| assert_ne!(
75| | Foo(0),
76| | Foo(4),
77| 0| "with a message"
78| | );
79| | } else {
80| 0| assert_eq!(
81| | Foo(3),
82| | Foo(3),
83| 0| "with a message"
84| | );
85| | }
86| 1| assert_ne!(
87| 1| if is_true {
88| 1| Foo(0)
89| | } else {
90| 0| Foo(1)
91| | },
92| | Foo(5)
93| | );
94| 1| assert_ne!(
95| 1| Foo(5),
96| 1| if is_true {
97| 1| Foo(0)
98| | } else {
99| 0| Foo(1)
100| | }
101| | );
102| 1| assert_ne!(
103| 1| if is_true {
104| 1| assert_eq!(
105| 1| Foo(3),
106| 1| Foo(3)
107| 1| );
108| 1| Foo(0)
109| | } else {
110| 0| assert_ne!(
111| 0| if is_true {
112| 0| Foo(0)
113| | } else {
114| 0| Foo(1)
115| | },
116| | Foo(5)
117| | );
118| 0| Foo(1)
119| | },
120| | Foo(5),
121| 0| "with a message"
122| | );
123| 1| assert_eq!(
124| | Foo(1),
125| | Foo(3),
126| 1| "this assert should fail"
127| | );
128| 0| assert_eq!(
129| | Foo(3),
130| | Foo(3),
131| 0| "this assert should not be reached"
132| | );
133| 0|}
134| |
135| |impl std::fmt::Debug for Foo {
136| | fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
137| 7| write!(f, "try and succeed")?;
LL| 1| assert_ne!(
LL| | Foo(0)
LL| | ,
LL| | Foo(5)
LL| | ,
LL| 0| "{}"
LL| 0| ,
LL| 0| if
LL| 0| is_true
LL| | {
LL| 0| "true message"
LL| | } else {
LL| 0| "false message"
LL| | }
LL| | );
LL| |
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1|
LL| 1| assert_eq!(
LL| 1| Foo(1),
LL| 1| Foo(1)
LL| 1| );
LL| 1| assert_ne!(
LL| 1| Foo(0),
LL| 1| Foo(1)
LL| 1| );
LL| 1| assert_eq!(
LL| 1| Foo(2),
LL| 1| Foo(2)
LL| 1| );
LL| 1| let bar = Foo(1);
LL| 1| assert_ne!(
LL| 1| bar,
LL| 1| Foo(3)
LL| 1| );
LL| 1| if is_true {
LL| 1| assert_ne!(
LL| 1| Foo(0),
LL| 1| Foo(4)
LL| 1| );
LL| | } else {
LL| 0| assert_eq!(
LL| 0| Foo(3),
LL| 0| Foo(3)
LL| 0| );
LL| | }
LL| 1| if is_true {
LL| 1| assert_ne!(
LL| | Foo(0),
LL| | Foo(4),
LL| 0| "with a message"
LL| | );
LL| | } else {
LL| 0| assert_eq!(
LL| | Foo(3),
LL| | Foo(3),
LL| 0| "with a message"
LL| | );
LL| | }
LL| 1| assert_ne!(
LL| 1| if is_true {
LL| 1| Foo(0)
LL| | } else {
LL| 0| Foo(1)
LL| | },
LL| | Foo(5)
LL| | );
LL| 1| assert_ne!(
LL| 1| Foo(5),
LL| 1| if is_true {
LL| 1| Foo(0)
LL| | } else {
LL| 0| Foo(1)
LL| | }
LL| | );
LL| 1| assert_ne!(
LL| 1| if is_true {
LL| 1| assert_eq!(
LL| 1| Foo(3),
LL| 1| Foo(3)
LL| 1| );
LL| 1| Foo(0)
LL| | } else {
LL| 0| assert_ne!(
LL| 0| if is_true {
LL| 0| Foo(0)
LL| | } else {
LL| 0| Foo(1)
LL| | },
LL| | Foo(5)
LL| | );
LL| 0| Foo(1)
LL| | },
LL| | Foo(5),
LL| 0| "with a message"
LL| | );
LL| 1| assert_eq!(
LL| | Foo(1),
LL| | Foo(3),
LL| 1| "this assert should fail"
LL| | );
LL| 0| assert_eq!(
LL| | Foo(3),
LL| | Foo(3),
LL| 0| "this assert should not be reached"
LL| | );
LL| 0|}
LL| |
LL| |impl std::fmt::Debug for Foo {
LL| | fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
LL| 7| write!(f, "try and succeed")?;
^0
138| 7| Ok(())
139| 7| }
140| |}
141| |
142| |static mut DEBUG_LEVEL_ENABLED: bool = false;
143| |
144| |macro_rules! debug {
145| | ($($arg:tt)+) => (
146| | if unsafe { DEBUG_LEVEL_ENABLED } {
147| | println!($($arg)+);
148| | }
149| | );
150| |}
151| |
152| 1|fn test1() {
153| 1| debug!("debug is enabled");
LL| 7| Ok(())
LL| 7| }
LL| |}
LL| |
LL| |static mut DEBUG_LEVEL_ENABLED: bool = false;
LL| |
LL| |macro_rules! debug {
LL| | ($($arg:tt)+) => (
LL| | if unsafe { DEBUG_LEVEL_ENABLED } {
LL| | println!($($arg)+);
LL| | }
LL| | );
LL| |}
LL| |
LL| 1|fn test1() {
LL| 1| debug!("debug is enabled");
^0
154| 1| debug!("debug is enabled");
LL| 1| debug!("debug is enabled");
^0
155| 1| let _ = 0;
156| 1| debug!("debug is enabled");
LL| 1| let _ = 0;
LL| 1| debug!("debug is enabled");
^0
157| 1| unsafe {
158| 1| DEBUG_LEVEL_ENABLED = true;
159| 1| }
160| 1| debug!("debug is enabled");
161| 1|}
162| |
163| |macro_rules! call_debug {
164| | ($($arg:tt)+) => (
165| 1| fn call_print(s: &str) {
166| 1| print!("{}", s);
167| 1| }
168| |
169| | call_print("called from call_debug: ");
170| | debug!($($arg)+);
171| | );
172| |}
173| |
174| 1|fn test2() {
175| 1| call_debug!("debug is enabled");
176| 1|}
177| |
178| 1|fn main() {
179| 1| test1();
180| 1| test2();
181| 1| test3();
182| 1|}
LL| 1| unsafe {
LL| 1| DEBUG_LEVEL_ENABLED = true;
LL| 1| }
LL| 1| debug!("debug is enabled");
LL| 1|}
LL| |
LL| |macro_rules! call_debug {
LL| | ($($arg:tt)+) => (
LL| 1| fn call_print(s: &str) {
LL| 1| print!("{}", s);
LL| 1| }
LL| |
LL| | call_print("called from call_debug: ");
LL| | debug!($($arg)+);
LL| | );
LL| |}
LL| |
LL| 1|fn test2() {
LL| 1| call_debug!("debug is enabled");
LL| 1|}
LL| |
LL| 1|fn main() {
LL| 1| test1();
LL| 1| test2();
LL| 1| test3();
LL| 1|}

64
tests/run-coverage/issue-85461.coverage
View File

@ -1,36 +1,36 @@
$DIR/auxiliary/inline_always_with_dead_code.rs:
1| |// compile-flags: -Cinstrument-coverage -Ccodegen-units=4 -Copt-level=0
2| |
3| |#![allow(dead_code)]
4| |
5| |mod foo {
6| | #[inline(always)]
7| 2| pub fn called() { }
8| |
9| 0| fn uncalled() { }
10| |}
11| |
12| |pub mod bar {
13| 1| pub fn call_me() {
14| 1| super::foo::called();
15| 1| }
16| |}
17| |
18| |pub mod baz {
19| 1| pub fn call_me() {
20| 1| super::foo::called();
21| 1| }
22| |}
LL| |// compile-flags: -Cinstrument-coverage -Ccodegen-units=4 -Copt-level=0
LL| |
LL| |#![allow(dead_code)]
LL| |
LL| |mod foo {
LL| | #[inline(always)]
LL| 2| pub fn called() { }
LL| |
LL| 0| fn uncalled() { }
LL| |}
LL| |
LL| |pub mod bar {
LL| 1| pub fn call_me() {
LL| 1| super::foo::called();
LL| 1| }
LL| |}
LL| |
LL| |pub mod baz {
LL| 1| pub fn call_me() {
LL| 1| super::foo::called();
LL| 1| }
LL| |}
$DIR/issue-85461.rs:
1| |// Regression test for #85461: MSVC sometimes fail to link with dead code and #[inline(always)]
2| |// aux-build:inline_always_with_dead_code.rs
3| |extern crate inline_always_with_dead_code;
4| |
5| |use inline_always_with_dead_code::{bar, baz};
6| |
7| 1|fn main() {
8| 1| bar::call_me();
9| 1| baz::call_me();
10| 1|}
LL| |// Regression test for #85461: MSVC sometimes fail to link with dead code and #[inline(always)]
LL| |// aux-build:inline_always_with_dead_code.rs
LL| |extern crate inline_always_with_dead_code;
LL| |
LL| |use inline_always_with_dead_code::{bar, baz};
LL| |
LL| 1|fn main() {
LL| 1| bar::call_me();
LL| 1| baz::call_me();
LL| 1|}

56
tests/run-coverage/issue-93054.coverage
View File

@ -1,29 +1,29 @@
1| |// Regression test for #93054: Functions using uninhabited types often only have a single,
2| |// unreachable basic block which doesn't get instrumented. This should not cause llvm-cov to fail.
3| |// Since these kinds functions can't be invoked anyway, it's ok to not have coverage data for them.
4| |
5| |// compile-flags: --edition=2021
6| |
7| |enum Never { }
8| |
9| |impl Never {
10| | fn foo(self) {
11| | match self { }
12| | make().map(|never| match never { });
13| | }
14| |
15| | fn bar(&self) {
16| | match *self { }
17| | }
18| |}
19| |
20| 0|async fn foo2(never: Never) {
21| | match never { }
22| |}
23| |
24| 0|fn make() -> Option<Never> {
25| 0| None
26| 0|}
27| |
28| 1|fn main() { }
LL| |// Regression test for #93054: Functions using uninhabited types often only have a single,
LL| |// unreachable basic block which doesn't get instrumented. This should not cause llvm-cov to fail.
LL| |// Since these kinds functions can't be invoked anyway, it's ok to not have coverage data for them.
LL| |
LL| |// compile-flags: --edition=2021
LL| |
LL| |enum Never { }
LL| |
LL| |impl Never {
LL| | fn foo(self) {
LL| | match self { }
LL| | make().map(|never| match never { });
LL| | }
LL| |
LL| | fn bar(&self) {
LL| | match *self { }
LL| | }
LL| |}
LL| |
LL| 0|async fn foo2(never: Never) {
LL| | match never { }
LL| |}
LL| |
LL| 0|fn make() -> Option<Never> {
LL| 0| None
LL| 0|}
LL| |
LL| 1|fn main() { }

122
tests/run-coverage/lazy_boolean.coverage
View File

@ -1,64 +1,64 @@
1| |#![allow(unused_assignments, unused_variables)]
2| |
3| 1|fn main() {
4| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
5| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
6| 1| // dependent conditions.
7| 1| let is_true = std::env::args().len() == 1;
8| 1|
9| 1| let (mut a, mut b, mut c) = (0, 0, 0);
10| 1| if is_true {
11| 1| a = 1;
12| 1| b = 10;
13| 1| c = 100;
14| 1| }
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| 1|fn main() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1|
LL| 1| let (mut a, mut b, mut c) = (0, 0, 0);
LL| 1| if is_true {
LL| 1| a = 1;
LL| 1| b = 10;
LL| 1| c = 100;
LL| 1| }
^0
15| | let
16| 1| somebool
17| | =
18| 1| a < b
19| | ||
20| 0| b < c
21| | ;
22| | let
23| 1| somebool
24| | =
25| 1| b < a
26| | ||
27| 1| b < c
28| | ;
29| 1| let somebool = a < b && b < c;
30| 1| let somebool = b < a && b < c;
LL| | let
LL| 1| somebool
LL| | =
LL| 1| a < b
LL| | ||
LL| 0| b < c
LL| | ;
LL| | let
LL| 1| somebool
LL| | =
LL| 1| b < a
LL| | ||
LL| 1| b < c
LL| | ;
LL| 1| let somebool = a < b && b < c;
LL| 1| let somebool = b < a && b < c;
^0
31| |
32| | if
33| 1| !
34| 1| is_true
35| 0| {
36| 0| a = 2
37| 0| ;
38| 1| }
39| |
40| | if
41| 1| is_true
42| 1| {
43| 1| b = 30
44| 1| ;
45| 1| }
46| | else
47| 0| {
48| 0| c = 400
49| 0| ;
50| 0| }
51| |
52| 1| if !is_true {
53| 0| a = 2;
54| 1| }
55| |
56| 1| if is_true {
57| 1| b = 30;
58| 1| } else {
59| 0| c = 400;
60| 0| }
61| 1|}
LL| |
LL| | if
LL| 1| !
LL| 1| is_true
LL| 0| {
LL| 0| a = 2
LL| 0| ;
LL| 1| }
LL| |
LL| | if
LL| 1| is_true
LL| 1| {
LL| 1| b = 30
LL| 1| ;
LL| 1| }
LL| | else
LL| 0| {
LL| 0| c = 400
LL| 0| ;
LL| 0| }
LL| |
LL| 1| if !is_true {
LL| 0| a = 2;
LL| 1| }
LL| |
LL| 1| if is_true {
LL| 1| b = 30;
LL| 1| } else {
LL| 0| c = 400;
LL| 0| }
LL| 1|}

26
tests/run-coverage/loop_break_value.coverage
View File

@ -1,14 +1,14 @@
1| |#![allow(unused_assignments, unused_variables)]
2| |
3| 1|fn main() {
4| 1| let result
5| 1| =
6| 1| loop
7| 1| {
8| 1| break
9| 1| 10
10| 1| ;
11| 1| }
12| 1| ;
13| 1|}
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| 1|fn main() {
LL| 1| let result
LL| 1| =
LL| 1| loop
LL| 1| {
LL| 1| break
LL| 1| 10
LL| 1| ;
LL| 1| }
LL| 1| ;
LL| 1|}

122
tests/run-coverage/loops_branches.coverage
View File

@ -1,68 +1,68 @@
1| |#![allow(unused_assignments, unused_variables, while_true)]
2| |
3| |// This test confirms that (1) unexecuted infinite loops are handled correctly by the
4| |// InstrumentCoverage MIR pass; and (2) Counter Expressions that subtract from zero can be dropped.
5| |
6| |struct DebugTest;
7| |
8| |impl std::fmt::Debug for DebugTest {
9| 1| fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
10| 1| if true {
11| 1| if false {
12| 0| while true {
13| 0| }
14| 1| }
15| 1| write!(f, "cool")?;
LL| |#![allow(unused_assignments, unused_variables, while_true)]
LL| |
LL| |// This test confirms that (1) unexecuted infinite loops are handled correctly by the
LL| |// InstrumentCoverage MIR pass; and (2) Counter Expressions that subtract from zero can be dropped.
LL| |
LL| |struct DebugTest;
LL| |
LL| |impl std::fmt::Debug for DebugTest {
LL| 1| fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
LL| 1| if true {
LL| 1| if false {
LL| 0| while true {
LL| 0| }
LL| 1| }
LL| 1| write!(f, "cool")?;
^0
16| 0| } else {
17| 0| }
18| |
19| 11| for i in 0..10 {
LL| 0| } else {
LL| 0| }
LL| |
LL| 11| for i in 0..10 {
^10
20| 10| if true {
21| 10| if false {
22| 0| while true {}
23| 10| }
24| 10| write!(f, "cool")?;
LL| 10| if true {
LL| 10| if false {
LL| 0| while true {}
LL| 10| }
LL| 10| write!(f, "cool")?;
^0
25| 0| } else {
26| 0| }
27| | }
28| 1| Ok(())
29| 1| }
30| |}
31| |
32| |struct DisplayTest;
33| |
34| |impl std::fmt::Display for DisplayTest {
35| 1| fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
36| 1| if false {
37| 0| } else {
38| 1| if false {
39| 0| while true {}
40| 1| }
41| 1| write!(f, "cool")?;
LL| 0| } else {
LL| 0| }
LL| | }
LL| 1| Ok(())
LL| 1| }
LL| |}
LL| |
LL| |struct DisplayTest;
LL| |
LL| |impl std::fmt::Display for DisplayTest {
LL| 1| fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
LL| 1| if false {
LL| 0| } else {
LL| 1| if false {
LL| 0| while true {}
LL| 1| }
LL| 1| write!(f, "cool")?;
^0
42| | }
43| 11| for i in 0..10 {
LL| | }
LL| 11| for i in 0..10 {
^10
44| 10| if false {
45| 0| } else {
46| 10| if false {
47| 0| while true {}
48| 10| }
49| 10| write!(f, "cool")?;
LL| 10| if false {
LL| 0| } else {
LL| 10| if false {
LL| 0| while true {}
LL| 10| }
LL| 10| write!(f, "cool")?;
^0
50| | }
51| | }
52| 1| Ok(())
53| 1| }
54| |}
55| |
56| 1|fn main() {
57| 1| let debug_test = DebugTest;
58| 1| println!("{:?}", debug_test);
59| 1| let display_test = DisplayTest;
60| 1| println!("{}", display_test);
61| 1|}
LL| | }
LL| | }
LL| 1| Ok(())
LL| 1| }
LL| |}
LL| |
LL| 1|fn main() {
LL| 1| let debug_test = DebugTest;
LL| 1| println!("{:?}", debug_test);
LL| 1| let display_test = DisplayTest;
LL| 1| println!("{}", display_test);
LL| 1|}

90
tests/run-coverage/match_or_pattern.coverage
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@ -1,50 +1,50 @@
1| |#![feature(or_patterns)]
2| |
3| 1|fn main() {
4| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
5| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
6| 1| // dependent conditions.
7| 1| let is_true = std::env::args().len() == 1;
8| 1|
9| 1| let mut a: u8 = 0;
10| 1| let mut b: u8 = 0;
11| 1| if is_true {
12| 1| a = 2;
13| 1| b = 0;
14| 1| }
LL| |#![feature(or_patterns)]
LL| |
LL| 1|fn main() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1|
LL| 1| let mut a: u8 = 0;
LL| 1| let mut b: u8 = 0;
LL| 1| if is_true {
LL| 1| a = 2;
LL| 1| b = 0;
LL| 1| }
^0
15| 1| match (a, b) {
16| | // Or patterns generate MIR `SwitchInt` with multiple targets to the same `BasicBlock`.
17| | // This test confirms a fix for Issue #79569.
18| 0| (0 | 1, 2 | 3) => {}
19| 1| _ => {}
20| | }
21| 1| if is_true {
22| 1| a = 0;
23| 1| b = 0;
24| 1| }
LL| 1| match (a, b) {
LL| | // Or patterns generate MIR `SwitchInt` with multiple targets to the same `BasicBlock`.
LL| | // This test confirms a fix for Issue #79569.
LL| 0| (0 | 1, 2 | 3) => {}
LL| 1| _ => {}
LL| | }
LL| 1| if is_true {
LL| 1| a = 0;
LL| 1| b = 0;
LL| 1| }
^0
25| 1| match (a, b) {
26| 0| (0 | 1, 2 | 3) => {}
27| 1| _ => {}
28| | }
29| 1| if is_true {
30| 1| a = 2;
31| 1| b = 2;
32| 1| }
LL| 1| match (a, b) {
LL| 0| (0 | 1, 2 | 3) => {}
LL| 1| _ => {}
LL| | }
LL| 1| if is_true {
LL| 1| a = 2;
LL| 1| b = 2;
LL| 1| }
^0
33| 1| match (a, b) {
34| 0| (0 | 1, 2 | 3) => {}
35| 1| _ => {}
36| | }
37| 1| if is_true {
38| 1| a = 0;
39| 1| b = 2;
40| 1| }
LL| 1| match (a, b) {
LL| 0| (0 | 1, 2 | 3) => {}
LL| 1| _ => {}
LL| | }
LL| 1| if is_true {
LL| 1| a = 0;
LL| 1| b = 2;
LL| 1| }
^0
41| 1| match (a, b) {
42| 1| (0 | 1, 2 | 3) => {}
43| 0| _ => {}
44| | }
45| 1|}
LL| 1| match (a, b) {
LL| 1| (0 | 1, 2 | 3) => {}
LL| 0| _ => {}
LL| | }
LL| 1|}

50
tests/run-coverage/nested_loops.coverage
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@ -1,26 +1,26 @@
1| 1|fn main() {
2| 1| let is_true = std::env::args().len() == 1;
3| 1| let mut countdown = 10;
4| |
5| 1| 'outer: while countdown > 0 {
6| 1| let mut a = 100;
7| 1| let mut b = 100;
8| 3| for _ in 0..50 {
9| 3| if a < 30 {
10| 0| break;
11| 3| }
12| 3| a -= 5;
13| 3| b -= 5;
14| 3| if b < 90 {
15| 1| a -= 10;
16| 1| if is_true {
17| 1| break 'outer;
18| 0| } else {
19| 0| a -= 2;
20| 0| }
21| 2| }
22| | }
23| 0| countdown -= 1;
24| | }
25| 1|}
LL| 1|fn main() {
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1| let mut countdown = 10;
LL| |
LL| 1| 'outer: while countdown > 0 {
LL| 1| let mut a = 100;
LL| 1| let mut b = 100;
LL| 3| for _ in 0..50 {
LL| 3| if a < 30 {
LL| 0| break;
LL| 3| }
LL| 3| a -= 5;
LL| 3| b -= 5;
LL| 3| if b < 90 {
LL| 1| a -= 10;
LL| 1| if is_true {
LL| 1| break 'outer;
LL| 0| } else {
LL| 0| a -= 2;
LL| 0| }
LL| 2| }
LL| | }
LL| 0| countdown -= 1;
LL| | }
LL| 1|}

172
tests/run-coverage/no_cov_crate.coverage
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@ -1,87 +1,87 @@
1| |// Enables `no_coverage` on the entire crate
2| |#![feature(no_coverage)]
3| |
4| |#[no_coverage]
5| |fn do_not_add_coverage_1() {
6| | println!("called but not covered");
7| |}
8| |
9| |fn do_not_add_coverage_2() {
10| | #![no_coverage]
11| | println!("called but not covered");
12| |}
13| |
14| |#[no_coverage]
15| |fn do_not_add_coverage_not_called() {
16| | println!("not called and not covered");
17| |}
18| |
19| 1|fn add_coverage_1() {
20| 1| println!("called and covered");
21| 1|}
22| |
23| 1|fn add_coverage_2() {
24| 1| println!("called and covered");
25| 1|}
26| |
27| 0|fn add_coverage_not_called() {
28| 0| println!("not called but covered");
29| 0|}
30| |
31| |// FIXME: These test-cases illustrate confusing results of nested functions.
32| |// See https://github.com/rust-lang/rust/issues/93319
33| |mod nested_fns {
34| | #[no_coverage]
35| | pub fn outer_not_covered(is_true: bool) {
36| 1| fn inner(is_true: bool) {
37| 1| if is_true {
38| 1| println!("called and covered");
39| 1| } else {
40| 0| println!("absolutely not covered");
41| 0| }
42| 1| }
43| | println!("called but not covered");
44| | inner(is_true);
45| | }
46| |
47| 1| pub fn outer(is_true: bool) {
48| 1| println!("called and covered");
49| 1| inner_not_covered(is_true);
50| 1|
51| 1| #[no_coverage]
52| 1| fn inner_not_covered(is_true: bool) {
53| 1| if is_true {
54| 1| println!("called but not covered");
55| 1| } else {
56| 1| println!("absolutely not covered");
57| 1| }
58| 1| }
59| 1| }
60| |
61| 1| pub fn outer_both_covered(is_true: bool) {
62| 1| println!("called and covered");
63| 1| inner(is_true);
64| 1|
65| 1| fn inner(is_true: bool) {
66| 1| if is_true {
67| 1| println!("called and covered");
68| 1| } else {
69| 0| println!("absolutely not covered");
70| 0| }
71| 1| }
72| 1| }
73| |}
74| |
75| 1|fn main() {
76| 1| let is_true = std::env::args().len() == 1;
77| 1|
78| 1| do_not_add_coverage_1();
79| 1| do_not_add_coverage_2();
80| 1| add_coverage_1();
81| 1| add_coverage_2();
82| 1|
83| 1| nested_fns::outer_not_covered(is_true);
84| 1| nested_fns::outer(is_true);
85| 1| nested_fns::outer_both_covered(is_true);
86| 1|}
LL| |// Enables `no_coverage` on the entire crate
LL| |#![feature(no_coverage)]
LL| |
LL| |#[no_coverage]
LL| |fn do_not_add_coverage_1() {
LL| | println!("called but not covered");
LL| |}
LL| |
LL| |fn do_not_add_coverage_2() {
LL| | #![no_coverage]
LL| | println!("called but not covered");
LL| |}
LL| |
LL| |#[no_coverage]
LL| |fn do_not_add_coverage_not_called() {
LL| | println!("not called and not covered");
LL| |}
LL| |
LL| 1|fn add_coverage_1() {
LL| 1| println!("called and covered");
LL| 1|}
LL| |
LL| 1|fn add_coverage_2() {
LL| 1| println!("called and covered");
LL| 1|}
LL| |
LL| 0|fn add_coverage_not_called() {
LL| 0| println!("not called but covered");
LL| 0|}
LL| |
LL| |// FIXME: These test-cases illustrate confusing results of nested functions.
LL| |// See https://github.com/rust-lang/rust/issues/93319
LL| |mod nested_fns {
LL| | #[no_coverage]
LL| | pub fn outer_not_covered(is_true: bool) {
LL| 1| fn inner(is_true: bool) {
LL| 1| if is_true {
LL| 1| println!("called and covered");
LL| 1| } else {
LL| 0| println!("absolutely not covered");
LL| 0| }
LL| 1| }
LL| | println!("called but not covered");
LL| | inner(is_true);
LL| | }
LL| |
LL| 1| pub fn outer(is_true: bool) {
LL| 1| println!("called and covered");
LL| 1| inner_not_covered(is_true);
LL| 1|
LL| 1| #[no_coverage]
LL| 1| fn inner_not_covered(is_true: bool) {
LL| 1| if is_true {
LL| 1| println!("called but not covered");
LL| 1| } else {
LL| 1| println!("absolutely not covered");
LL| 1| }
LL| 1| }
LL| 1| }
LL| |
LL| 1| pub fn outer_both_covered(is_true: bool) {
LL| 1| println!("called and covered");
LL| 1| inner(is_true);
LL| 1|
LL| 1| fn inner(is_true: bool) {
LL| 1| if is_true {
LL| 1| println!("called and covered");
LL| 1| } else {
LL| 0| println!("absolutely not covered");
LL| 0| }
LL| 1| }
LL| 1| }
LL| |}
LL| |
LL| 1|fn main() {
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1|
LL| 1| do_not_add_coverage_1();
LL| 1| do_not_add_coverage_2();
LL| 1| add_coverage_1();
LL| 1| add_coverage_2();
LL| 1|
LL| 1| nested_fns::outer_not_covered(is_true);
LL| 1| nested_fns::outer(is_true);
LL| 1| nested_fns::outer_both_covered(is_true);
LL| 1|}

126
tests/run-coverage/overflow.coverage
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@ -1,64 +1,64 @@
1| |#![allow(unused_assignments)]
2| |// failure-status: 101
3| |
4| 4|fn might_overflow(to_add: u32) -> u32 {
5| 4| if to_add > 5 {
6| 1| println!("this will probably overflow");
7| 3| }
8| 4| let add_to = u32::MAX - 5;
9| 4| println!("does {} + {} overflow?", add_to, to_add);
10| 4| let result = to_add + add_to;
11| 4| println!("continuing after overflow check");
12| 4| result
13| 4|}
14| |
15| 1|fn main() -> Result<(),u8> {
16| 1| let mut countdown = 10;
17| 11| while countdown > 0 {
18| 11| if countdown == 1 {
19| 1| let result = might_overflow(10);
20| 1| println!("Result: {}", result);
21| 10| } else if countdown < 5 {
22| 3| let result = might_overflow(1);
23| 3| println!("Result: {}", result);
24| 6| }
25| 10| countdown -= 1;
26| | }
27| 0| Ok(())
28| 0|}
29| |
30| |// Notes:
31| |// 1. Compare this program and its coverage results to those of the very similar test `assert.rs`,
32| |// and similar tests `panic_unwind.rs`, abort.rs` and `try_error_result.rs`.
33| |// 2. This test confirms the coverage generated when a program passes or fails a
34| |// compiler-generated `TerminatorKind::Assert` (based on an overflow check, in this case).
35| |// 3. Similar to how the coverage instrumentation handles `TerminatorKind::Call`,
36| |// compiler-generated assertion failures are assumed to be a symptom of a program bug, not
37| |// expected behavior. To simplify the coverage graphs and keep instrumented programs as
38| |// small and fast as possible, `Assert` terminators are assumed to always succeed, and
39| |// therefore are considered "non-branching" terminators. So, an `Assert` terminator does not
40| |// get its own coverage counter.
41| |// 4. After an unhandled panic or failed Assert, coverage results may not always be intuitive.
42| |// In this test, the final count for the statements after the `if` block in `might_overflow()`
43| |// is 4, even though the lines after `to_add + add_to` were executed only 3 times. Depending
44| |// on the MIR graph and the structure of the code, this count could have been 3 (which might
45| |// have been valid for the overflowed add `+`, but should have been 4 for the lines before
46| |// the overflow. The reason for this potential uncertainty is, a `CounterKind` is incremented
47| |// via StatementKind::Counter at the end of the block, but (as in the case in this test),
48| |// a CounterKind::Expression is always evaluated. In this case, the expression was based on
49| |// a `Counter` incremented as part of the evaluation of the `if` expression, which was
50| |// executed, and counted, 4 times, before reaching the overflow add.
51| |
52| |// If the program did not overflow, the coverage for `might_overflow()` would look like this:
53| |//
54| |// 4| |fn might_overflow(to_add: u32) -> u32 {
55| |// 5| 4| if to_add > 5 {
56| |// 6| 0| println!("this will probably overflow");
57| |// 7| 4| }
58| |// 8| 4| let add_to = u32::MAX - 5;
59| |// 9| 4| println!("does {} + {} overflow?", add_to, to_add);
60| |// 10| 4| let result = to_add + add_to;
61| |// 11| 4| println!("continuing after overflow check");
62| |// 12| 4| result
63| |// 13| 4|}
LL| |#![allow(unused_assignments)]
LL| |// failure-status: 101
LL| |
LL| 4|fn might_overflow(to_add: u32) -> u32 {
LL| 4| if to_add > 5 {
LL| 1| println!("this will probably overflow");
LL| 3| }
LL| 4| let add_to = u32::MAX - 5;
LL| 4| println!("does {} + {} overflow?", add_to, to_add);
LL| 4| let result = to_add + add_to;
LL| 4| println!("continuing after overflow check");
LL| 4| result
LL| 4|}
LL| |
LL| 1|fn main() -> Result<(),u8> {
LL| 1| let mut countdown = 10;
LL| 11| while countdown > 0 {
LL| 11| if countdown == 1 {
LL| 1| let result = might_overflow(10);
LL| 1| println!("Result: {}", result);
LL| 10| } else if countdown < 5 {
LL| 3| let result = might_overflow(1);
LL| 3| println!("Result: {}", result);
LL| 6| }
LL| 10| countdown -= 1;
LL| | }
LL| 0| Ok(())
LL| 0|}
LL| |
LL| |// Notes:
LL| |// 1. Compare this program and its coverage results to those of the very similar test `assert.rs`,
LL| |// and similar tests `panic_unwind.rs`, abort.rs` and `try_error_result.rs`.
LL| |// 2. This test confirms the coverage generated when a program passes or fails a
LL| |// compiler-generated `TerminatorKind::Assert` (based on an overflow check, in this case).
LL| |// 3. Similar to how the coverage instrumentation handles `TerminatorKind::Call`,
LL| |// compiler-generated assertion failures are assumed to be a symptom of a program bug, not
LL| |// expected behavior. To simplify the coverage graphs and keep instrumented programs as
LL| |// small and fast as possible, `Assert` terminators are assumed to always succeed, and
LL| |// therefore are considered "non-branching" terminators. So, an `Assert` terminator does not
LL| |// get its own coverage counter.
LL| |// 4. After an unhandled panic or failed Assert, coverage results may not always be intuitive.
LL| |// In this test, the final count for the statements after the `if` block in `might_overflow()`
LL| |// is 4, even though the lines after `to_add + add_to` were executed only 3 times. Depending
LL| |// on the MIR graph and the structure of the code, this count could have been 3 (which might
LL| |// have been valid for the overflowed add `+`, but should have been 4 for the lines before
LL| |// the overflow. The reason for this potential uncertainty is, a `CounterKind` is incremented
LL| |// via StatementKind::Counter at the end of the block, but (as in the case in this test),
LL| |// a CounterKind::Expression is always evaluated. In this case, the expression was based on
LL| |// a `Counter` incremented as part of the evaluation of the `if` expression, which was
LL| |// executed, and counted, 4 times, before reaching the overflow add.
LL| |
LL| |// If the program did not overflow, the coverage for `might_overflow()` would look like this:
LL| |//
LL| |// 4| |fn might_overflow(to_add: u32) -> u32 {
LL| |// 5| 4| if to_add > 5 {
LL| |// 6| 0| println!("this will probably overflow");
LL| |// 7| 4| }
LL| |// 8| 4| let add_to = u32::MAX - 5;
LL| |// 9| 4| println!("does {} + {} overflow?", add_to, to_add);
LL| |// 10| 4| let result = to_add + add_to;
LL| |// 11| 4| println!("continuing after overflow check");
LL| |// 12| 4| result
LL| |// 13| 4|}

62
tests/run-coverage/panic_unwind.coverage
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@ -1,32 +1,32 @@
1| |#![allow(unused_assignments)]
2| |// failure-status: 101
3| |
4| 4|fn might_panic(should_panic: bool) {
5| 4| if should_panic {
6| 1| println!("panicking...");
7| 1| panic!("panics");
8| 3| } else {
9| 3| println!("Don't Panic");
10| 3| }
11| 3|}
12| |
13| 1|fn main() -> Result<(), u8> {
14| 1| let mut countdown = 10;
15| 11| while countdown > 0 {
16| 11| if countdown == 1 {
17| 1| might_panic(true);
18| 10| } else if countdown < 5 {
19| 3| might_panic(false);
20| 6| }
21| 10| countdown -= 1;
22| | }
23| 0| Ok(())
24| 0|}
25| |
26| |// Notes:
27| |// 1. Compare this program and its coverage results to those of the similar tests `abort.rs` and
28| |// `try_error_result.rs`.
29| |// 2. Since the `panic_unwind.rs` test is allowed to unwind, it is also allowed to execute the
30| |// normal program exit cleanup, including writing out the current values of the coverage
31| |// counters.
LL| |#![allow(unused_assignments)]
LL| |// failure-status: 101
LL| |
LL| 4|fn might_panic(should_panic: bool) {
LL| 4| if should_panic {
LL| 1| println!("panicking...");
LL| 1| panic!("panics");
LL| 3| } else {
LL| 3| println!("Don't Panic");
LL| 3| }
LL| 3|}
LL| |
LL| 1|fn main() -> Result<(), u8> {
LL| 1| let mut countdown = 10;
LL| 11| while countdown > 0 {
LL| 11| if countdown == 1 {
LL| 1| might_panic(true);
LL| 10| } else if countdown < 5 {
LL| 3| might_panic(false);
LL| 6| }
LL| 10| countdown -= 1;
LL| | }
LL| 0| Ok(())
LL| 0|}
LL| |
LL| |// Notes:
LL| |// 1. Compare this program and its coverage results to those of the similar tests `abort.rs` and
LL| |// `try_error_result.rs`.
LL| |// 2. Since the `panic_unwind.rs` test is allowed to unwind, it is also allowed to execute the
LL| |// normal program exit cleanup, including writing out the current values of the coverage
LL| |// counters.

92
tests/run-coverage/partial_eq.coverage
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@ -1,48 +1,48 @@
1| |// This test confirms an earlier problem was resolved, supporting the MIR graph generated by the
2| |// structure of this test.
3| |
4| 2|#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
LL| |// This test confirms an earlier problem was resolved, supporting the MIR graph generated by the
LL| |// structure of this test.
LL| |
LL| 2|#[derive(Clone, Debug, PartialEq, Eq, PartialOrd, Ord)]
^0 ^0 ^0 ^1 ^1 ^0^0
5| |pub struct Version {
6| | major: usize,
7| | minor: usize,
8| | patch: usize,
9| |}
10| |
11| |impl Version {
12| 2| pub fn new(major: usize, minor: usize, patch: usize) -> Self {
13| 2| Self {
14| 2| major,
15| 2| minor,
16| 2| patch,
17| 2| }
18| 2| }
19| |}
20| |
21| 1|fn main() {
22| 1| let version_3_2_1 = Version::new(3, 2, 1);
23| 1| let version_3_3_0 = Version::new(3, 3, 0);
24| 1|
25| 1| println!("{:?} < {:?} = {}", version_3_2_1, version_3_3_0, version_3_2_1 < version_3_3_0);
26| 1|}
27| |
28| |/*
29| |
30| |This test verifies a bug was fixed that otherwise generated this error:
31| |
32| |thread 'rustc' panicked at 'No counters provided the source_hash for function:
33| | Instance {
34| | def: Item(WithOptConstParam {
35| | did: DefId(0:101 ~ autocfg[c44a]::version::{impl#2}::partial_cmp),
36| | const_param_did: None
37| | }),
38| | args: []
39| | }'
40| |The `PartialOrd` derived by `Version` happened to generate a MIR that generated coverage
41| |without a code region associated with any `Counter`. Code regions were associated with at least
42| |one expression, which is allowed, but the `function_source_hash` was only passed to the codegen
43| |(coverage mapgen) phase from a `Counter`s code region. A new method was added to pass the
44| |`function_source_hash` without a code region, if necessary.
45| |
46| |*/
LL| |pub struct Version {
LL| | major: usize,
LL| | minor: usize,
LL| | patch: usize,
LL| |}
LL| |
LL| |impl Version {
LL| 2| pub fn new(major: usize, minor: usize, patch: usize) -> Self {
LL| 2| Self {
LL| 2| major,
LL| 2| minor,
LL| 2| patch,
LL| 2| }
LL| 2| }
LL| |}
LL| |
LL| 1|fn main() {
LL| 1| let version_3_2_1 = Version::new(3, 2, 1);
LL| 1| let version_3_3_0 = Version::new(3, 3, 0);
LL| 1|
LL| 1| println!("{:?} < {:?} = {}", version_3_2_1, version_3_3_0, version_3_2_1 < version_3_3_0);
LL| 1|}
LL| |
LL| |/*
LL| |
LL| |This test verifies a bug was fixed that otherwise generated this error:
LL| |
LL| |thread 'rustc' panicked at 'No counters provided the source_hash for function:
LL| | Instance {
LL| | def: Item(WithOptConstParam {
LL| | did: DefId(0:101 ~ autocfg[c44a]::version::{impl#2}::partial_cmp),
LL| | const_param_did: None
LL| | }),
LL| | args: []
LL| | }'
LL| |The `PartialOrd` derived by `Version` happened to generate a MIR that generated coverage
LL| |without a code region associated with any `Counter`. Code regions were associated with at least
LL| |one expression, which is allowed, but the `function_source_hash` was only passed to the codegen
LL| |(coverage mapgen) phase from a `Counter`s code region. A new method was added to pass the
LL| |`function_source_hash` without a code region, if necessary.
LL| |
LL| |*/

70
tests/run-coverage/simple_loop.coverage
View File

@ -1,37 +1,37 @@
1| |#![allow(unused_assignments)]
2| |
3| 1|fn main() {
4| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
5| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
6| 1| // dependent conditions.
7| 1| let is_true = std::env::args().len() == 1;
8| 1|
9| 1| let mut countdown = 0;
10| 1|
11| 1| if
12| 1| is_true
13| 1| {
14| 1| countdown
15| 1| =
16| 1| 10
17| 1| ;
18| 1| }
LL| |#![allow(unused_assignments)]
LL| |
LL| 1|fn main() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1|
LL| 1| let mut countdown = 0;
LL| 1|
LL| 1| if
LL| 1| is_true
LL| 1| {
LL| 1| countdown
LL| 1| =
LL| 1| 10
LL| 1| ;
LL| 1| }
^0
19| |
20| | loop
21| | {
22| | if
23| 11| countdown
24| 11| ==
25| 11| 0
26| | {
27| 1| break
28| | ;
29| 10| }
30| 10| countdown
31| 10| -=
32| 10| 1
33| | ;
34| | }
35| 1|}
LL| |
LL| | loop
LL| | {
LL| | if
LL| 11| countdown
LL| 11| ==
LL| 11| 0
LL| | {
LL| 1| break
LL| | ;
LL| 10| }
LL| 10| countdown
LL| 10| -=
LL| 10| 1
LL| | ;
LL| | }
LL| 1|}

86
tests/run-coverage/simple_match.coverage
View File

@ -1,45 +1,45 @@
1| |#![allow(unused_assignments, unused_variables)]
2| |
3| 1|fn main() {
4| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
5| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
6| 1| // dependent conditions.
7| 1| let is_true = std::env::args().len() == 1;
8| 1|
9| 1| let mut countdown = 1;
10| 1| if is_true {
11| 1| countdown = 0;
12| 1| }
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| 1|fn main() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1|
LL| 1| let mut countdown = 1;
LL| 1| if is_true {
LL| 1| countdown = 0;
LL| 1| }
^0
13| |
14| | for
15| | _
16| | in
17| 3| 0..2
18| | {
19| | let z
20| | ;
21| | match
22| 2| countdown
23| | {
24| 1| x
25| | if
26| 2| x
27| 2| <
28| 2| 1
29| | =>
30| 1| {
31| 1| z = countdown
32| 1| ;
33| 1| let y = countdown
34| 1| ;
35| 1| countdown = 10
36| 1| ;
37| 1| }
38| | _
39| | =>
40| 1| {}
41| | }
42| | }
43| 1|}
LL| |
LL| | for
LL| | _
LL| | in
LL| 3| 0..2
LL| | {
LL| | let z
LL| | ;
LL| | match
LL| 2| countdown
LL| | {
LL| 1| x
LL| | if
LL| 2| x
LL| 2| <
LL| 2| 1
LL| | =>
LL| 1| {
LL| 1| z = countdown
LL| 1| ;
LL| 1| let y = countdown
LL| 1| ;
LL| 1| countdown = 10
LL| 1| ;
LL| 1| }
LL| | _
LL| | =>
LL| 1| {}
LL| | }
LL| | }
LL| 1|}

76
tests/run-coverage/sort_groups.coverage
View File

@ -1,49 +1,49 @@
1| |// compile-flags: --edition=2021
2| |
3| |// Demonstrate that `sort_subviews.py` can sort instantiation groups into a
4| |// predictable order, while preserving their heterogeneous contents.
5| |
6| 1|fn main() {
7| 1| let cond = std::env::args().len() > 1;
8| 1| generic_fn::<()>(cond);
9| 1| generic_fn::<&'static str>(!cond);
10| 1| if false {
11| 0| generic_fn::<char>(cond);
12| 1| }
13| 1| generic_fn::<i32>(cond);
14| 1| other_fn();
15| 1|}
16| |
17| 3|fn generic_fn<T>(cond: bool) {
18| 3| if cond {
19| 1| println!("{}", std::any::type_name::<T>());
20| 2| }
21| 3|}
LL| |// compile-flags: --edition=2021
LL| |
LL| |// Demonstrate that `sort_subviews.py` can sort instantiation groups into a
LL| |// predictable order, while preserving their heterogeneous contents.
LL| |
LL| 1|fn main() {
LL| 1| let cond = std::env::args().len() > 1;
LL| 1| generic_fn::<()>(cond);
LL| 1| generic_fn::<&'static str>(!cond);
LL| 1| if false {
LL| 0| generic_fn::<char>(cond);
LL| 1| }
LL| 1| generic_fn::<i32>(cond);
LL| 1| other_fn();
LL| 1|}
LL| |
LL| 3|fn generic_fn<T>(cond: bool) {
LL| 3| if cond {
LL| 1| println!("{}", std::any::type_name::<T>());
LL| 2| }
LL| 3|}
------------------
| Unexecuted instantiation: sort_groups::generic_fn::<char>
------------------
| sort_groups::generic_fn::<&str>:
| 17| 1|fn generic_fn<T>(cond: bool) {
| 18| 1| if cond {
| 19| 1| println!("{}", std::any::type_name::<T>());
| 20| 1| }
| LL| 1|fn generic_fn<T>(cond: bool) {
| LL| 1| if cond {
| LL| 1| println!("{}", std::any::type_name::<T>());
| LL| 1| }
| ^0
| 21| 1|}
| LL| 1|}
------------------
| sort_groups::generic_fn::<()>:
| 17| 1|fn generic_fn<T>(cond: bool) {
| 18| 1| if cond {
| 19| 0| println!("{}", std::any::type_name::<T>());
| 20| 1| }
| 21| 1|}
| LL| 1|fn generic_fn<T>(cond: bool) {
| LL| 1| if cond {
| LL| 0| println!("{}", std::any::type_name::<T>());
| LL| 1| }
| LL| 1|}
------------------
| sort_groups::generic_fn::<i32>:
| 17| 1|fn generic_fn<T>(cond: bool) {
| 18| 1| if cond {
| 19| 0| println!("{}", std::any::type_name::<T>());
| 20| 1| }
| 21| 1|}
| LL| 1|fn generic_fn<T>(cond: bool) {
| LL| 1| if cond {
| LL| 0| println!("{}", std::any::type_name::<T>());
| LL| 1| }
| LL| 1|}
------------------
22| |
23| 1|fn other_fn() {}
LL| |
LL| 1|fn other_fn() {}

20
tests/run-coverage/test_harness.coverage
View File

@ -1,11 +1,11 @@
1| |// Verify that the entry point injected by the test harness doesn't cause
2| |// weird artifacts in the coverage report (e.g. issue #10749).
3| |
4| |// compile-flags: --test
5| |
6| |#[allow(dead_code)]
7| 0|fn unused() {}
8| |
9| 1|#[test]
10| 1|fn my_test() {}
LL| |// Verify that the entry point injected by the test harness doesn't cause
LL| |// weird artifacts in the coverage report (e.g. issue #10749).
LL| |
LL| |// compile-flags: --test
LL| |
LL| |#[allow(dead_code)]
LL| 0|fn unused() {}
LL| |
LL| 1|#[test]
LL| 1|fn my_test() {}

10
tests/run-coverage/tight_inf_loop.coverage
View File

@ -1,6 +1,6 @@
1| 1|fn main() {
2| 1| if false {
3| 0| loop {}
4| 1| }
5| 1|}
LL| 1|fn main() {
LL| 1| if false {
LL| 0| loop {}
LL| 1| }
LL| 1|}

236
tests/run-coverage/try_error_result.coverage
View File

@ -1,125 +1,125 @@
1| |#![allow(unused_assignments)]
2| |// failure-status: 1
3| |
4| 6|fn call(return_error: bool) -> Result<(),()> {
5| 6| if return_error {
6| 1| Err(())
7| | } else {
8| 5| Ok(())
9| | }
10| 6|}
11| |
12| 1|fn test1() -> Result<(),()> {
13| 1| let mut
14| 1| countdown = 10
15| | ;
16| | for
17| | _
18| | in
19| 6| 0..10
20| | {
21| 6| countdown
22| 6| -= 1
23| 6| ;
24| 6| if
25| 6| countdown < 5
26| | {
27| 1| call(/*return_error=*/ true)?;
28| 0| call(/*return_error=*/ false)?;
29| | }
30| | else
31| | {
32| 5| call(/*return_error=*/ false)?;
LL| |#![allow(unused_assignments)]
LL| |// failure-status: 1
LL| |
LL| 6|fn call(return_error: bool) -> Result<(),()> {
LL| 6| if return_error {
LL| 1| Err(())
LL| | } else {
LL| 5| Ok(())
LL| | }
LL| 6|}
LL| |
LL| 1|fn test1() -> Result<(),()> {
LL| 1| let mut
LL| 1| countdown = 10
LL| | ;
LL| | for
LL| | _
LL| | in
LL| 6| 0..10
LL| | {
LL| 6| countdown
LL| 6| -= 1
LL| 6| ;
LL| 6| if
LL| 6| countdown < 5
LL| | {
LL| 1| call(/*return_error=*/ true)?;
LL| 0| call(/*return_error=*/ false)?;
LL| | }
LL| | else
LL| | {
LL| 5| call(/*return_error=*/ false)?;
^0
33| | }
34| | }
35| 0| Ok(())
36| 1|}
37| |
38| |struct Thing1;
39| |impl Thing1 {
40| 18| fn get_thing_2(&self, return_error: bool) -> Result<Thing2,()> {
41| 18| if return_error {
42| 1| Err(())
43| | } else {
44| 17| Ok(Thing2{})
45| | }
46| 18| }
47| |}
48| |
49| |struct Thing2;
50| |impl Thing2 {
51| 17| fn call(&self, return_error: bool) -> Result<u32,()> {
52| 17| if return_error {
53| 2| Err(())
54| | } else {
55| 15| Ok(57)
56| | }
57| 17| }
58| |}
59| |
60| 1|fn test2() -> Result<(),()> {
61| 1| let thing1 = Thing1{};
62| 1| let mut
63| 1| countdown = 10
64| | ;
65| | for
66| | _
67| | in
68| 6| 0..10
69| | {
70| 6| countdown
71| 6| -= 1
72| 6| ;
73| 6| if
74| 6| countdown < 5
75| | {
76| 1| thing1.get_thing_2(/*err=*/ false)?.call(/*err=*/ true).expect_err("call should fail");
LL| | }
LL| | }
LL| 0| Ok(())
LL| 1|}
LL| |
LL| |struct Thing1;
LL| |impl Thing1 {
LL| 18| fn get_thing_2(&self, return_error: bool) -> Result<Thing2,()> {
LL| 18| if return_error {
LL| 1| Err(())
LL| | } else {
LL| 17| Ok(Thing2{})
LL| | }
LL| 18| }
LL| |}
LL| |
LL| |struct Thing2;
LL| |impl Thing2 {
LL| 17| fn call(&self, return_error: bool) -> Result<u32,()> {
LL| 17| if return_error {
LL| 2| Err(())
LL| | } else {
LL| 15| Ok(57)
LL| | }
LL| 17| }
LL| |}
LL| |
LL| 1|fn test2() -> Result<(),()> {
LL| 1| let thing1 = Thing1{};
LL| 1| let mut
LL| 1| countdown = 10
LL| | ;
LL| | for
LL| | _
LL| | in
LL| 6| 0..10
LL| | {
LL| 6| countdown
LL| 6| -= 1
LL| 6| ;
LL| 6| if
LL| 6| countdown < 5
LL| | {
LL| 1| thing1.get_thing_2(/*err=*/ false)?.call(/*err=*/ true).expect_err("call should fail");
^0
77| 1| thing1
78| 1| .
79| 1| get_thing_2(/*return_error=*/ false)
80| 0| ?
81| | .
82| 1| call(/*return_error=*/ true)
83| 1| .
84| 1| expect_err(
85| 1| "call should fail"
86| 1| );
87| 1| let val = thing1.get_thing_2(/*return_error=*/ true)?.call(/*return_error=*/ true)?;
LL| 1| thing1
LL| 1| .
LL| 1| get_thing_2(/*return_error=*/ false)
LL| 0| ?
LL| | .
LL| 1| call(/*return_error=*/ true)
LL| 1| .
LL| 1| expect_err(
LL| 1| "call should fail"
LL| 1| );
LL| 1| let val = thing1.get_thing_2(/*return_error=*/ true)?.call(/*return_error=*/ true)?;
^0 ^0 ^0
88| 0| assert_eq!(val, 57);
89| 0| let val = thing1.get_thing_2(/*return_error=*/ true)?.call(/*return_error=*/ false)?;
90| 0| assert_eq!(val, 57);
91| | }
92| | else
93| | {
94| 5| let val = thing1.get_thing_2(/*return_error=*/ false)?.call(/*return_error=*/ false)?;
LL| 0| assert_eq!(val, 57);
LL| 0| let val = thing1.get_thing_2(/*return_error=*/ true)?.call(/*return_error=*/ false)?;
LL| 0| assert_eq!(val, 57);
LL| | }
LL| | else
LL| | {
LL| 5| let val = thing1.get_thing_2(/*return_error=*/ false)?.call(/*return_error=*/ false)?;
^0 ^0
95| 5| assert_eq!(val, 57);
96| 5| let val = thing1
97| 5| .get_thing_2(/*return_error=*/ false)?
LL| 5| assert_eq!(val, 57);
LL| 5| let val = thing1
LL| 5| .get_thing_2(/*return_error=*/ false)?
^0
98| 5| .call(/*return_error=*/ false)?;
LL| 5| .call(/*return_error=*/ false)?;
^0
99| 5| assert_eq!(val, 57);
100| 5| let val = thing1
101| 5| .get_thing_2(/*return_error=*/ false)
102| 0| ?
103| 5| .call(/*return_error=*/ false)
104| 0| ?
105| | ;
106| 5| assert_eq!(val, 57);
107| | }
108| | }
109| 0| Ok(())
110| 1|}
111| |
112| 1|fn main() -> Result<(),()> {
113| 1| test1().expect_err("test1 should fail");
114| 1| test2()
115| 1| ?
116| | ;
117| 0| Ok(())
118| 1|}
LL| 5| assert_eq!(val, 57);
LL| 5| let val = thing1
LL| 5| .get_thing_2(/*return_error=*/ false)
LL| 0| ?
LL| 5| .call(/*return_error=*/ false)
LL| 0| ?
LL| | ;
LL| 5| assert_eq!(val, 57);
LL| | }
LL| | }
LL| 0| Ok(())
LL| 1|}
LL| |
LL| 1|fn main() -> Result<(),()> {
LL| 1| test1().expect_err("test1 should fail");
LL| 1| test2()
LL| 1| ?
LL| | ;
LL| 0| Ok(())
LL| 1|}

106
tests/run-coverage/unused.coverage
View File

@ -1,62 +1,62 @@
1| 2|fn foo<T>(x: T) {
2| 2| let mut i = 0;
3| 22| while i < 10 {
4| 20| i != 0 || i != 0;
LL| 2|fn foo<T>(x: T) {
LL| 2| let mut i = 0;
LL| 22| while i < 10 {
LL| 20| i != 0 || i != 0;
^2
5| 20| i += 1;
6| | }
7| 2|}
LL| 20| i += 1;
LL| | }
LL| 2|}
------------------
| unused::foo::<f32>:
| 1| 1|fn foo<T>(x: T) {
| 2| 1| let mut i = 0;
| 3| 11| while i < 10 {
| 4| 10| i != 0 || i != 0;
| LL| 1|fn foo<T>(x: T) {
| LL| 1| let mut i = 0;
| LL| 11| while i < 10 {
| LL| 10| i != 0 || i != 0;
| ^1
| 5| 10| i += 1;
| 6| | }
| 7| 1|}
| LL| 10| i += 1;
| LL| | }
| LL| 1|}
------------------
| unused::foo::<u32>:
| 1| 1|fn foo<T>(x: T) {
| 2| 1| let mut i = 0;
| 3| 11| while i < 10 {
| 4| 10| i != 0 || i != 0;
| LL| 1|fn foo<T>(x: T) {
| LL| 1| let mut i = 0;
| LL| 11| while i < 10 {
| LL| 10| i != 0 || i != 0;
| ^1
| 5| 10| i += 1;
| 6| | }
| 7| 1|}
| LL| 10| i += 1;
| LL| | }
| LL| 1|}
------------------
8| |
9| 0|fn unused_template_func<T>(x: T) {
10| 0| let mut i = 0;
11| 0| while i < 10 {
12| 0| i != 0 || i != 0;
13| 0| i += 1;
14| | }
15| 0|}
16| |
17| 0|fn unused_func(mut a: u32) {
18| 0| if a != 0 {
19| 0| a += 1;
20| 0| }
21| 0|}
22| |
23| 0|fn unused_func2(mut a: u32) {
24| 0| if a != 0 {
25| 0| a += 1;
26| 0| }
27| 0|}
28| |
29| 0|fn unused_func3(mut a: u32) {
30| 0| if a != 0 {
31| 0| a += 1;
32| 0| }
33| 0|}
34| |
35| 1|fn main() -> Result<(), u8> {
36| 1| foo::<u32>(0);
37| 1| foo::<f32>(0.0);
38| 1| Ok(())
39| 1|}
LL| |
LL| 0|fn unused_template_func<T>(x: T) {
LL| 0| let mut i = 0;
LL| 0| while i < 10 {
LL| 0| i != 0 || i != 0;
LL| 0| i += 1;
LL| | }
LL| 0|}
LL| |
LL| 0|fn unused_func(mut a: u32) {
LL| 0| if a != 0 {
LL| 0| a += 1;
LL| 0| }
LL| 0|}
LL| |
LL| 0|fn unused_func2(mut a: u32) {
LL| 0| if a != 0 {
LL| 0| a += 1;
LL| 0| }
LL| 0|}
LL| |
LL| 0|fn unused_func3(mut a: u32) {
LL| 0| if a != 0 {
LL| 0| a += 1;
LL| 0| }
LL| 0|}
LL| |
LL| 1|fn main() -> Result<(), u8> {
LL| 1| foo::<u32>(0);
LL| 1| foo::<f32>(0.0);
LL| 1| Ok(())
LL| 1|}

18
tests/run-coverage/unused_mod.coverage
View File

@ -1,13 +1,13 @@
$DIR/auxiliary/unused_mod_helper.rs:
1| 0|pub fn never_called_function() {
2| 0| println!("I am never called");
3| 0|}
LL| 0|pub fn never_called_function() {
LL| 0| println!("I am never called");
LL| 0|}
$DIR/unused_mod.rs:
1| |#[path = "auxiliary/unused_mod_helper.rs"]
2| |mod unused_module;
3| |
4| 1|fn main() {
5| 1| println!("hello world!");
6| 1|}
LL| |#[path = "auxiliary/unused_mod_helper.rs"]
LL| |mod unused_module;
LL| |
LL| 1|fn main() {
LL| 1| println!("hello world!");
LL| 1|}

286
tests/run-coverage/uses_crate.coverage
View File

@ -1,170 +1,170 @@
$DIR/auxiliary/used_crate.rs:
1| |#![allow(unused_assignments, unused_variables)]
2| |// compile-flags: -C opt-level=3
3| |use std::fmt::Debug; // ^^ validates coverage now works with optimizations
4| |
5| 1|pub fn used_function() {
6| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
7| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
8| 1| // dependent conditions.
9| 1| let is_true = std::env::args().len() == 1;
10| 1| let mut countdown = 0;
11| 1| if is_true {
12| 1| countdown = 10;
13| 1| }
LL| |#![allow(unused_assignments, unused_variables)]
LL| |// compile-flags: -C opt-level=3
LL| |use std::fmt::Debug; // ^^ validates coverage now works with optimizations
LL| |
LL| 1|pub fn used_function() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1| let mut countdown = 0;
LL| 1| if is_true {
LL| 1| countdown = 10;
LL| 1| }
^0
14| 1| use_this_lib_crate();
15| 1|}
16| |
17| 2|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
18| 2| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
19| 2|}
LL| 1| use_this_lib_crate();
LL| 1|}
LL| |
LL| 2|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
LL| 2| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
LL| 2|}
------------------
| Unexecuted instantiation: used_crate::used_only_from_bin_crate_generic_function::<_>
------------------
| used_crate::used_only_from_bin_crate_generic_function::<&alloc::vec::Vec<i32>>:
| 17| 1|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
| 18| 1| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
| 19| 1|}
| LL| 1|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
| used_crate::used_only_from_bin_crate_generic_function::<&str>:
| 17| 1|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
| 18| 1| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
| 19| 1|}
| LL| 1|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
20| |// Expect for above function: `Unexecuted instantiation` (see below)
21| 2|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
22| 2| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
23| 2|}
LL| |// Expect for above function: `Unexecuted instantiation` (see below)
LL| 2|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
LL| 2| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
LL| 2|}
------------------
| used_crate::used_only_from_this_lib_crate_generic_function::<&str>:
| 21| 1|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
| 22| 1| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
| 23| 1|}
| LL| 1|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
| used_crate::used_only_from_this_lib_crate_generic_function::<alloc::vec::Vec<i32>>:
| 21| 1|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
| 22| 1| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
| 23| 1|}
| LL| 1|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
24| |
25| 2|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
26| 2| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
27| 2|}
LL| |
LL| 2|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
LL| 2| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
LL| 2|}
------------------
| used_crate::used_from_bin_crate_and_lib_crate_generic_function::<&str>:
| 25| 1|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| 26| 1| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| 27| 1|}
| LL| 1|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
| used_crate::used_from_bin_crate_and_lib_crate_generic_function::<alloc::vec::Vec<i32>>:
| 25| 1|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| 26| 1| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| 27| 1|}
| LL| 1|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
28| |
29| 2|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
30| 2| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
31| 2|}
LL| |
LL| 2|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
LL| 2| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
LL| 2|}
------------------
| used_crate::used_with_same_type_from_bin_crate_and_lib_crate_generic_function::<&str>:
| 29| 1|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| 30| 1| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| 31| 1|}
| LL| 1|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
| used_crate::used_with_same_type_from_bin_crate_and_lib_crate_generic_function::<&str>:
| 29| 1|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| 30| 1| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| 31| 1|}
| LL| 1|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
32| |
33| 0|pub fn unused_generic_function<T: Debug>(arg: T) {
34| 0| println!("unused_generic_function with {:?}", arg);
35| 0|}
36| |
37| 0|pub fn unused_function() {
38| 0| let is_true = std::env::args().len() == 1;
39| 0| let mut countdown = 2;
40| 0| if !is_true {
41| 0| countdown = 20;
42| 0| }
43| 0|}
44| |
45| 0|fn unused_private_function() {
46| 0| let is_true = std::env::args().len() == 1;
47| 0| let mut countdown = 2;
48| 0| if !is_true {
49| 0| countdown = 20;
50| 0| }
51| 0|}
52| |
53| 1|fn use_this_lib_crate() {
54| 1| used_from_bin_crate_and_lib_crate_generic_function("used from library used_crate.rs");
55| 1| used_with_same_type_from_bin_crate_and_lib_crate_generic_function(
56| 1| "used from library used_crate.rs",
57| 1| );
58| 1| let some_vec = vec![5, 6, 7, 8];
59| 1| used_only_from_this_lib_crate_generic_function(some_vec);
60| 1| used_only_from_this_lib_crate_generic_function("used ONLY from library used_crate.rs");
61| 1|}
62| |
63| |// FIXME(#79651): "Unexecuted instantiation" errors appear in coverage results,
64| |// for example:
65| |//
66| |// | Unexecuted instantiation: used_crate::used_only_from_bin_crate_generic_function::<_>
67| |//
68| |// These notices appear when `llvm-cov` shows instantiations. This may be a
69| |// default option, but it can be suppressed with:
70| |//
71| |// ```shell
72| |// $ `llvm-cov show --show-instantiations=0 ...`
73| |// ```
74| |//
75| |// The notice is triggered because the function is unused by the library itself,
76| |// and when the library is compiled, a synthetic function is generated, so
77| |// unused function coverage can be reported. Coverage can be skipped for unused
78| |// generic functions with:
79| |//
80| |// ```shell
81| |// $ `rustc -Zunstable-options -C instrument-coverage=except-unused-generics ...`
82| |// ```
83| |//
84| |// Even though this function is used by `uses_crate.rs` (and
85| |// counted), with substitutions for `T`, those instantiations are only generated
86| |// when the generic function is actually used (from the binary, not from this
87| |// library crate). So the test result shows coverage for all instantiated
88| |// versions and their generic type substitutions, plus the `Unexecuted
89| |// instantiation` message for the non-substituted version. This is valid, but
90| |// unfortunately a little confusing.
91| |//
92| |// The library crate has its own coverage map, and the only way to show unused
93| |// coverage of a generic function is to include the generic function in the
94| |// coverage map, marked as an "unused function". If the library were used by
95| |// another binary that never used this generic function, then it would be valid
96| |// to show the unused generic, with unknown substitution (`_`).
97| |//
98| |// The alternative is to exclude all generics from being included in the "unused
99| |// functions" list, which would then omit coverage results for
100| |// `unused_generic_function<T>()`, below.
LL| |
LL| 0|pub fn unused_generic_function<T: Debug>(arg: T) {
LL| 0| println!("unused_generic_function with {:?}", arg);
LL| 0|}
LL| |
LL| 0|pub fn unused_function() {
LL| 0| let is_true = std::env::args().len() == 1;
LL| 0| let mut countdown = 2;
LL| 0| if !is_true {
LL| 0| countdown = 20;
LL| 0| }
LL| 0|}
LL| |
LL| 0|fn unused_private_function() {
LL| 0| let is_true = std::env::args().len() == 1;
LL| 0| let mut countdown = 2;
LL| 0| if !is_true {
LL| 0| countdown = 20;
LL| 0| }
LL| 0|}
LL| |
LL| 1|fn use_this_lib_crate() {
LL| 1| used_from_bin_crate_and_lib_crate_generic_function("used from library used_crate.rs");
LL| 1| used_with_same_type_from_bin_crate_and_lib_crate_generic_function(
LL| 1| "used from library used_crate.rs",
LL| 1| );
LL| 1| let some_vec = vec![5, 6, 7, 8];
LL| 1| used_only_from_this_lib_crate_generic_function(some_vec);
LL| 1| used_only_from_this_lib_crate_generic_function("used ONLY from library used_crate.rs");
LL| 1|}
LL| |
LL| |// FIXME(#79651): "Unexecuted instantiation" errors appear in coverage results,
LL| |// for example:
LL| |//
LL| |// | Unexecuted instantiation: used_crate::used_only_from_bin_crate_generic_function::<_>
LL| |//
LL| |// These notices appear when `llvm-cov` shows instantiations. This may be a
LL| |// default option, but it can be suppressed with:
LL| |//
LL| |// ```shell
LL| |// $ `llvm-cov show --show-instantiations=0 ...`
LL| |// ```
LL| |//
LL| |// The notice is triggered because the function is unused by the library itself,
LL| |// and when the library is compiled, a synthetic function is generated, so
LL| |// unused function coverage can be reported. Coverage can be skipped for unused
LL| |// generic functions with:
LL| |//
LL| |// ```shell
LL| |// $ `rustc -Zunstable-options -C instrument-coverage=except-unused-generics ...`
LL| |// ```
LL| |//
LL| |// Even though this function is used by `uses_crate.rs` (and
LL| |// counted), with substitutions for `T`, those instantiations are only generated
LL| |// when the generic function is actually used (from the binary, not from this
LL| |// library crate). So the test result shows coverage for all instantiated
LL| |// versions and their generic type substitutions, plus the `Unexecuted
LL| |// instantiation` message for the non-substituted version. This is valid, but
LL| |// unfortunately a little confusing.
LL| |//
LL| |// The library crate has its own coverage map, and the only way to show unused
LL| |// coverage of a generic function is to include the generic function in the
LL| |// coverage map, marked as an "unused function". If the library were used by
LL| |// another binary that never used this generic function, then it would be valid
LL| |// to show the unused generic, with unknown substitution (`_`).
LL| |//
LL| |// The alternative is to exclude all generics from being included in the "unused
LL| |// functions" list, which would then omit coverage results for
LL| |// `unused_generic_function<T>()`, below.
$DIR/uses_crate.rs:
1| |// This test was failing on Linux for a while due to #110393 somehow making
2| |// the unused functions not instrumented, but it seems to be fine now.
3| |
4| |// Validates coverage now works with optimizations
5| |// compile-flags: -C opt-level=3
6| |
7| |#![allow(unused_assignments, unused_variables)]
8| |
9| |// aux-build:used_crate.rs
10| |extern crate used_crate;
11| |
12| 1|fn main() {
13| 1| used_crate::used_function();
14| 1| let some_vec = vec![1, 2, 3, 4];
15| 1| used_crate::used_only_from_bin_crate_generic_function(&some_vec);
16| 1| used_crate::used_only_from_bin_crate_generic_function("used from bin uses_crate.rs");
17| 1| used_crate::used_from_bin_crate_and_lib_crate_generic_function(some_vec);
18| 1| used_crate::used_with_same_type_from_bin_crate_and_lib_crate_generic_function("interesting?");
19| 1|}
LL| |// This test was failing on Linux for a while due to #110393 somehow making
LL| |// the unused functions not instrumented, but it seems to be fine now.
LL| |
LL| |// Validates coverage now works with optimizations
LL| |// compile-flags: -C opt-level=3
LL| |
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| |// aux-build:used_crate.rs
LL| |extern crate used_crate;
LL| |
LL| 1|fn main() {
LL| 1| used_crate::used_function();
LL| 1| let some_vec = vec![1, 2, 3, 4];
LL| 1| used_crate::used_only_from_bin_crate_generic_function(&some_vec);
LL| 1| used_crate::used_only_from_bin_crate_generic_function("used from bin uses_crate.rs");
LL| 1| used_crate::used_from_bin_crate_and_lib_crate_generic_function(some_vec);
LL| 1| used_crate::used_with_same_type_from_bin_crate_and_lib_crate_generic_function("interesting?");
LL| 1|}

272
tests/run-coverage/uses_inline_crate.coverage
View File

@ -1,164 +1,164 @@
$DIR/auxiliary/used_inline_crate.rs:
1| |#![allow(unused_assignments, unused_variables)]
2| |
3| |// compile-flags: -C opt-level=3
4| |// ^^ validates coverage now works with optimizations
5| |use std::fmt::Debug;
6| |
7| 1|pub fn used_function() {
8| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
9| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
10| 1| // dependent conditions.
11| 1| let is_true = std::env::args().len() == 1;
12| 1| let mut countdown = 0;
13| 1| if is_true {
14| 1| countdown = 10;
15| 1| }
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| |// compile-flags: -C opt-level=3
LL| |// ^^ validates coverage now works with optimizations
LL| |use std::fmt::Debug;
LL| |
LL| 1|pub fn used_function() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1| let mut countdown = 0;
LL| 1| if is_true {
LL| 1| countdown = 10;
LL| 1| }
^0
16| 1| use_this_lib_crate();
17| 1|}
18| |
19| |#[inline(always)]
20| 1|pub fn used_inline_function() {
21| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
22| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
23| 1| // dependent conditions.
24| 1| let is_true = std::env::args().len() == 1;
25| 1| let mut countdown = 0;
26| 1| if is_true {
27| 1| countdown = 10;
28| 1| }
LL| 1| use_this_lib_crate();
LL| 1|}
LL| |
LL| |#[inline(always)]
LL| 1|pub fn used_inline_function() {
LL| 1| // Initialize test constants in a way that cannot be determined at compile time, to ensure
LL| 1| // rustc and LLVM cannot optimize out statements (or coverage counters) downstream from
LL| 1| // dependent conditions.
LL| 1| let is_true = std::env::args().len() == 1;
LL| 1| let mut countdown = 0;
LL| 1| if is_true {
LL| 1| countdown = 10;
LL| 1| }
^0
29| 1| use_this_lib_crate();
30| 1|}
31| |
32| |
33| |
34| |
35| |
36| |
37| |
38| |#[inline(always)]
39| 2|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
40| 2| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
41| 2|}
LL| 1| use_this_lib_crate();
LL| 1|}
LL| |
LL| |
LL| |
LL| |
LL| |
LL| |
LL| |
LL| |#[inline(always)]
LL| 2|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
LL| 2| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
LL| 2|}
------------------
| Unexecuted instantiation: used_inline_crate::used_only_from_bin_crate_generic_function::<_>
------------------
| used_inline_crate::used_only_from_bin_crate_generic_function::<&alloc::vec::Vec<i32>>:
| 39| 1|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
| 40| 1| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
| 41| 1|}
| LL| 1|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
| used_inline_crate::used_only_from_bin_crate_generic_function::<&str>:
| 39| 1|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
| 40| 1| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
| 41| 1|}
| LL| 1|pub fn used_only_from_bin_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_only_from_bin_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
42| |// Expect for above function: `Unexecuted instantiation` (see notes in `used_crate.rs`)
43| |
44| |#[inline(always)]
45| 4|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
46| 4| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
47| 4|}
LL| |// Expect for above function: `Unexecuted instantiation` (see notes in `used_crate.rs`)
LL| |
LL| |#[inline(always)]
LL| 4|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
LL| 4| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
LL| 4|}
------------------
| used_inline_crate::used_only_from_this_lib_crate_generic_function::<&str>:
| 45| 2|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
| 46| 2| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
| 47| 2|}
| LL| 2|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 2| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
| LL| 2|}
------------------
| used_inline_crate::used_only_from_this_lib_crate_generic_function::<alloc::vec::Vec<i32>>:
| 45| 2|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
| 46| 2| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
| 47| 2|}
| LL| 2|pub fn used_only_from_this_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 2| println!("used_only_from_this_lib_crate_generic_function with {:?}", arg);
| LL| 2|}
------------------
48| |
49| |#[inline(always)]
50| 3|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
51| 3| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
52| 3|}
LL| |
LL| |#[inline(always)]
LL| 3|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
LL| 3| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
LL| 3|}
------------------
| used_inline_crate::used_from_bin_crate_and_lib_crate_generic_function::<&str>:
| 50| 2|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| 51| 2| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| 52| 2|}
| LL| 2|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 2| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| LL| 2|}
------------------
| used_inline_crate::used_from_bin_crate_and_lib_crate_generic_function::<alloc::vec::Vec<i32>>:
| 50| 1|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| 51| 1| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| 52| 1|}
| LL| 1|pub fn used_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
53| |
54| |#[inline(always)]
55| 3|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
56| 3| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
57| 3|}
LL| |
LL| |#[inline(always)]
LL| 3|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
LL| 3| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
LL| 3|}
------------------
| used_inline_crate::used_with_same_type_from_bin_crate_and_lib_crate_generic_function::<&str>:
| 55| 1|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| 56| 1| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| 57| 1|}
| LL| 1|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 1| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| LL| 1|}
------------------
| used_inline_crate::used_with_same_type_from_bin_crate_and_lib_crate_generic_function::<&str>:
| 55| 2|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| 56| 2| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| 57| 2|}
| LL| 2|pub fn used_with_same_type_from_bin_crate_and_lib_crate_generic_function<T: Debug>(arg: T) {
| LL| 2| println!("used_with_same_type_from_bin_crate_and_lib_crate_generic_function with {:?}", arg);
| LL| 2|}
------------------
58| |
59| |#[inline(always)]
60| 0|pub fn unused_generic_function<T: Debug>(arg: T) {
61| 0| println!("unused_generic_function with {:?}", arg);
62| 0|}
63| |
64| |#[inline(always)]
65| 0|pub fn unused_function() {
66| 0| let is_true = std::env::args().len() == 1;
67| 0| let mut countdown = 2;
68| 0| if !is_true {
69| 0| countdown = 20;
70| 0| }
71| 0|}
72| |
73| |#[inline(always)]
74| 0|fn unused_private_function() {
75| 0| let is_true = std::env::args().len() == 1;
76| 0| let mut countdown = 2;
77| 0| if !is_true {
78| 0| countdown = 20;
79| 0| }
80| 0|}
81| |
82| 2|fn use_this_lib_crate() {
83| 2| used_from_bin_crate_and_lib_crate_generic_function("used from library used_crate.rs");
84| 2| used_with_same_type_from_bin_crate_and_lib_crate_generic_function(
85| 2| "used from library used_crate.rs",
86| 2| );
87| 2| let some_vec = vec![5, 6, 7, 8];
88| 2| used_only_from_this_lib_crate_generic_function(some_vec);
89| 2| used_only_from_this_lib_crate_generic_function("used ONLY from library used_crate.rs");
90| 2|}
LL| |
LL| |#[inline(always)]
LL| 0|pub fn unused_generic_function<T: Debug>(arg: T) {
LL| 0| println!("unused_generic_function with {:?}", arg);
LL| 0|}
LL| |
LL| |#[inline(always)]
LL| 0|pub fn unused_function() {
LL| 0| let is_true = std::env::args().len() == 1;
LL| 0| let mut countdown = 2;
LL| 0| if !is_true {
LL| 0| countdown = 20;
LL| 0| }
LL| 0|}
LL| |
LL| |#[inline(always)]
LL| 0|fn unused_private_function() {
LL| 0| let is_true = std::env::args().len() == 1;
LL| 0| let mut countdown = 2;
LL| 0| if !is_true {
LL| 0| countdown = 20;
LL| 0| }
LL| 0|}
LL| |
LL| 2|fn use_this_lib_crate() {
LL| 2| used_from_bin_crate_and_lib_crate_generic_function("used from library used_crate.rs");
LL| 2| used_with_same_type_from_bin_crate_and_lib_crate_generic_function(
LL| 2| "used from library used_crate.rs",
LL| 2| );
LL| 2| let some_vec = vec![5, 6, 7, 8];
LL| 2| used_only_from_this_lib_crate_generic_function(some_vec);
LL| 2| used_only_from_this_lib_crate_generic_function("used ONLY from library used_crate.rs");
LL| 2|}
$DIR/uses_inline_crate.rs:
1| |// This test was failing on Linux for a while due to #110393 somehow making
2| |// the unused functions not instrumented, but it seems to be fine now.
3| |
4| |// Validates coverage now works with optimizations
5| |// compile-flags: -C opt-level=3
6| |
7| |#![allow(unused_assignments, unused_variables)]
8| |
9| |// aux-build:used_inline_crate.rs
10| |extern crate used_inline_crate;
11| |
12| 1|fn main() {
13| 1| used_inline_crate::used_function();
14| 1| used_inline_crate::used_inline_function();
15| 1| let some_vec = vec![1, 2, 3, 4];
16| 1| used_inline_crate::used_only_from_bin_crate_generic_function(&some_vec);
17| 1| used_inline_crate::used_only_from_bin_crate_generic_function("used from bin uses_crate.rs");
18| 1| used_inline_crate::used_from_bin_crate_and_lib_crate_generic_function(some_vec);
19| 1| used_inline_crate::used_with_same_type_from_bin_crate_and_lib_crate_generic_function(
20| 1| "interesting?",
21| 1| );
22| 1|}
LL| |// This test was failing on Linux for a while due to #110393 somehow making
LL| |// the unused functions not instrumented, but it seems to be fine now.
LL| |
LL| |// Validates coverage now works with optimizations
LL| |// compile-flags: -C opt-level=3
LL| |
LL| |#![allow(unused_assignments, unused_variables)]
LL| |
LL| |// aux-build:used_inline_crate.rs
LL| |extern crate used_inline_crate;
LL| |
LL| 1|fn main() {
LL| 1| used_inline_crate::used_function();
LL| 1| used_inline_crate::used_inline_function();
LL| 1| let some_vec = vec![1, 2, 3, 4];
LL| 1| used_inline_crate::used_only_from_bin_crate_generic_function(&some_vec);
LL| 1| used_inline_crate::used_only_from_bin_crate_generic_function("used from bin uses_crate.rs");
LL| 1| used_inline_crate::used_from_bin_crate_and_lib_crate_generic_function(some_vec);
LL| 1| used_inline_crate::used_with_same_type_from_bin_crate_and_lib_crate_generic_function(
LL| 1| "interesting?",
LL| 1| );
LL| 1|}

10
tests/run-coverage/while.coverage
View File

@ -1,6 +1,6 @@
1| 1|fn main() {
2| 1| let num = 9;
3| 1| while num >= 10 {
4| 0| }
5| 1|}
LL| 1|fn main() {
LL| 1| let num = 9;
LL| 1| while num >= 10 {
LL| 0| }
LL| 1|}

84
tests/run-coverage/while_early_ret.coverage
View File

@ -1,43 +1,43 @@
1| |#![allow(unused_assignments)]
2| |// failure-status: 1
3| |
4| 1|fn main() -> Result<(),u8> {
5| 1| let mut countdown = 10;
6| | while
7| 7| countdown
8| 7| >
9| 7| 0
10| | {
11| | if
12| 7| countdown
13| 7| <
14| 7| 5
15| | {
16| | return
17| | if
18| 1| countdown
19| 1| >
20| 1| 8
21| | {
22| 0| Ok(())
23| | }
24| | else
25| | {
26| 1| Err(1)
27| | }
28| | ;
29| 6| }
30| 6| countdown
31| 6| -=
32| 6| 1
33| | ;
34| | }
35| 0| Ok(())
36| 1|}
37| |
38| |// ISSUE(77553): Originally, this test had `Err(1)` on line 22 (instead of `Ok(())`) and
39| |// `std::process::exit(2)` on line 26 (instead of `Err(1)`); and this worked as expected on Linux
40| |// and MacOS. But on Windows (MSVC, at least), the call to `std::process::exit()` exits the program
41| |// without saving the InstrProf coverage counters. The use of `std::process:exit()` is not critical
42| |// to the coverage test for early returns, but this is a limitation that should be fixed.
LL| |#![allow(unused_assignments)]
LL| |// failure-status: 1
LL| |
LL| 1|fn main() -> Result<(),u8> {
LL| 1| let mut countdown = 10;
LL| | while
LL| 7| countdown
LL| 7| >
LL| 7| 0
LL| | {
LL| | if
LL| 7| countdown
LL| 7| <
LL| 7| 5
LL| | {
LL| | return
LL| | if
LL| 1| countdown
LL| 1| >
LL| 1| 8
LL| | {
LL| 0| Ok(())
LL| | }
LL| | else
LL| | {
LL| 1| Err(1)
LL| | }
LL| | ;
LL| 6| }
LL| 6| countdown
LL| 6| -=
LL| 6| 1
LL| | ;
LL| | }
LL| 0| Ok(())
LL| 1|}
LL| |
LL| |// ISSUE(77553): Originally, this test had `Err(1)` on line 22 (instead of `Ok(())`) and
LL| |// `std::process::exit(2)` on line 26 (instead of `Err(1)`); and this worked as expected on Linux
LL| |// and MacOS. But on Windows (MSVC, at least), the call to `std::process::exit()` exits the program
LL| |// without saving the InstrProf coverage counters. The use of `std::process:exit()` is not critical
LL| |// to the coverage test for early returns, but this is a limitation that should be fixed.

74
tests/run-coverage/yield.coverage
View File

@ -1,38 +1,38 @@
1| |#![feature(generators, generator_trait)]
2| |#![allow(unused_assignments)]
3| |
4| |use std::ops::{Generator, GeneratorState};
5| |use std::pin::Pin;
6| |
7| 1|fn main() {
8| 1| let mut generator = || {
9| 1| yield 1;
10| 1| return "foo"
11| 1| };
12| |
13| 1| match Pin::new(&mut generator).resume(()) {
14| 1| GeneratorState::Yielded(1) => {}
15| 0| _ => panic!("unexpected value from resume"),
16| | }
17| 1| match Pin::new(&mut generator).resume(()) {
18| 1| GeneratorState::Complete("foo") => {}
19| 0| _ => panic!("unexpected value from resume"),
20| | }
21| |
22| 1| let mut generator = || {
23| 1| yield 1;
24| 1| yield 2;
25| 0| yield 3;
26| 0| return "foo"
27| 0| };
28| |
29| 1| match Pin::new(&mut generator).resume(()) {
30| 1| GeneratorState::Yielded(1) => {}
31| 0| _ => panic!("unexpected value from resume"),
32| | }
33| 1| match Pin::new(&mut generator).resume(()) {
34| 1| GeneratorState::Yielded(2) => {}
35| 0| _ => panic!("unexpected value from resume"),
36| | }
37| 1|}
LL| |#![feature(generators, generator_trait)]
LL| |#![allow(unused_assignments)]
LL| |
LL| |use std::ops::{Generator, GeneratorState};
LL| |use std::pin::Pin;
LL| |
LL| 1|fn main() {
LL| 1| let mut generator = || {
LL| 1| yield 1;
LL| 1| return "foo"
LL| 1| };
LL| |
LL| 1| match Pin::new(&mut generator).resume(()) {
LL| 1| GeneratorState::Yielded(1) => {}
LL| 0| _ => panic!("unexpected value from resume"),
LL| | }
LL| 1| match Pin::new(&mut generator).resume(()) {
LL| 1| GeneratorState::Complete("foo") => {}
LL| 0| _ => panic!("unexpected value from resume"),
LL| | }
LL| |
LL| 1| let mut generator = || {
LL| 1| yield 1;
LL| 1| yield 2;
LL| 0| yield 3;
LL| 0| return "foo"
LL| 0| };
LL| |
LL| 1| match Pin::new(&mut generator).resume(()) {
LL| 1| GeneratorState::Yielded(1) => {}
LL| 0| _ => panic!("unexpected value from resume"),
LL| | }
LL| 1| match Pin::new(&mut generator).resume(()) {
LL| 1| GeneratorState::Yielded(2) => {}
LL| 0| _ => panic!("unexpected value from resume"),
LL| | }
LL| 1|}