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Tweak wording and spans

This commit is contained in:
Esteban Küber 2022-06-21 15:54:17 -07:00
parent 29e2aa12ff
commit 9cb1874cd6
60 changed files with 368 additions and 326 deletions
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82
compiler/rustc_borrowck/src/diagnostics/conflict_errors.rs
View File

@ -21,6 +21,7 @@ use rustc_middle::ty::{
self, subst::Subst, suggest_constraining_type_params, EarlyBinder, PredicateKind, Ty,
};
use rustc_mir_dataflow::move_paths::{InitKind, MoveOutIndex, MovePathIndex};
use rustc_span::hygiene::DesugaringKind;
use rustc_span::symbol::sym;
use rustc_span::{BytePos, Span};
use rustc_trait_selection::infer::InferCtxtExt;
@ -331,7 +332,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
spans.push(span);
}
let (item_msg, name, desc) =
let (binding, name, desc) =
match self.describe_place_with_options(used_place, IncludingDowncast(true)) {
Some(name) => (format!("`{name}`"), format!("`{name}`"), format!("`{name}` ")),
None => ("value".to_string(), "the variable".to_string(), String::new()),
@ -351,7 +352,9 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
} else {
"initialized in all conditions"
};
let mut err = struct_span_err!(self, span, E0381, "binding {desc}isn't {initialized}");
let used = desired_action.as_general_verb_in_past_tense();
let mut err =
struct_span_err!(self, span, E0381, "{used} binding {desc}isn't {initialized}");
use_spans.var_span_label_path_only(
&mut err,
format!("{} occurs due to use{}", desired_action.as_noun(), use_spans.describe()),
@ -359,12 +362,11 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
if let InitializationRequiringAction::PartialAssignment = desired_action {
err.help(
"partial initialization isn't supported, fully initialize the binding with \
a default value and mutate, or use `std::mem::MaybeUninit`",
"partial initialization isn't supported, fully initialize the binding with a \
default value and mutate it, or use `std::mem::MaybeUninit`",
);
}
let verb = desired_action.as_verb_in_past_tense();
err.span_label(span, format!("{item_msg} {verb} here but it isn't {initialized}",));
err.span_label(span, format!("{binding} {used} here but it isn't {initialized}"));
// We use the statements were the binding was initialized, and inspect the HIR to look
// for the branching codepaths that aren't covered, to point at them.
@ -400,7 +402,7 @@ impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {
err.span_label(sp, &label);
}
}
err.span_label(decl_span, "variable declared here");
err.span_label(decl_span, "binding declared here but left uninitialized");
err
}
@ -2559,10 +2561,10 @@ impl<'b, 'v> Visitor<'v> for ConditionVisitor<'b> {
v.visit_expr(body);
if v.1 {
self.errors.push((
cond.span,
ex.span.to(cond.span),
format!(
"this `if` expression might be missing an `else` arm where {} is \
initialized",
"this `if` expression might be missing an `else` arm that initializes \
{}",
self.name,
),
));
@ -2578,10 +2580,24 @@ impl<'b, 'v> Visitor<'v> for ConditionVisitor<'b> {
match (a.1, b.1) {
(true, true) | (false, false) => {}
(true, false) => {
self.errors.push((
cond.span,
format!("{} is uninitialized if this condition isn't met", self.name,),
));
if other.span.is_desugaring(DesugaringKind::WhileLoop) {
self.errors.push((
cond.span,
format!(
"{} is uninitialized if this condition isn't met and the \
`while` loop runs 0 times",
self.name
),
));
} else {
self.errors.push((
body.span.shrink_to_hi().until(other.span),
format!(
"{} is uninitialized if this `else` arm is executed",
self.name
),
));
}
}
(false, true) => {
self.errors.push((
@ -2591,7 +2607,7 @@ impl<'b, 'v> Visitor<'v> for ConditionVisitor<'b> {
}
}
}
hir::ExprKind::Match(_, arms, _) => {
hir::ExprKind::Match(e, arms, loop_desugar) => {
// If the binding is initialized in one of the match arms, then the other match
// arms might be missing an initialization.
let results: Vec<bool> = arms
@ -2605,13 +2621,32 @@ impl<'b, 'v> Visitor<'v> for ConditionVisitor<'b> {
if results.iter().any(|x| *x) && !results.iter().all(|x| *x) {
for (arm, seen) in arms.iter().zip(results) {
if !seen {
self.errors.push((
arm.pat.span,
format!(
"{} is uninitialized if this pattern is matched",
self.name
),
));
if loop_desugar == hir::MatchSource::ForLoopDesugar {
self.errors.push((
e.span,
format!(
"{} is uninitialized if the `for` loop runs 0 times",
self.name
),
));
} else if let Some(guard) = &arm.guard {
self.errors.push((
arm.pat.span.to(guard.body().span),
format!(
"{} is uninitialized if this pattern and condition are \
matched",
self.name
),
));
} else {
self.errors.push((
arm.pat.span,
format!(
"{} is uninitialized if this pattern is matched",
self.name
),
));
}
}
}
}
@ -2619,8 +2654,7 @@ impl<'b, 'v> Visitor<'v> for ConditionVisitor<'b> {
// FIXME: should we also account for binops, particularly `&&` and `||`? `try` should
// also be accounted for. For now it is fine, as if we don't find *any* relevant
// branching code paths, we point at the places where the binding *is* initialized for
// *some* context. We should also specialize the output for `while` and `for` loops,
// but for now we can rely on their desugaring to provide appropriate output.
// *some* context.
_ => {}
}
walk_expr(self, ex);

10
compiler/rustc_borrowck/src/lib.rs
View File

@ -907,6 +907,16 @@ impl InitializationRequiringAction {
InitializationRequiringAction::PartialAssignment => "partially assigned",
}
}
fn as_general_verb_in_past_tense(self) -> &'static str {
match self {
InitializationRequiringAction::Borrow
| InitializationRequiringAction::MatchOn
| InitializationRequiringAction::Use => "used",
InitializationRequiringAction::Assignment => "assigned",
InitializationRequiringAction::PartialAssignment => "partially assigned",
}
}
}
impl<'cx, 'tcx> MirBorrowckCtxt<'cx, 'tcx> {

8
src/test/ui/asm/x86_64/type-check-5.stderr
View File

@ -1,16 +1,16 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/type-check-5.rs:15:28
|
LL | let x: u64;
| - variable declared here
| - binding declared here but left uninitialized
LL | asm!("{}", in(reg) x);
| ^ `x` used here but it isn't initialized
error[E0381]: binding `y` isn't initialized
error[E0381]: used binding `y` isn't initialized
--> $DIR/type-check-5.rs:18:9
|
LL | let mut y: u64;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | asm!("{}", inout(reg) y);
| ^^^^^^^^^^^^^^^^^^^^^^^^ `y` used here but it isn't initialized

6
src/test/ui/async-await/no-non-guaranteed-initialization.stderr
View File

@ -1,10 +1,10 @@
error[E0381]: binding `y` isn't initialized in all conditions
error[E0381]: used binding `y` isn't initialized in all conditions
--> $DIR/no-non-guaranteed-initialization.rs:9:5
|
LL | let y;
| - variable declared here
| - binding declared here but left uninitialized
LL | if x > 5 {
| ----- this `if` expression might be missing an `else` arm where `y` is initialized
| ----- this `if` expression might be missing an `else` arm that initializes `y`
...
LL | y
| ^ `y` used here but it isn't initialized in all conditions

18
src/test/ui/async-await/partial-initialization-across-await.stderr
View File

@ -1,32 +1,32 @@
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/partial-initialization-across-await.rs:13:5
|
LL | let mut t: (i32, i32);
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.0 = 42;
| ^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/partial-initialization-across-await.rs:21:5
|
LL | let mut t: T;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.0 = 42;
| ^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/partial-initialization-across-await.rs:29:5
|
LL | let mut t: S;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.x = 42;
| ^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 3 previous errors

12
src/test/ui/borrowck/assign_mutable_fields.stderr
View File

@ -1,22 +1,22 @@
error[E0381]: binding `x` isn't fully initialized
error[E0381]: partially assigned binding `x` isn't fully initialized
--> $DIR/assign_mutable_fields.rs:9:5
|
LL | let mut x: (u32, u32);
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | x.0 = 1;
| ^^^^^^^ `x` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `x` isn't fully initialized
error[E0381]: partially assigned binding `x` isn't fully initialized
--> $DIR/assign_mutable_fields.rs:17:5
|
LL | let mut x: (u32, u32);
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | x.0 = 1;
| ^^^^^^^ `x` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 2 previous errors

6
src/test/ui/borrowck/borrowck-and-init.stderr
View File

@ -1,13 +1,13 @@
error[E0381]: binding `i` isn't initialized in all conditions
error[E0381]: used binding `i` isn't initialized in all conditions
--> $DIR/borrowck-and-init.rs:5:20
|
LL | let i: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL |
LL | println!("{}", false && { i = 5; true });
| ----- binding initialized here in some conditions
LL | println!("{}", i);
| ^ `i` borrowed here but it isn't initialized in all conditions
| ^ `i` used here but it isn't initialized in all conditions
|
= note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)

6
src/test/ui/borrowck/borrowck-block-unint.stderr
View File

@ -1,10 +1,10 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-block-unint.rs:4:11
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | force(|| {
| ^^ `x` borrowed here but it isn't initialized
| ^^ `x` used here but it isn't initialized
LL | println!("{}", x);
| - borrow occurs due to use in closure

6
src/test/ui/borrowck/borrowck-break-uninit-2.stderr
View File

@ -1,11 +1,11 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-break-uninit-2.rs:9:20
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
...
LL | println!("{}", x);
| ^ `x` borrowed here but it isn't initialized
| ^ `x` used here but it isn't initialized
|
= note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)

6
src/test/ui/borrowck/borrowck-break-uninit.stderr
View File

@ -1,11 +1,11 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-break-uninit.rs:9:20
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
...
LL | println!("{}", x);
| ^ `x` borrowed here but it isn't initialized
| ^ `x` used here but it isn't initialized
|
= note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)

18
src/test/ui/borrowck/borrowck-field-sensitivity.stderr
View File

@ -108,35 +108,35 @@ LL | let _z = A { a: 4, .. x };
|
= note: move occurs because `x.b` has type `Box<isize>`, which does not implement the `Copy` trait
error[E0381]: binding `x` isn't fully initialized
error[E0381]: partially assigned binding `x` isn't fully initialized
--> $DIR/borrowck-field-sensitivity.rs:81:5
|
LL | let mut x: A;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | x.a = 1;
| ^^^^^^^ `x` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `x` isn't fully initialized
error[E0381]: partially assigned binding `x` isn't fully initialized
--> $DIR/borrowck-field-sensitivity.rs:87:5
|
LL | let mut x: A;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | x.a = 1;
| ^^^^^^^ `x` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `x` isn't fully initialized
error[E0381]: partially assigned binding `x` isn't fully initialized
--> $DIR/borrowck-field-sensitivity.rs:94:5
|
LL | let mut x: A;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | x.b = Box::new(1);
| ^^^ `x` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 14 previous errors

6
src/test/ui/borrowck/borrowck-if-no-else.stderr
View File

@ -1,10 +1,10 @@
error[E0381]: binding `x` isn't initialized in all conditions
error[E0381]: used binding `x` isn't initialized in all conditions
--> $DIR/borrowck-if-no-else.rs:5:9
|
LL | let x: isize; if 1 > 2 { x = 10; }
| - ----- this `if` expression might be missing an `else` arm where `x` is initialized
| - ----- this `if` expression might be missing an `else` arm that initializes `x`
| |
| variable declared here
| binding declared here but left uninitialized
LL | foo(x);
| ^ `x` used here but it isn't initialized in all conditions

4
src/test/ui/borrowck/borrowck-if-with-else.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `x` isn't initialized in all conditions
error[E0381]: used binding `x` isn't initialized in all conditions
--> $DIR/borrowck-if-with-else.rs:10:9
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | if 1 > 2 {
| ----- `x` is uninitialized if this condition is met
...

4
src/test/ui/borrowck/borrowck-init-in-called-fn-expr.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `i` isn't initialized
error[E0381]: used binding `i` isn't initialized
--> $DIR/borrowck-init-in-called-fn-expr.rs:4:9
|
LL | let i: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | i
| ^ `i` used here but it isn't initialized

4
src/test/ui/borrowck/borrowck-init-in-fn-expr.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `i` isn't initialized
error[E0381]: used binding `i` isn't initialized
--> $DIR/borrowck-init-in-fn-expr.rs:4:9
|
LL | let i: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | i
| ^ `i` used here but it isn't initialized

4
src/test/ui/borrowck/borrowck-init-in-fru.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `origin.y` isn't initialized
error[E0381]: used binding `origin.y` isn't initialized
--> $DIR/borrowck-init-in-fru.rs:9:14
|
LL | let mut origin: Point;
| ---------- variable declared here
| ---------- binding declared here but left uninitialized
LL | origin = Point { x: 10, ..origin };
| ^^^^^^^^^^^^^^^^^^^^^^^^^ `origin.y` used here but it isn't initialized

4
src/test/ui/borrowck/borrowck-init-op-equal.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `v` isn't initialized
error[E0381]: used binding `v` isn't initialized
--> $DIR/borrowck-init-op-equal.rs:3:5
|
LL | let v: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | v += 1;
| ^^^^^^ `v` used here but it isn't initialized

4
src/test/ui/borrowck/borrowck-init-plus-equal.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `v` isn't initialized
error[E0381]: used binding `v` isn't initialized
--> $DIR/borrowck-init-plus-equal.rs:3:9
|
LL | let mut v: isize;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | v = v + 1;
| ^ `v` used here but it isn't initialized

6
src/test/ui/borrowck/borrowck-or-init.stderr
View File

@ -1,13 +1,13 @@
error[E0381]: binding `i` isn't initialized in all conditions
error[E0381]: used binding `i` isn't initialized in all conditions
--> $DIR/borrowck-or-init.rs:5:20
|
LL | let i: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL |
LL | println!("{}", false || { i = 5; true });
| ----- binding initialized here in some conditions
LL | println!("{}", i);
| ^ `i` borrowed here but it isn't initialized in all conditions
| ^ `i` used here but it isn't initialized in all conditions
|
= note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)

4
src/test/ui/borrowck/borrowck-partial-reinit-4.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `x.0` isn't initialized
error[E0381]: assigned binding `x.0` isn't initialized
--> $DIR/borrowck-partial-reinit-4.rs:17:5
|
LL | let mut x : (Test2, Test2);
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | (x.0).0 = Some(Test);
| ^^^^^^^ `x.0` assigned here but it isn't initialized

4
src/test/ui/borrowck/borrowck-return.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-return.rs:3:12
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | return x;
| ^ `x` used here but it isn't initialized

4
src/test/ui/borrowck/borrowck-storage-dead.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-storage-dead.rs:16:17
|
LL | let x: i32;
| - variable declared here
| - binding declared here but left uninitialized
LL | let _ = x + 1;
| ^ `x` used here but it isn't initialized

4
src/test/ui/borrowck/borrowck-uninit-after-item.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `bar` isn't initialized
error[E0381]: used binding `bar` isn't initialized
--> $DIR/borrowck-uninit-after-item.rs:4:9
|
LL | let bar;
| --- variable declared here
| --- binding declared here but left uninitialized
LL | fn baz(_x: isize) { }
LL | baz(bar);
| ^^^ `bar` used here but it isn't initialized

4
src/test/ui/borrowck/borrowck-uninit-field-access.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `a.x` isn't initialized
error[E0381]: used binding `a.x` isn't initialized
--> $DIR/borrowck-uninit-field-access.rs:21:13
|
LL | let mut a: Point;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | let _ = a.x + 1;
| ^^^ `a.x` used here but it isn't initialized

40
src/test/ui/borrowck/borrowck-uninit-in-assignop.stderr
View File

@ -1,80 +1,80 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit-in-assignop.rs:6:5
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | x += 1;
| ^^^^^^ `x` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit-in-assignop.rs:9:5
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | x -= 1;
| ^^^^^^ `x` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit-in-assignop.rs:12:5
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | x *= 1;
| ^^^^^^ `x` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit-in-assignop.rs:15:5
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | x /= 1;
| ^^^^^^ `x` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit-in-assignop.rs:18:5
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | x %= 1;
| ^^^^^^ `x` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit-in-assignop.rs:21:5
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | x ^= 1;
| ^^^^^^ `x` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit-in-assignop.rs:24:5
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | x &= 1;
| ^^^^^^ `x` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit-in-assignop.rs:27:5
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | x |= 1;
| ^^^^^^ `x` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit-in-assignop.rs:30:5
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | x <<= 1;
| ^^^^^^^ `x` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit-in-assignop.rs:33:5
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | x >>= 1;
| ^^^^^^^ `x` used here but it isn't initialized

42
src/test/ui/borrowck/borrowck-uninit-ref-chain.stderr
View File

@ -1,66 +1,66 @@
error[E0381]: binding `**x` isn't initialized
error[E0381]: used binding `**x` isn't initialized
--> $DIR/borrowck-uninit-ref-chain.rs:8:14
|
LL | let x: &&Box<i32>;
| - variable declared here
| - binding declared here but left uninitialized
LL | let _y = &**x;
| ^^^^ `**x` borrowed here but it isn't initialized
| ^^^^ `**x` used here but it isn't initialized
error[E0381]: binding `**x` isn't initialized
error[E0381]: used binding `**x` isn't initialized
--> $DIR/borrowck-uninit-ref-chain.rs:11:14
|
LL | let x: &&S<i32, i32>;
| - variable declared here
| - binding declared here but left uninitialized
LL | let _y = &**x;
| ^^^^ `**x` borrowed here but it isn't initialized
| ^^^^ `**x` used here but it isn't initialized
error[E0381]: binding `**x` isn't initialized
error[E0381]: used binding `**x` isn't initialized
--> $DIR/borrowck-uninit-ref-chain.rs:14:14
|
LL | let x: &&i32;
| - variable declared here
| - binding declared here but left uninitialized
LL | let _y = &**x;
| ^^^^ `**x` borrowed here but it isn't initialized
| ^^^^ `**x` used here but it isn't initialized
error[E0381]: binding `a` isn't fully initialized
error[E0381]: partially assigned binding `a` isn't fully initialized
--> $DIR/borrowck-uninit-ref-chain.rs:18:5
|
LL | let mut a: S<i32, i32>;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | a.x = 0;
| ^^^^^^^ `a` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `a` isn't fully initialized
error[E0381]: partially assigned binding `a` isn't fully initialized
--> $DIR/borrowck-uninit-ref-chain.rs:22:5
|
LL | let mut a: S<&&i32, &&i32>;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | a.x = &&0;
| ^^^^^^^^^ `a` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `a` isn't fully initialized
error[E0381]: partially assigned binding `a` isn't fully initialized
--> $DIR/borrowck-uninit-ref-chain.rs:27:5
|
LL | let mut a: S<i32, i32>;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | a.x = 0;
| ^^^^^^^ `a` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `a` isn't fully initialized
error[E0381]: partially assigned binding `a` isn't fully initialized
--> $DIR/borrowck-uninit-ref-chain.rs:31:5
|
LL | let mut a: S<&&i32, &&i32>;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | a.x = &&0;
| ^^^^^^^^^ `a` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 7 previous errors

4
src/test/ui/borrowck/borrowck-uninit.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-uninit.rs:5:9
|
LL | let x: isize;
| - variable declared here
| - binding declared here but left uninitialized
LL | foo(x);
| ^ `x` used here but it isn't initialized

12
src/test/ui/borrowck/borrowck-union-uninitialized.stderr
View File

@ -1,24 +1,24 @@
error[E0381]: binding `s` isn't fully initialized
error[E0381]: partially assigned binding `s` isn't fully initialized
--> $DIR/borrowck-union-uninitialized.rs:13:9
|
LL | let mut s: S;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | let mut u: U;
LL | s.a = 0;
| ^^^^^^^ `s` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `u` isn't fully initialized
error[E0381]: partially assigned binding `u` isn't fully initialized
--> $DIR/borrowck-union-uninitialized.rs:14:9
|
LL | let mut u: U;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | s.a = 0;
LL | u.a = 0;
| ^^^^^^^ `u` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 2 previous errors

8
src/test/ui/borrowck/borrowck-use-in-index-lvalue.stderr
View File

@ -1,16 +1,16 @@
error[E0381]: binding `*w` isn't initialized
error[E0381]: used binding `*w` isn't initialized
--> $DIR/borrowck-use-in-index-lvalue.rs:3:5
|
LL | let w: &mut [isize];
| - variable declared here
| - binding declared here but left uninitialized
LL | w[5] = 0;
| ^^^^ `*w` used here but it isn't initialized
error[E0381]: binding `*w` isn't initialized
error[E0381]: used binding `*w` isn't initialized
--> $DIR/borrowck-use-in-index-lvalue.rs:6:5
|
LL | let mut w: &mut [isize];
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | w[5] = 0;
| ^^^^ `*w` used here but it isn't initialized

6
src/test/ui/borrowck/borrowck-use-uninitialized-in-cast-trait.stderr
View File

@ -1,10 +1,10 @@
error[E0381]: binding `*x` isn't initialized
error[E0381]: used binding `*x` isn't initialized
--> $DIR/borrowck-use-uninitialized-in-cast-trait.rs:9:13
|
LL | let x: &i32;
| - variable declared here
| - binding declared here but left uninitialized
LL | let y = x as *const dyn Foo;
| ^ `*x` borrowed here but it isn't initialized
| ^ `*x` used here but it isn't initialized
error: aborting due to previous error

6
src/test/ui/borrowck/borrowck-use-uninitialized-in-cast.stderr
View File

@ -1,10 +1,10 @@
error[E0381]: binding `*x` isn't initialized
error[E0381]: used binding `*x` isn't initialized
--> $DIR/borrowck-use-uninitialized-in-cast.rs:7:13
|
LL | let x: &i32;
| - variable declared here
| - binding declared here but left uninitialized
LL | let y = x as *const i32;
| ^ `*x` borrowed here but it isn't initialized
| ^ `*x` used here but it isn't initialized
error: aborting due to previous error

8
src/test/ui/borrowck/borrowck-while-break.stderr
View File

@ -1,13 +1,13 @@
error[E0381]: binding `v` isn't initialized in all conditions
error[E0381]: used binding `v` isn't initialized in all conditions
--> $DIR/borrowck-while-break.rs:7:20
|
LL | let v;
| - variable declared here
| - binding declared here but left uninitialized
LL | while cond {
| ---- `v` is uninitialized if this condition isn't met
| ---- `v` is uninitialized if this condition isn't met and the `while` loop runs 0 times
...
LL | println!("{}", v);
| ^ `v` borrowed here but it isn't initialized in all conditions
| ^ `v` used here but it isn't initialized in all conditions
|
= note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)

4
src/test/ui/borrowck/borrowck-while-cond.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/borrowck-while-cond.rs:3:11
|
LL | let x: bool;
| - variable declared here
| - binding declared here but left uninitialized
LL | while x { }
| ^ `x` used here but it isn't initialized

6
src/test/ui/borrowck/borrowck-while.stderr
View File

@ -1,10 +1,10 @@
error[E0381]: binding `x` isn't initialized in all conditions
error[E0381]: used binding `x` isn't initialized in all conditions
--> $DIR/borrowck-while.rs:4:12
|
LL | let mut x: isize;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | while 1 == 1 { x = 10; }
| ------ `x` is uninitialized if this condition isn't met
| ------ `x` is uninitialized if this condition isn't met and the `while` loop runs 0 times
LL | return x;
| ^ `x` used here but it isn't initialized in all conditions

24
src/test/ui/borrowck/disallow-possibly-uninitialized.stderr
View File

@ -1,42 +1,42 @@
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/disallow-possibly-uninitialized.rs:6:5
|
LL | let mut t: (u64, u64);
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.0 = 1;
| ^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/disallow-possibly-uninitialized.rs:11:5
|
LL | let mut t: (u64, u64);
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.1 = 1;
| ^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/disallow-possibly-uninitialized.rs:16:5
|
LL | let mut t: (u64, u64);
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.0 = 1;
| ^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/disallow-possibly-uninitialized.rs:20:5
|
LL | let mut t: (u64,);
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.0 = 1;
| ^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 4 previous errors

12
src/test/ui/borrowck/issue-24267-flow-exit.stderr
View File

@ -1,22 +1,22 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/issue-24267-flow-exit.rs:12:20
|
LL | let x: i32;
| - variable declared here
| - binding declared here but left uninitialized
LL | loop { x = break; }
LL | println!("{}", x);
| ^ `x` borrowed here but it isn't initialized
| ^ `x` used here but it isn't initialized
|
= note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/issue-24267-flow-exit.rs:18:20
|
LL | let x: i32;
| - variable declared here
| - binding declared here but left uninitialized
LL | for _ in 0..10 { x = continue; }
LL | println!("{}", x);
| ^ `x` borrowed here but it isn't initialized
| ^ `x` used here but it isn't initialized
|
= note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)

18
src/test/ui/borrowck/issue-54499-field-mutation-marks-mut-as-used.stderr
View File

@ -1,32 +1,32 @@
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/issue-54499-field-mutation-marks-mut-as-used.rs:12:9
|
LL | let mut t: Tuple;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.0 = S(1);
| ^^^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `u` isn't fully initialized
error[E0381]: partially assigned binding `u` isn't fully initialized
--> $DIR/issue-54499-field-mutation-marks-mut-as-used.rs:20:9
|
LL | let mut u: Tpair;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | u.0 = S(1);
| ^^^^^^^^^^ `u` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `v` isn't fully initialized
error[E0381]: partially assigned binding `v` isn't fully initialized
--> $DIR/issue-54499-field-mutation-marks-mut-as-used.rs:28:9
|
LL | let mut v: Spair;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | v.x = S(1);
| ^^^^^^^^^^ `v` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 3 previous errors

18
src/test/ui/borrowck/issue-54499-field-mutation-of-never-init.stderr
View File

@ -1,32 +1,32 @@
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/issue-54499-field-mutation-of-never-init.rs:12:9
|
LL | let t: Tuple;
| - variable declared here
| - binding declared here but left uninitialized
LL | t.0 = S(1);
| ^^^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `u` isn't fully initialized
error[E0381]: partially assigned binding `u` isn't fully initialized
--> $DIR/issue-54499-field-mutation-of-never-init.rs:20:9
|
LL | let u: Tpair;
| - variable declared here
| - binding declared here but left uninitialized
LL | u.0 = S(1);
| ^^^^^^^^^^ `u` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `v` isn't fully initialized
error[E0381]: partially assigned binding `v` isn't fully initialized
--> $DIR/issue-54499-field-mutation-of-never-init.rs:28:9
|
LL | let v: Spair;
| - variable declared here
| - binding declared here but left uninitialized
LL | v.x = S(1);
| ^^^^^^^^^^ `v` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 3 previous errors

4
src/test/ui/borrowck/issue-62107-match-arm-scopes.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `e` isn't initialized
error[E0381]: used binding `e` isn't initialized
--> $DIR/issue-62107-match-arm-scopes.rs:3:11
|
LL | let e: i32;
| - variable declared here
| - binding declared here but left uninitialized
LL | match e {
| ^ `e` used here but it isn't initialized

12
src/test/ui/borrowck/reassignment_immutable_fields.stderr
View File

@ -1,22 +1,22 @@
error[E0381]: binding `x` isn't fully initialized
error[E0381]: partially assigned binding `x` isn't fully initialized
--> $DIR/reassignment_immutable_fields.rs:7:5
|
LL | let x: (u32, u32);
| - variable declared here
| - binding declared here but left uninitialized
LL | x.0 = 1;
| ^^^^^^^ `x` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `x` isn't fully initialized
error[E0381]: partially assigned binding `x` isn't fully initialized
--> $DIR/reassignment_immutable_fields.rs:15:5
|
LL | let x: (u32, u32);
| - variable declared here
| - binding declared here but left uninitialized
LL | x.0 = 1;
| ^^^^^^^ `x` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 2 previous errors

6
src/test/ui/borrowck/reassignment_immutable_fields_overlapping.stderr
View File

@ -1,12 +1,12 @@
error[E0381]: binding `x` isn't fully initialized
error[E0381]: partially assigned binding `x` isn't fully initialized
--> $DIR/reassignment_immutable_fields_overlapping.rs:12:5
|
LL | let x: Foo;
| - variable declared here
| - binding declared here but left uninitialized
LL | x.a = 1;
| ^^^^^^^ `x` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0594]: cannot assign to `x.b`, as `x` is not declared as mutable
--> $DIR/reassignment_immutable_fields_overlapping.rs:13:5

6
src/test/ui/borrowck/reassignment_immutable_fields_twice.stderr
View File

@ -7,15 +7,15 @@ LL | x = (22, 44);
LL | x.0 = 1;
| ^^^^^^^ cannot assign
error[E0381]: binding `x` isn't fully initialized
error[E0381]: partially assigned binding `x` isn't fully initialized
--> $DIR/reassignment_immutable_fields_twice.rs:12:5
|
LL | let x: (u32, u32);
| - variable declared here
| - binding declared here but left uninitialized
LL | x.0 = 1;
| ^^^^^^^ `x` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 2 previous errors

34
src/test/ui/closures/2229_closure_analysis/match/pattern-matching-should-fail.stderr
View File

@ -12,68 +12,68 @@ LL + _ => todo!(),
LL ~ };
|
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/pattern-matching-should-fail.rs:8:23
|
LL | let x: !;
| - variable declared here
| - binding declared here but left uninitialized
LL | let c1 = || match x { };
| ^ `x` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/pattern-matching-should-fail.rs:15:14
|
LL | let x: !;
| - variable declared here
| - binding declared here but left uninitialized
LL | let c2 = || match x { _ => () };
| ^^ - borrow occurs due to use in closure
| |
| `x` borrowed here but it isn't initialized
| `x` used here but it isn't initialized
error[E0381]: binding `variant` isn't initialized
error[E0381]: used binding `variant` isn't initialized
--> $DIR/pattern-matching-should-fail.rs:27:13
|
LL | let variant: !;
| ------- variable declared here
| ------- binding declared here but left uninitialized
LL | let c = || {
| ^^ `variant` borrowed here but it isn't initialized
| ^^ `variant` used here but it isn't initialized
LL |
LL | match variant {
| ------- borrow occurs due to use in closure
error[E0381]: binding `variant` isn't initialized
error[E0381]: used binding `variant` isn't initialized
--> $DIR/pattern-matching-should-fail.rs:39:13
|
LL | let variant: !;
| ------- variable declared here
| ------- binding declared here but left uninitialized
LL | let c = || {
| ^^ `variant` borrowed here but it isn't initialized
| ^^ `variant` used here but it isn't initialized
LL | match variant {
| ------- borrow occurs due to use in closure
error[E0381]: binding `g` isn't initialized
error[E0381]: used binding `g` isn't initialized
--> $DIR/pattern-matching-should-fail.rs:54:15
|
LL | let g: !;
| - variable declared here
| - binding declared here but left uninitialized
...
LL | match g { };
| ^ `g` used here but it isn't initialized
error[E0381]: binding `t` isn't initialized
error[E0381]: used binding `t` isn't initialized
--> $DIR/pattern-matching-should-fail.rs:56:19
|
LL | let t: !;
| - variable declared here
| - binding declared here but left uninitialized
...
LL | match t { };
| ^ `t` used here but it isn't initialized
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/pattern-matching-should-fail.rs:67:23
|
LL | let x: u8;
| - variable declared here
| - binding declared here but left uninitialized
LL | let c1 = || match x { };
| ^ `x` used here but it isn't initialized

6
src/test/ui/const-generics/const-generic-default-wont-borrowck.stderr
View File

@ -1,10 +1,10 @@
error[E0381]: binding `*s` isn't initialized
error[E0381]: used binding `*s` isn't initialized
--> $DIR/const-generic-default-wont-borrowck.rs:2:26
|
LL | let s: &'static str; s.len()
| - ^^^^^^^ `*s` borrowed here but it isn't initialized
| - ^^^^^^^ `*s` used here but it isn't initialized
| |
| variable declared here
| binding declared here but left uninitialized
error: aborting due to previous error

6
src/test/ui/consts/issue-78655.stderr
View File

@ -1,10 +1,10 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/issue-78655.rs:3:5
|
LL | let x;
| - variable declared here
| - binding declared here but left uninitialized
LL | &x
| ^^ `x` borrowed here but it isn't initialized
| ^^ `x` used here but it isn't initialized
error: could not evaluate constant pattern
--> $DIR/issue-78655.rs:7:9

4
src/test/ui/drop/repeat-drop-2.stderr
View File

@ -17,11 +17,11 @@ LL | const _: [String; 0] = [String::new(); 0];
| |constants cannot evaluate destructors
| value is dropped here
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/repeat-drop-2.rs:12:14
|
LL | let x: u8;
| - variable declared here
| - binding declared here but left uninitialized
LL | let _ = [x; 0];
| ^ `x` used here but it isn't initialized

18
src/test/ui/generator/partial-initialization-across-yield.stderr
View File

@ -1,32 +1,32 @@
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/partial-initialization-across-yield.rs:12:9
|
LL | let mut t: (i32, i32);
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.0 = 42;
| ^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/partial-initialization-across-yield.rs:22:9
|
LL | let mut t: T;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.0 = 42;
| ^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/partial-initialization-across-yield.rs:32:9
|
LL | let mut t: S;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | t.x = 42;
| ^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error: aborting due to 3 previous errors

6
src/test/ui/loops/loop-proper-liveness.stderr
View File

@ -1,11 +1,11 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/loop-proper-liveness.rs:9:22
|
LL | let x: i32;
| - variable declared here
| - binding declared here but left uninitialized
...
LL | println!("{:?}", x);
| ^ `x` borrowed here but it isn't initialized
| ^ `x` used here but it isn't initialized
|
= note: this error originates in the macro `$crate::format_args_nl` (in Nightly builds, run with -Z macro-backtrace for more info)

4
src/test/ui/mir/drop-elaboration-after-borrowck-error.stderr
View File

@ -16,11 +16,11 @@ LL | let a: [String; 1];
LL | };
| - value is dropped here
error[E0381]: binding `a` isn't initialized
error[E0381]: used binding `a` isn't initialized
--> $DIR/drop-elaboration-after-borrowck-error.rs:7:5
|
LL | let a: [String; 1];
| - variable declared here
| - binding declared here but left uninitialized
LL |
LL | a[0] = String::new();
| ^^^^ `a` used here but it isn't initialized

4
src/test/ui/moves/issue-72649-uninit-in-loop.rs
View File

@ -57,14 +57,14 @@ fn moved_loop_2() {
fn uninit_1() {
loop {
let value: NonCopy; //~ NOTE variable declared here
let value: NonCopy; //~ NOTE declared here
let _used = value; //~ ERROR binding `value` isn't initialized
//~^ NOTE `value` used here but it isn't initialized
}
}
fn uninit_2() {
let mut value: NonCopy; //~ NOTE variable declared here
let mut value: NonCopy; //~ NOTE declared here
loop {
let _used = value; //~ ERROR binding `value` isn't initialized
//~^ NOTE `value` used here but it isn't initialized

8
src/test/ui/moves/issue-72649-uninit-in-loop.stderr
View File

@ -40,19 +40,19 @@ LL | let mut value = NonCopy{};
LL | let _used2 = value;
| ^^^^^ value moved here, in previous iteration of loop
error[E0381]: binding `value` isn't initialized
error[E0381]: used binding `value` isn't initialized
--> $DIR/issue-72649-uninit-in-loop.rs:61:21
|
LL | let value: NonCopy;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | let _used = value;
| ^^^^^ `value` used here but it isn't initialized
error[E0381]: binding `value` isn't initialized
error[E0381]: used binding `value` isn't initialized
--> $DIR/issue-72649-uninit-in-loop.rs:69:21
|
LL | let mut value: NonCopy;
| --------- variable declared here
| --------- binding declared here but left uninitialized
LL | loop {
LL | let _used = value;
| ^^^^^ `value` used here but it isn't initialized

4
src/test/ui/moves/move-into-dead-array-1.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `a` isn't initialized
error[E0381]: used binding `a` isn't initialized
--> $DIR/move-into-dead-array-1.rs:14:5
|
LL | let mut a: [D; 4];
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | a[i] = d();
| ^^^^ `a` used here but it isn't initialized

6
src/test/ui/moves/move-of-addr-of-mut.stderr
View File

@ -1,10 +1,10 @@
error[E0381]: binding `x` isn't initialized
error[E0381]: used binding `x` isn't initialized
--> $DIR/move-of-addr-of-mut.rs:8:5
|
LL | let mut x: S;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | std::ptr::addr_of_mut!(x);
| ^^^^^^^^^^^^^^^^^^^^^^^^^ `x` borrowed here but it isn't initialized
| ^^^^^^^^^^^^^^^^^^^^^^^^^ `x` used here but it isn't initialized
|
= note: this error originates in the macro `std::ptr::addr_of_mut` (in Nightly builds, run with -Z macro-backtrace for more info)

20
src/test/ui/nll/issue-21232-partial-init-and-erroneous-use.stderr
View File

@ -1,16 +1,16 @@
error[E0381]: binding `d` isn't initialized
error[E0381]: assigned binding `d` isn't initialized
--> $DIR/issue-21232-partial-init-and-erroneous-use.rs:28:5
|
LL | let d: D;
| - variable declared here
| - binding declared here but left uninitialized
LL | d.x = 10;
| ^^^^^^^^ `d` assigned here but it isn't initialized
error[E0381]: binding `d` isn't initialized
error[E0381]: assigned binding `d` isn't initialized
--> $DIR/issue-21232-partial-init-and-erroneous-use.rs:33:5
|
LL | let mut d: D;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | d.x = 10;
| ^^^^^^^^ `d` assigned here but it isn't initialized
@ -24,25 +24,25 @@ LL | drop(d);
LL | d.x = 10;
| ^^^^^^^^ value assigned here after move
error[E0381]: binding `d.s` isn't fully initialized
error[E0381]: partially assigned binding `d.s` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-erroneous-use.rs:45:5
|
LL | let d: D;
| - variable declared here
| - binding declared here but left uninitialized
LL | d.s.y = 20;
| ^^^^^^^^^^ `d.s` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `d.s` isn't fully initialized
error[E0381]: partially assigned binding `d.s` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-erroneous-use.rs:50:5
|
LL | let mut d: D;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | d.s.y = 20;
| ^^^^^^^^^^ `d.s` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0382]: assign to part of moved value: `d`
--> $DIR/issue-21232-partial-init-and-erroneous-use.rs:56:5

72
src/test/ui/nll/issue-21232-partial-init-and-use.stderr
View File

@ -1,22 +1,22 @@
error[E0381]: binding `s` isn't fully initialized
error[E0381]: partially assigned binding `s` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:97:5
|
LL | let s: S<B>;
| - variable declared here
| - binding declared here but left uninitialized
LL | s.x = 10; s.y = Box::new(20);
| ^^^^^^^^ `s` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:103:5
|
LL | let t: T;
| - variable declared here
| - binding declared here but left uninitialized
LL | t.0 = 10; t.1 = Box::new(20);
| ^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0382]: assign to part of moved value: `s`
--> $DIR/issue-21232-partial-init-and-use.rs:109:5
@ -38,25 +38,25 @@ LL | let mut t: T = (0, Box::new(0)); drop(t);
LL | t.0 = 10; t.1 = Box::new(20);
| ^^^^^^^^ value partially assigned here after move
error[E0381]: binding `s` isn't fully initialized
error[E0381]: partially assigned binding `s` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:123:5
|
LL | let s: S<B>;
| - variable declared here
| - binding declared here but left uninitialized
LL | s.x = 10;
| ^^^^^^^^ `s` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:129:5
|
LL | let t: T;
| - variable declared here
| - binding declared here but left uninitialized
LL | t.0 = 10;
| ^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0382]: assign to part of moved value: `s`
--> $DIR/issue-21232-partial-init-and-use.rs:135:5
@ -78,45 +78,45 @@ LL | let mut t: T = (0, Box::new(0)); drop(t);
LL | t.0 = 10;
| ^^^^^^^^ value partially assigned here after move
error[E0381]: binding `s` isn't fully initialized
error[E0381]: partially assigned binding `s` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:149:5
|
LL | let s: S<Void>;
| - variable declared here
| - binding declared here but left uninitialized
LL | s.x = 10;
| ^^^^^^^^ `s` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `t` isn't fully initialized
error[E0381]: partially assigned binding `t` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:155:5
|
LL | let t: Tvoid;
| - variable declared here
| - binding declared here but left uninitialized
LL | t.0 = 10;
| ^^^^^^^^ `t` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `q.r.f` isn't fully initialized
error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:170:5
|
LL | let q: Q<S<B>>;
| - variable declared here
| - binding declared here but left uninitialized
LL | q.r.f.x = 10; q.r.f.y = Box::new(20);
| ^^^^^^^^^^^^ `q.r.f` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `q.r.f` isn't fully initialized
error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:176:5
|
LL | let q: Q<T>;
| - variable declared here
| - binding declared here but left uninitialized
LL | q.r.f.0 = 10; q.r.f.1 = Box::new(20);
| ^^^^^^^^^^^^ `q.r.f` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0382]: assign to part of moved value: `q.r`
--> $DIR/issue-21232-partial-init-and-use.rs:182:5
@ -138,25 +138,25 @@ LL | q.r.f.0 = 10; q.r.f.1 = Box::new(20);
|
= note: move occurs because `q.r` has type `R<(u32, Box<u32>)>`, which does not implement the `Copy` trait
error[E0381]: binding `q.r.f` isn't fully initialized
error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:196:5
|
LL | let q: Q<S<B>>;
| - variable declared here
| - binding declared here but left uninitialized
LL | q.r.f.x = 10;
| ^^^^^^^^^^^^ `q.r.f` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `q.r.f` isn't fully initialized
error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:202:5
|
LL | let q: Q<T>;
| - variable declared here
| - binding declared here but left uninitialized
LL | q.r.f.0 = 10;
| ^^^^^^^^^^^^ `q.r.f` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0382]: assign to part of moved value: `q.r`
--> $DIR/issue-21232-partial-init-and-use.rs:208:5
@ -178,25 +178,25 @@ LL | q.r.f.0 = 10;
|
= note: move occurs because `q.r` has type `R<(u32, Box<u32>)>`, which does not implement the `Copy` trait
error[E0381]: binding `q.r.f` isn't fully initialized
error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:222:5
|
LL | let mut q: Q<S<Void>>;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | q.r.f.x = 10;
| ^^^^^^^^^^^^ `q.r.f` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0381]: binding `q.r.f` isn't fully initialized
error[E0381]: partially assigned binding `q.r.f` isn't fully initialized
--> $DIR/issue-21232-partial-init-and-use.rs:228:5
|
LL | let mut q: Q<Tvoid>;
| ----- variable declared here
| ----- binding declared here but left uninitialized
LL | q.r.f.0 = 10;
| ^^^^^^^^^^^^ `q.r.f` partially assigned here but it isn't fully initialized
|
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate, or use `std::mem::MaybeUninit`
= help: partial initialization isn't supported, fully initialize the binding with a default value and mutate it, or use `std::mem::MaybeUninit`
error[E0382]: assign to part of moved value: `c`
--> $DIR/issue-21232-partial-init-and-use.rs:245:13

6
src/test/ui/nll/match-cfg-fake-edges.stderr
View File

@ -1,11 +1,9 @@
error[E0381]: binding `x` isn't initialized in all conditions
error[E0381]: used binding `x` isn't initialized in all conditions
--> $DIR/match-cfg-fake-edges.rs:21:13
|
LL | let x;
| - variable declared here
| - binding declared here but left uninitialized
...
LL | _ if {
| - `x` is uninitialized if this pattern is matched
LL | x;
| ^ `x` used here but it isn't initialized in all conditions

4
src/test/ui/nll/match-on-borrowed.stderr
View File

@ -33,11 +33,11 @@ LL | match t {
LL | x;
| - borrow later used here
error[E0381]: binding `n` isn't initialized
error[E0381]: used binding `n` isn't initialized
--> $DIR/match-on-borrowed.rs:93:11
|
LL | let n: Never;
| - variable declared here
| - binding declared here but left uninitialized
LL | match n {}
| ^ `n` used here but it isn't initialized

12
src/test/ui/rfc-2497-if-let-chains/chains-without-let.stderr
View File

@ -1,28 +1,28 @@
error[E0381]: binding `z` isn't initialized in all conditions
error[E0381]: used binding `z` isn't initialized in all conditions
--> $DIR/chains-without-let.rs:3:34
|
LL | let z;
| - variable declared here
| - binding declared here but left uninitialized
LL | if true && { z = 3; true} && z == 3 {}
| ----- ^ `z` used here but it isn't initialized in all conditions
| |
| binding initialized here in some conditions
error[E0381]: binding `z` isn't initialized in all conditions
error[E0381]: used binding `z` isn't initialized in all conditions
--> $DIR/chains-without-let.rs:9:31
|
LL | let z;
| - variable declared here
| - binding declared here but left uninitialized
LL | true && { z = 3; true} && z == 3;
| ----- ^ `z` used here but it isn't initialized in all conditions
| |
| binding initialized here in some conditions
error[E0381]: binding `z` isn't initialized in all conditions
error[E0381]: used binding `z` isn't initialized in all conditions
--> $DIR/chains-without-let.rs:15:36
|
LL | let z;
| - variable declared here
| - binding declared here but left uninitialized
LL | if false || { z = 3; false} || z == 3 {}
| ----- ^ `z` used here but it isn't initialized in all conditions
| |

6
src/test/ui/try-block/try-block-opt-init.stderr
View File

@ -1,14 +1,14 @@
error[E0381]: binding `cfg_res` isn't initialized in all conditions
error[E0381]: used binding `cfg_res` isn't initialized in all conditions
--> $DIR/try-block-opt-init.rs:15:5
|
LL | let cfg_res;
| ------- variable declared here
| ------- binding declared here but left uninitialized
...
LL | cfg_res = 5;
| ----------- binding initialized here in some conditions
...
LL | assert_eq!(cfg_res, 5);
| ^^^^^^^^^^^^^^^^^^^^^^ `cfg_res` borrowed here but it isn't initialized in all conditions
| ^^^^^^^^^^^^^^^^^^^^^^ `cfg_res` used here but it isn't initialized in all conditions
|
= note: this error originates in the macro `assert_eq` (in Nightly builds, run with -Z macro-backtrace for more info)

4
src/test/ui/uninhabited/privately-uninhabited-mir-call.stderr
View File

@ -1,8 +1,8 @@
error[E0381]: binding `y` isn't initialized
error[E0381]: used binding `y` isn't initialized
--> $DIR/privately-uninhabited-mir-call.rs:28:5
|
LL | let y: &mut u32;
| - variable declared here
| - binding declared here but left uninitialized
...
LL | *y = 2;
| ^^^^^^ `y` used here but it isn't initialized