dnrops
/
rust
mirror of https://github.com/rust-lang/rust.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

More tests for invalid_value lint

This commit is contained in:
5225225 2022-07-05 08:50:42 +01:00
parent 57ddb2d02e
commit 73a30f8d8b
2 changed files with 49 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

9
src/test/ui/lint/uninitialized-zeroed.rs
View File

@ -103,6 +103,15 @@ fn main() {
let _val: i32 = mem::zeroed();
let _val: i32 = mem::uninitialized(); //~ ERROR: does not permit being left uninitialized
let _val: f32 = mem::zeroed();
let _val: f32 = mem::uninitialized(); //~ ERROR: does not permit being left uninitialized
let _val: *const () = mem::zeroed();
let _val: *const () = mem::uninitialized(); //~ ERROR: does not permit being left uninitialized
let _val: *const [()] = mem::zeroed();
let _val: *const [()] = mem::uninitialized(); //~ ERROR: does not permit being left uninitialized
// Transmute-from-0
let _val: &'static i32 = mem::transmute(0usize); //~ ERROR: does not permit zero-initialization
let _val: &'static [i32] = mem::transmute((0usize, 0usize)); //~ ERROR: does not permit zero-initialization

47
src/test/ui/lint/uninitialized-zeroed.stderr
View File

@ -425,8 +425,41 @@ LL | let _val: i32 = mem::uninitialized();
|
= note: integers must not be uninitialized
error: the type `f32` does not permit being left uninitialized
--> $DIR/uninitialized-zeroed.rs:107:25
|
LL | let _val: f32 = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: floats must not be uninitialized
error: the type `*const ()` does not permit being left uninitialized
--> $DIR/uninitialized-zeroed.rs:110:31
|
LL | let _val: *const () = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: raw pointers must not be uninitialized
error: the type `*const [()]` does not permit being left uninitialized
--> $DIR/uninitialized-zeroed.rs:113:33
|
LL | let _val: *const [()] = mem::uninitialized();
| ^^^^^^^^^^^^^^^^^^^^
| |
| this code causes undefined behavior when executed
| help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
|
= note: raw pointers must not be uninitialized
error: the type `&i32` does not permit zero-initialization
--> $DIR/uninitialized-zeroed.rs:107:34
--> $DIR/uninitialized-zeroed.rs:116:34
|
LL | let _val: &'static i32 = mem::transmute(0usize);
| ^^^^^^^^^^^^^^^^^^^^^^
@ -437,7 +470,7 @@ LL | let _val: &'static i32 = mem::transmute(0usize);
= note: references must be non-null
error: the type `&[i32]` does not permit zero-initialization
--> $DIR/uninitialized-zeroed.rs:108:36
--> $DIR/uninitialized-zeroed.rs:117:36
|
LL | let _val: &'static [i32] = mem::transmute((0usize, 0usize));
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -448,7 +481,7 @@ LL | let _val: &'static [i32] = mem::transmute((0usize, 0usize));
= note: references must be non-null
error: the type `NonZeroU32` does not permit zero-initialization
--> $DIR/uninitialized-zeroed.rs:109:32
--> $DIR/uninitialized-zeroed.rs:118:32
|
LL | let _val: NonZeroU32 = mem::transmute(0);
| ^^^^^^^^^^^^^^^^^
@ -459,7 +492,7 @@ LL | let _val: NonZeroU32 = mem::transmute(0);
= note: `std::num::NonZeroU32` must be non-null
error: the type `NonNull<i32>` does not permit zero-initialization
--> $DIR/uninitialized-zeroed.rs:112:34
--> $DIR/uninitialized-zeroed.rs:121:34
|
LL | let _val: NonNull<i32> = MaybeUninit::zeroed().assume_init();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -470,7 +503,7 @@ LL | let _val: NonNull<i32> = MaybeUninit::zeroed().assume_init();
= note: `std::ptr::NonNull<i32>` must be non-null
error: the type `NonNull<i32>` does not permit being left uninitialized
--> $DIR/uninitialized-zeroed.rs:113:34
--> $DIR/uninitialized-zeroed.rs:122:34
|
LL | let _val: NonNull<i32> = MaybeUninit::uninit().assume_init();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -481,7 +514,7 @@ LL | let _val: NonNull<i32> = MaybeUninit::uninit().assume_init();
= note: `std::ptr::NonNull<i32>` must be non-null
error: the type `bool` does not permit being left uninitialized
--> $DIR/uninitialized-zeroed.rs:114:26
--> $DIR/uninitialized-zeroed.rs:123:26
|
LL | let _val: bool = MaybeUninit::uninit().assume_init();
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
@ -491,5 +524,5 @@ LL | let _val: bool = MaybeUninit::uninit().assume_init();
|
= note: booleans must be either `true` or `false`
error: aborting due to 40 previous errors
error: aborting due to 43 previous errors