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authorbors <bors@rust-lang.org>2021-01-19 08:59:37 +0000
committerbors <bors@rust-lang.org>2021-01-19 08:59:37 +0000
commit47121d6d884bb60dad47e345f52f2ad6aadecaaf (patch)
treeec79f7cc389fcaad1402c0a7f8880c8779323ec8 /compiler/rustc_llvm/llvm-wrapper/RustWrapper.cpp
parent7d7b22d78fa71cf18109dc9d186611f2ddf60d8e (diff)
parent2136a5cfad69337222b5b02f934825e5d346f9ca (diff)
downloadrust-47121d6d884bb60dad47e345f52f2ad6aadecaaf.tar.gz
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Auto merge of #81110 - LeSeulArtichaut:fix-unused-unsafe-label, r=RalfJung
Fix `unused_unsafe` label with `unsafe_block_in_unsafe_fn

Previously, the following code:

```rust
#![feature(unsafe_block_in_unsafe_fn)]

unsafe fn foo() {
    unsafe { unsf() }
}

unsafe fn unsf() {}
```

Would give the following warning:

```
warning: unnecessary `unsafe` block
 --> src/lib.rs:4:5
  |
4 |     unsafe { unsf() }
  |     ^^^^^^ unnecessary `unsafe` block
  |
  = note: `#[warn(unused_unsafe)]` on by default
```
which doesn't point out that the block is in an `unsafe fn`.

Tracking issue: #71668
cc #79208
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