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Auto merge of #84082 - andjo403:stabilize_nonzero_leading_trailing_zeros, r=m-ou-se

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Stabilize nonzero_leading_trailing_zeros

Stabilizing nonzero_leading_trailing_zeros and due to this also stabilizing the intrinsic cttz_nonzero

FCP finished here: https://github.com/rust-lang/rust/issues/79143#issuecomment-817216153
`@rustbot` modify labels: +T-libs

Closes #79143
This commit is contained in:
bors 2021-04-13 03:18:10 +00:00
commit 7ce470fd9b
6 changed files with 37 additions and 10 deletions
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9
src/test/ui/consts/const-int-unchecked.rs
View file

@ -186,4 +186,13 @@ const _: i32 = unsafe { std::intrinsics::unchecked_rem(i32::MIN, -1) };
//~^ ERROR any use of this value will cause an error
//~| WARN this was previously accepted by the compiler but is being phased out
// capture fault with zero value
const _: u32 = unsafe { std::intrinsics::ctlz_nonzero(0) };
//~^ ERROR any use of this value will cause an error
//~| WARN this was previously accepted by the compiler but is being phased out
const _: u32 = unsafe { std::intrinsics::cttz_nonzero(0) };
//~^ ERROR any use of this value will cause an error
//~| WARN this was previously accepted by the compiler but is being phased out
fn main() {}

24
src/test/ui/consts/const-int-unchecked.stderr
View file

@ -516,5 +516,27 @@ LL | const _: i32 = unsafe { std::intrinsics::unchecked_rem(i32::MIN, -1) };
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
error: aborting due to 47 previous errors
error: any use of this value will cause an error
--> $DIR/const-int-unchecked.rs:191:25
|
LL | const _: u32 = unsafe { std::intrinsics::ctlz_nonzero(0) };
| ------------------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^---
| |
| `ctlz_nonzero` called on 0
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
error: any use of this value will cause an error
--> $DIR/const-int-unchecked.rs:194:25
|
LL | const _: u32 = unsafe { std::intrinsics::cttz_nonzero(0) };
| ------------------------^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^---
| |
| `cttz_nonzero` called on 0
|
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #71800 <https://github.com/rust-lang/rust/issues/71800>
error: aborting due to 49 previous errors