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| author | joboet <jonasboettiger@icloud.com> | 2025-01-10 18:48:48 +0100 |
|---|---|---|
| committer | joboet <jonasboettiger@icloud.com> | 2025-01-10 18:48:48 +0100 |
| commit | 4426e9a3c260e329f51c94e2b231f72574271f0b (patch) | |
| tree | 5e951ec52413e97fde47b94bc51089ae20378dcc /library/alloc/src | |
| parent | 336209eef13882bd1e211b24779584cb7ef911eb (diff) | |
| download | rust-4426e9a3c260e329f51c94e2b231f72574271f0b.tar.gz rust-4426e9a3c260e329f51c94e2b231f72574271f0b.zip | |
alloc: remove unsound `IsZero` for raw pointers
Fixes #135338
Diffstat (limited to 'library/alloc/src')
| -rw-r--r-- | library/alloc/src/vec/is_zero.rs | 15 |
1 files changed, 2 insertions, 13 deletions
diff --git a/library/alloc/src/vec/is_zero.rs b/library/alloc/src/vec/is_zero.rs index ba57d940d8c..a3ddd6f6e23 100644 --- a/library/alloc/src/vec/is_zero.rs +++ b/library/alloc/src/vec/is_zero.rs @@ -40,19 +40,8 @@ impl_is_zero!(char, |x| x == '\0'); impl_is_zero!(f32, |x: f32| x.to_bits() == 0); impl_is_zero!(f64, |x: f64| x.to_bits() == 0); -unsafe impl<T> IsZero for *const T { - #[inline] - fn is_zero(&self) -> bool { - (*self).is_null() - } -} - -unsafe impl<T> IsZero for *mut T { - #[inline] - fn is_zero(&self) -> bool { - (*self).is_null() - } -} +// `IsZero` cannot be soundly implemented for pointers because of provenance +// (see #135338). unsafe impl<T: IsZero, const N: usize> IsZero for [T; N] { #[inline] |