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Make the lifetime anchor immutable on std::mem::copy_mut_lifetime #21976

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Merged
merged 1 commit into from
Feb 7, 2015
Merged

Make the lifetime anchor immutable on std::mem::copy_mut_lifetime #21976

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7 changes: 4 additions & 3 deletions src/libcore/mem.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -331,8 +331,9 @@ pub unsafe fn copy_lifetime<'a, S: ?Sized, T: ?Sized + 'a>(_ptr: &'a S,
#[unstable(feature = "core",
reason = "this function may be removed in the future due to its \
questionable utility")]
pub unsafe fn copy_mut_lifetime<'a, S: ?Sized, T: ?Sized + 'a>(_ptr: &'a mut S,
ptr: &mut T)
-> &'a mut T {
pub unsafe fn copy_mut_lifetime<'a, S: ?Sized, T: ?Sized + 'a>(_ptr: &'a S,
ptr: &mut T)
-> &'a mut T
{
transmute(ptr)
}