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alloc_system: Handle failure properly

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The Unix implementation was incorrectly handling failure for reallocation of
over-aligned types by not checking for NULL.

Closes #32993
This commit is contained in:
Alex Crichton 2016-04-15 10:02:21 -07:00
parent 74b3684d00
commit 99c0547854
1 changed files with 4 additions and 2 deletions
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6
src/liballoc_system/lib.rs
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@ -96,8 +96,10 @@ mod imp {
libc::realloc(ptr as *mut libc::c_void, size as libc::size_t) as *mut u8
} else {
let new_ptr = allocate(size, align);
ptr::copy(ptr, new_ptr, cmp::min(size, old_size));
deallocate(ptr, old_size, align);
if !new_ptr.is_null() {
ptr::copy(ptr, new_ptr, cmp::min(size, old_size));
deallocate(ptr, old_size, align);
}
new_ptr
}
}