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Add note about pointer state after the call. #23561

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Merged
bors merged 1 commit into from
Mar 24, 2015
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Add note about pointer state after the call. #23561

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3 changes: 3 additions & 0 deletions src/liballoc/heap.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -26,6 +26,9 @@ pub unsafe fn allocate(size: usize, align: usize) -> *mut u8 {
///
/// On failure, return a null pointer and leave the original allocation intact.
///
/// If the allocation was relocated, the memory at the passed-in pointer is
/// undefined after the call.
///
/// Behavior is undefined if the requested size is 0 or the alignment is not a
/// power of 2. The alignment must be no larger than the largest supported page
/// size on the platform.
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