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If you prick a code block, does it not bleed?

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Manish Goregaokar 2015-06-25 13:53:05 +05:30
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@ -444,7 +444,7 @@ end = ptr.offset(len)
However because `offset` is marked as a GEP inbounds instruction, this will tell
LLVM that ptr is allocated and won't alias other allocated memory. This is fine
for zero-sized types, as they can't alias anything. However if we're using
heap::EMPTY as a sentinel for a non-allocation for a *non-zero-sized* type,
`heap::EMPTY` as a sentinel for a non-allocation for a *non-zero-sized* type,
this can cause undefined behaviour. Alas, we must therefore special case either
cap or len being 0 to not do the offset.