7ffcd984c4
Patch by Arthur O'Dwyer. Reviewed as https://reviews.llvm.org/D47344 new_delete_resource().allocate(n, a) has basically two permissible results: * Return an appropriately sized and aligned block. * Throw bad_alloc. Before this patch, libc++'s new_delete_resource would do a third and impermissible thing, which was to return an appropriately sized but inappropriately under-aligned block. This is now fixed. (This came up while I was stress-testing unsynchronized_pool_resource on my MacBook. If we can't trust the default resource to return appropriately aligned blocks, pretty much everything breaks. For similar reasons, I would strongly support just patching __libcpp_allocate directly, but I don't care to die on that hill, so I made this patch as a <memory_resource>-specific workaround.) llvm-svn: 355763 |
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