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Author SHA1 Message Date
Richard Smith
21e8bb8325 PR48606: The lifetime of a constexpr heap allocation always started 
during the same evaluation.

It looks like the only case for which this matters is determining
whether mutable subobjects of a heap allocation can be modified during
constant evaluation.
 2021-02-08 17:58:05 -08:00
Richard Smith
e381f33651 PR43629: Fix crash evaluating constexpr placement new on a subobject of 
an out-of-lifetime object.

llvm-svn: 374465
 2019-10-10 22:31:17 +00:00
Richard Smith
b542602c5f For P0784R7: support placement new-expressions in constant evaluation. 
For now, we restrict this support to use from within the standard
library implementation, since we're required to make parts of the
standard library that use placement new work, but not permitted to
make uses of placement new from user code work.

llvm-svn: 373547
 2019-10-03 00:39:35 +00:00
Richard Smith
19ad523971 For P0784R7: allow direct calls to operator new / operator delete from 
std::allocator::{allocate,deallocate} in constant evaluation.

llvm-svn: 373546
 2019-10-03 00:39:33 +00:00