tree bb414340676f3be69376c088161a48941b971f7f
parent a8c8b627f23f204fb621bd2a8c495cfc8bc16ae7
author Joerg Sonnenberger <joerg@bec.de> 1585954082 +0200
committer Joerg Sonnenberger <joerg@bec.de> 1585957121 +0200

Avoid using std::max_align_t in pre-C++11 mode

Always depend on the compiler to have a correct implementation of
max_align_t in stddef.h and don't provide a fallback. For pre-C++11,
require __STDCPP_NEW_ALIGNMENT__ in <new> as provided by clang in all
standard modes. Adjust test cases to avoid testing or using max_align_t
in pre-C++11 mode and also to better deal with alignof(max_align_t)>16.
Document requirements of the alignment tests around natural alignment of
power-of-two-sized types.

Differential revision: https://reviews.llvm.org/D73245