[PATCH] D50291: [C++] Delay checking of constexpr-ness for special members.

[Nicolas Lesser via Phabricator via cfe-commits]

Rakete1111 created this revision.
Rakete1111 added a reviewer: rsmith.

Specific class layouts meant that the constexpr-ness of a special member could only be decided after every special member was seen. However, this was at odds with the implementation, which checked the constexpr-ness for each special member in the order in which they were declared (hence that the bug only occurs when special members are ordered in a specific order).

This patch moves the checking of constexpr-ness after evaluating each special member.
This fixes https://llvm.org/pr38143


Repository:
  rC Clang

https://reviews.llvm.org/D50291

Files:
  include/clang/Sema/Sema.h
  lib/Sema/SemaDeclCXX.cpp

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