[PATCH] Add new diagnostic to check for bad member function calls in mem-initializer-lists.

[Emily Bellows]

Hi rsmith,

Hi,

This patch adds a new diagnostic that checks for member function calls before all base classes in a mem-initializer-list are initialized, which is undefined behavior. (C++03 12.6.2p8; C++11 12.6.2p13.)

The added code looks for member call expressions which use implicit or explicit 'this' inside of the arguments of a base class initializer to signal the warning.

http://reviews.llvm.org/D6561

Files:
  include/clang/Basic/DiagnosticSemaKinds.td
  lib/Sema/SemaDeclCXX.cpp
  test/SemaCXX/member-call-before-bases-init.cpp
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