r271789 - in /trunk/libstdc++-v3: ChangeLog inc...

[redi@gcc.gnu.org]

Author: redi
Date: Thu May 30 19:48:48 2019
New Revision: 271789

URL: https://gcc.gnu.org/viewcvs?rev=271789&root=gcc&view=rev
Log:
LWG2788 basic_string spurious use of a default constructible allocator

This only change the cxx11 basic_string, because COW strings don't
correctly propagate allocators anyway.

2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>

	LWG2788 basic_string spurious use of a default constructible allocator
	* include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
	(basic_string::_M_replace_dispatch): Construct temporary string with
	the current allocator.
	* testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
	* testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.

Added:
    trunk/libstdc++-v3/testsuite/21_strings/basic_string/allocator/char/lwg2788.cc
    trunk/libstdc++-v3/testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/basic_string.tcc