PR libstdc++/64203
	* include/std/shared_mutex: Fix preprocessor conditions.
	* testsuite/experimental/feat-cxx14.cc: Check conditions.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218511 138bc75d-0d04-0410-961f-82ee72b054a4
2014-12-09  Richard Biener  <rguenther@suse.de>

	PR middle-end/64199
	* fold-const.c (fold_binary_loc): Use TREE_OVERFLOW_P.

	* gcc.dg/torture/pr64199.c: New testcase.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@218513 138bc75d-0d04-0410-961f-82ee72b054a4