r247978 - in /branches/gcc-7-branch/libstdc++-v...

[redi@gcc.gnu.org]

Author: redi
Date: Fri May 12 15:53:19 2017
New Revision: 247978

URL: https://gcc.gnu.org/viewcvs?rev=247978&root=gcc&view=rev
Log:
PR libstdc++/78939 make tuple_size<cv T> depend on tuple_size<T>

	PR libstdc++/78939
	* include/std/utility (tuple_size<cv T>) [__cplusplus > 201402L]:
	Only define partial specializations when tuple_size<T>::value is
	valid.
	* testsuite/20_util/tuple/78939.cc: New.

Added:
    branches/gcc-7-branch/libstdc++-v3/testsuite/20_util/tuple/78939.cc
Modified:
    branches/gcc-7-branch/libstdc++-v3/ChangeLog
    branches/gcc-7-branch/libstdc++-v3/include/std/utility