r238924 - in /trunk/libstdc++-v3: ChangeLog inc...

[redi@gcc.gnu.org]

Author: redi
Date: Sun Jul 31 17:08:52 2016
New Revision: 238924

URL: https://gcc.gnu.org/viewcvs?rev=238924&root=gcc&view=rev
Log:
libstdc++/72745 add static assertion for invalid tuple access

	PR libstdc++/72745
	* include/std/array (get): Use positive message for static assertions.
	* include/std/functional (_Safe_tuple_element_t): Fix indentation.
	* include/std/tuple (tuple_element<I, tuple<>>): Add partial
	specialization for invalid indices, with static assertion.
	* testsuite/20_util/tuple/element_access/get_neg.cc: New test.

Added:
    trunk/libstdc++-v3/testsuite/20_util/tuple/element_access/get_neg.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/std/array
    trunk/libstdc++-v3/include/std/functional
    trunk/libstdc++-v3/include/std/tuple