re PR libstdc++/58163 ([C++11] Pedantic assert on str[str.size()] is wrong in C++11)

re PR libstdc++/58163 ([C++11] Pedantic assert on str[str.size()] is wrong in C++11)

2013-08-14  Paolo Carlini  <paolo.carlini@oracle.com>

	PR libstdc++/58163
	* include/bits/basic_string.h (basic_string<>::operator[]): Fix
	_GLIBCXX_DEBUG_PEDASSERT check vs C++11.
	* include/ext/vstring.h: Likewise.
	* testsuite/21_strings/basic_string/element_access/char/58163.cc:
	New.
	* testsuite/21_strings/basic_string/element_access/wchar_t/58163.cc:
	Likewise.
	* testsuite/ext/vstring/element_access/char/58163.cc: Likewise.
	* testsuite/ext/vstring/element_access/wchar_t/58163.cc: Likewise.

From-SVN: r201755