r255124 - in /trunk/libstdc++-v3: ChangeLog inc...

[redi@gcc.gnu.org]

Author: redi
Date: Thu Nov 23 22:11:21 2017
New Revision: 255124

URL: https://gcc.gnu.org/viewcvs?rev=255124&root=gcc&view=rev
Log:
Add [[nodiscard]] attribute to C++17 components

	* include/bits/fs_path.h (path::empty): Add nodiscard attribute.
	* include/bits/range_access.h (empty): Likewise.
	* include/std/string_view (basic_string_view::empty): Likewise.
	* testsuite/21_strings/basic_string_view/capacity/empty_neg.cc: New
	test.
	* testsuite/24_iterators/range_access_cpp17_neg.cc: New test.
	* testsuite/27_io/filesystem/path/query/empty_neg.cc: New test.

Added:
    trunk/libstdc++-v3/testsuite/21_strings/basic_string_view/capacity/empty_neg.cc
    trunk/libstdc++-v3/testsuite/24_iterators/range_access_cpp17_neg.cc
    trunk/libstdc++-v3/testsuite/27_io/filesystem/path/query/empty_neg.cc
Modified:
    trunk/libstdc++-v3/ChangeLog
    trunk/libstdc++-v3/include/bits/fs_path.h
    trunk/libstdc++-v3/include/bits/node_handle.h
    trunk/libstdc++-v3/include/bits/range_access.h
    trunk/libstdc++-v3/include/std/string_view