GCC modified for the FreeChainXenon project
aa475c4ac8
This implements the resolution of LWG 1203 so that the constraints for rvalue stream insertion/extraction are simpler, and the return type is the original rvalue stream type not its base class. Signed-off-by: Jonathan Wakely <jwakely@redhat.com> libstdc++-v3/ChangeLog: * include/std/istream (operator>>(Istream&&, x&)): Simplify, as per LWG 1203. * include/std/ostream (operator<<(Ostream&&, const x&)): Likewise. * testsuite/27_io/basic_istream/extractors_character/char/lwg2499_neg.cc: Adjust dg-error pattern. * testsuite/27_io/basic_istream/extractors_character/wchar_t/lwg2499_neg.cc: Likewise. * testsuite/27_io/basic_istream/extractors_other/char/4.cc: Define is_extractable trait to replace std::__is_extractable. Make it work with rvalue streams as well as lvalues, to replace f() and g() helper functions. * testsuite/27_io/basic_istream/extractors_other/wchar_t/4.cc: Likewise. * testsuite/27_io/basic_ostream/inserters_other/char/6.cc: Define is_insertable trait to replace std::__is_insertable. Make it work with rvalue streams as well as lvalues, to replace f() and g() helper functions. * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc: Likewise. * testsuite/27_io/filesystem/path/io/dr2989.cc: Prune additional errors from new constraints. * testsuite/27_io/rvalue_streams-2.cc: Remove PR 80675 checks, which are no longer expected to compile. * testsuite/27_io/rvalue_streams.cc: Adjust existing test. Verify LWG 1203 changes. |
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