On Tue, 10 Apr 2018, Jonathan Wakely wrote: > Define a new exception type derived from std::ios::failure[abi:cxx11] > which also aggregates an object of the gcc4-compatible ios::failure > type. Make __throw_ios_failure throw this new type for iostream errors > that raise exceptions. Provide custom type info for the new type so that > it can be caught by handlers for the gcc4-compatible ios::failure type > as well as handlers for ios::failure[abi:cxx11] and its bases. > > PR libstdc++/85222 > * src/c++11/Makefile.am [ENABLE_DUAL_ABI]: Add special rules for > cxx11-ios_failure.cc to rewrite type info for __ios_failure. > * src/c++11/Makefile.in: Regenerate. > * src/c++11/cxx11-ios_failure.cc (__ios_failure, __iosfail_type_info): > New types. > [_GLIBCXX_USE_DUAL_ABI] (__throw_ios_failure): Define here. > * src/c++11/ios.cc (__throw_ios_failure): Remove definition. > * src/c++98/ios_failure.cc (__construct_ios_failure) > (__destroy_ios_failure, is_ios_failure_handler): New functions. > [!_GLIBCXX_USE_DUAL_ABI] (__throw_ios_failure): Define here. > * testsuite/27_io/ios_base/failure/dual_abi.cc: New. > * testsuite/27_io/basic_ios/copyfmt/char/1.cc: Revert changes to > handler types, to always catch std::ios_base::failure. > * testsuite/27_io/basic_ios/exceptions/char/1.cc: Likewise. > * testsuite/27_io/basic_istream/extractors_arithmetic/char/ > exceptions_failbit.cc: Likewise. > * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/ > exceptions_failbit.cc: Likewise. > * testsuite/27_io/basic_istream/extractors_other/char/ > exceptions_null.cc: Likewise. > * testsuite/27_io/basic_istream/extractors_other/wchar_t/ > exceptions_null.cc: Likewise. > * testsuite/27_io/basic_istream/sentry/char/12297.cc: Likewise. > * testsuite/27_io/basic_istream/sentry/wchar_t/12297.cc: Likewise. > * testsuite/27_io/basic_ostream/inserters_other/char/ > exceptions_null.cc: Likewise. > * testsuite/27_io/basic_ostream/inserters_other/wchar_t/ > exceptions_null.cc: Likewise. > * testsuite/27_io/ios_base/storage/2.cc: Likewise. > > Tested x86_64-linux and powerpc64-linux, with the default config, and > --disable-libstdcxx-dual-abi, and > --with-default-libstdcxx-abi=gcc4-compatible. I intend to commit this > to trunk and gcc-7-branch soon.
Thanks for working on this! Richard.
