https://gcc.gnu.org/bugzilla/show_bug.cgi?id=85222
--- Comment #22 from Jonathan Wakely <redi at gcc dot gnu.org> --- Author: redi Date: Thu Apr 12 19:06:50 2018 New Revision: 259352 URL: https://gcc.gnu.org/viewcvs?rev=259352&root=gcc&view=rev Log: PR libstdc++/85222 allow catching iostream errors as gcc4-compatible ios::failure 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. Backport from mainline 2018-04-10 Jonathan Wakely <jwak...@redhat.com> 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. (_GLIBCXX_USE_CXX11_ABI): Don't define here. * 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. Added: branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/ios_base/failure/dual_abi.cc Modified: branches/gcc-7-branch/libstdc++-v3/ChangeLog branches/gcc-7-branch/libstdc++-v3/src/c++11/Makefile.am branches/gcc-7-branch/libstdc++-v3/src/c++11/Makefile.in branches/gcc-7-branch/libstdc++-v3/src/c++11/cxx11-ios_failure.cc branches/gcc-7-branch/libstdc++-v3/src/c++11/ios.cc branches/gcc-7-branch/libstdc++-v3/src/c++98/ios_failure.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/basic_ios/copyfmt/char/1.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/basic_ios/exceptions/char/1.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/char/exceptions_failbit.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/exceptions_failbit.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/basic_istream/extractors_other/char/exceptions_null.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/basic_istream/extractors_other/wchar_t/exceptions_null.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/basic_istream/sentry/char/12297.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/basic_istream/sentry/wchar_t/12297.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/char/exceptions_null.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/basic_ostream/inserters_other/wchar_t/exceptions_null.cc branches/gcc-7-branch/libstdc++-v3/testsuite/27_io/ios_base/storage/2.cc
