Hi     Now that pretty printer is fixed (once patch validated) I'd like to propose this patch again.     Note that I'am adding a check on pretty printer with a std::any on a std::wstring. I did so because of the FIXME in printers.py which is dealing with 'std::string' explicitely. Looks like in my case, where there is no 'std::string' but just a 'std::__8::string' we do not need the workaround.     Once again I am attaching also the version namespace bump patch as I think that adopting the cxx11 abi in this mode is a good enough reason to bump it. If you agress let me know if I should squash the commits before pushing.     libstdc++: [_GLIBCXX_INLINE_VERSION] Use cxx11 abi     Use cxx11 abi when activating versioned namespace mode.     libstdcxx-v3/ChangeLog:             * acinclude.m4 [GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI]: Default to "new" libstdcxx abi.             * config/locale/dragonfly/monetary_members.cc [!_GLIBCXX_USE_DUAL_ABI]: Define money_base             members.             * config/locale/generic/monetary_members.cc [!_GLIBCXX_USE_DUAL_ABI]: Likewise.             * config/locale/gnu/monetary_members.cc [!_GLIBCXX_USE_DUAL_ABI]: Likewise.             * config/locale/gnu/numeric_members.cc             [!_GLIBCXX_USE_DUAL_ABI](__narrow_multibyte_chars): Define.             * configure: Regenerate.             * include/bits/c++config             [_GLIBCXX_INLINE_VERSION](_GLIBCXX_NAMESPACE_CXX11, _GLIBCXX_BEGIN_NAMESPACE_CXX11): Define             empty. [_GLIBCXX_INLINE_VERSION](_GLIBCXX_END_NAMESPACE_CXX11, _GLIBCXX_DEFAULT_ABI_TAG): Likewise.             * python/libstdcxx/v6/printers.py             (StdStringPrinter::__init__): Set self.new_string to True when std::__8::basic_string type is             found.             * src/Makefile.am [ENABLE_SYMVERS_GNU_NAMESPACE](ldbl_alt128_compat_sources): Define empty.             * src/Makefile.in: Regenerate.             * src/c++11/Makefile.am (cxx11_abi_sources): Rename into...             (dual_abi_sources): ...this, new. Also move several sources to...             (sources): ...this.             (extra_string_inst_sources): Move several sources to...             (inst_sources): ...this.             * src/c++11/Makefile.in: Regenerate.             * src/c++11/cow-fstream-inst.cc [_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++11/cow-locale_init.cc [_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++11/cow-sstream-inst.cc [_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++11/cow-stdexcept.cc [_GLIBCXX_USE_CXX11_ABI](error_category::_M_message):             Skip definition.             [_GLIBCXX_USE_CXX11_ABI]: Skip Transaction Memory TS definitions.             * src/c++11/cow-string-inst.cc [_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++11/cow-string-io-inst.cc [_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++11/cow-wstring-inst.cc [_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++11/cow-wstring-io-inst.cc [_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++11/cxx11-hash_tr1.cc [!_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++11/cxx11-ios_failure.cc [!_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             [!_GLIBCXX_USE_DUAL_ABI] (__ios_failure): Remove.             * src/c++11/cxx11-locale-inst.cc: Cleanup, just include locale-inst.cc.             * src/c++11/cxx11-stdexcept.cc [!_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             [!_GLIBCXX_USE_DUAL_ABI](__cow_string): Remove.             * src/c++11/cxx11-wlocale-inst.cc [!_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++11/fstream-inst.cc [!_GLIBCXX_USE_CXX11_ABI]: Skip definitions             * src/c++11/locale-inst-numeric.h [!_GLIBCXX_USE_DUAL_ABI](std::use_facet>, std::use_facet>): Instantiate. [!_GLIBCXX_USE_DUAL_ABI](std::has_facet>, std::has_facet>): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](std::num_get>): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](std::num_put>): Instantiate.             * src/c++11/locale-inst.cc [!_GLIBCXX_USE_DUAL_ABI]: Build only when configured             _GLIBCXX_USE_CXX11_ABI is equal to currently built abi.             [!_GLIBCXX_USE_DUAL_ABI](__moneypunct_cache): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](__moneypunct_cache): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](__numpunct_cache): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](__timepunct): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](__timepunct_cache): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](time_put>): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](time_put_byname>): Instantiate. [!_GLIBCXX_USE_DUAL_ABI](__ctype_abstract_base): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](ctype_byname): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](__codecvt_abstract_base): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](codecvt_byname): Instantiate. [!_GLIBCXX_USE_DUAL_ABI](use_facet>(const locale&)): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](use_facet>(const locale&)): Instantiate. [!_GLIBCXX_USE_DUAL_ABI](use_facet<__timepunct>(const locale&)): Instantiate. [!_GLIBCXX_USE_DUAL_ABI](use_facet>(const locale&)): Instantiate. [!_GLIBCXX_USE_DUAL_ABI](has_facet>(const locale&)): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](has_facet>(const locale&)): Instantiate. [!_GLIBCXX_USE_DUAL_ABI](has_facet<__timepunct>(const locale&)): Instantiate. [!_GLIBCXX_USE_DUAL_ABI](has_facet>(const locale&)): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](__add_grouping): Define.             [!_GLIBCXX_USE_DUAL_ABI](__pad>): Instantiate.             [!_GLIBCXX_USE_DUAL_ABI](__int_to_char(C*, unsigned long, const C*, ios_base::fmtflags, bool)):             Define.             [!_GLIBCXX_USE_DUAL_ABI](__int_to_char(C*, unsigned long long, const C*, ios_base::fmtflags, bool)):             Define.             * src/c++11/cxx11-wlocale-inst.cc [!_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++98/Makefile.am (cxx11_abi_sources): Remove, unique cow-istream-string.cc entry move to...             (inst_sources): ...this.             * src/c++98/Makefile.in: Regenerate.             * src/c++98/cow-istream-string.cc: Include .             [_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++98/hash_tr1.cc [_GLIBCXX_USE_CXX11_ABI]: Skip definitions.             * src/c++98/ios_failure.cc [_GLIBCXX_USE_CXX11_ABI][_GLIBCXX_USE_DUAL_ABI]: Skip definitions.             * src/c++98/istream-string.cc [!_GLIBCXX_USE_DUAL_ABI]: Build only when configured             _GLIBCXX_USE_CXX11_ABI is equal to currently built abi.             * src/c++98/locale_facets.cc [_GLIBCXX_USE_CXX11_ABI](__verify_grouping): Remove.             * src/c++98/stdexcept.cc             [_GLIBCXX_USE_CXX11_ABI](logic_error(const string&): Remove.             [_GLIBCXX_USE_CXX11_ABI](domain_error(const string&): Remove.             [_GLIBCXX_USE_CXX11_ABI](invalid_argument(const string&): Remove.             [_GLIBCXX_USE_CXX11_ABI](length_error(const string&): Remove.             [_GLIBCXX_USE_CXX11_ABI](out_of_range(const string&): Remove.             [_GLIBCXX_USE_CXX11_ABI](runtime_error(const string&): Remove.             [_GLIBCXX_USE_CXX11_ABI](range_error(const string&): Remove.             [_GLIBCXX_USE_CXX11_ABI](overflow_error(const string&): Remove.             [_GLIBCXX_USE_CXX11_ABI](underflow_error(const string&): Remove.             * testsuite/libstdc++-prettyprinters/cxx17.cc: Add std::any check with std::wstring. François On 30/05/22 22:58, François Dumont wrote: > Hi > > Here is the patch to use cxx11 abi for the versioned namespace mode. > > It is still suffering from a side effect on gdb pretty printers with 3 > errors like: > > got: type = > std::unique_ptr std::__8::char_traits, std::__8::allocator >>[]>>[99]> > FAIL: libstdc++-prettyprinters/80276.cc whatis p4 > > However once I apply the version bump errors are gone. > > Let me know if it is ok to apply all at once or if you prefer to avoid > the version bump. > > François