Bug 942313 – dev-cpp/glibmm-2.78.1: fails to build with clang-19: error: implicit instantiation of undefined template 'std::char_traits<unsigned char>'

• Status: UNCONFIRMED
• Product: Gentoo Linux

[Description Blacktea Hamburger 2024-10-27 04:18:42 UTC]

Created attachment 906945 [details]
emerge --info

[216/220] clang++ -Igio/giomm/libgiomm-2.68.so.1.3.0.p -Igio -I../glibmm-2.78.1/gio -I../glibmm-2.78.1/untracked/gio -Iglib -I../glibmm-2.78.1/glib -I../glibmm-2.78.1/untracked/glib -I/usr/include/sigc++-3.0 -I/usr/lib64/sigc++-3.0/include -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/lib64/libffi/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/gio-unix-2.0 -fdiagnostics-color=always -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_FAST -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -std=c++17 -march=native -O2 -pipe -fPIC -pthread -DGIOMM_BUILD=1 -MD -MQ gio/giomm/libgiomm-2.68.so.1.3.0.p/contenttype.cc.o -MF gio/giomm/libgiomm-2.68.so.1.3.0.p/contenttype.cc.o.d -o gio/giomm/libgiomm-2.68.so.1.3.0.p/contenttype.cc.o -c ../glibmm-2.78.1/gio/giomm/contenttype.cc
FAILED: gio/giomm/libgiomm-2.68.so.1.3.0.p/contenttype.cc.o 
clang++ -Igio/giomm/libgiomm-2.68.so.1.3.0.p -Igio -I../glibmm-2.78.1/gio -I../glibmm-2.78.1/untracked/gio -Iglib -I../glibmm-2.78.1/glib -I../glibmm-2.78.1/untracked/glib -I/usr/include/sigc++-3.0 -I/usr/lib64/sigc++-3.0/include -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/lib64/libffi/include -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/gio-unix-2.0 -fdiagnostics-color=always -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_FAST -D_FILE_OFFSET_BITS=64 -Wall -Winvalid-pch -std=c++17 -march=native -O2 -pipe -fPIC -pthread -DGIOMM_BUILD=1 -MD -MQ gio/giomm/libgiomm-2.68.so.1.3.0.p/contenttype.cc.o -MF gio/giomm/libgiomm-2.68.so.1.3.0.p/contenttype.cc.o.d -o gio/giomm/libgiomm-2.68.so.1.3.0.p/contenttype.cc.o -c ../glibmm-2.78.1/gio/giomm/contenttype.cc
In file included from ../glibmm-2.78.1/gio/giomm/contenttype.cc:17:
In file included from ../glibmm-2.78.1/gio/giomm/contenttype.h:19:
In file included from ../glibmm-2.78.1/glib/glibmm/ustring.h:29:
In file included from /usr/include/c++/v1/sstream:317:
In file included from /usr/include/c++/v1/__ostream/basic_ostream.h:16:
In file included from /usr/include/c++/v1/__system_error/error_code.h:18:
In file included from /usr/include/c++/v1/__system_error/error_category.h:15:
/usr/include/c++/v1/string:820:42: error: implicit instantiation of undefined template 'std::char_traits<unsigned char>'
  820 |   static_assert(is_same<_CharT, typename traits_type::char_type>::value,
      |                                          ^
../glibmm-2.78.1/gio/giomm/contenttype.cc:93:57: note: in instantiation of template class 'std::basic_string<unsigned char>' requested here
   93 |   gchar* cresult = g_content_type_guess(c_filename, data.c_str(), data.size(), &c_result_uncertain);
      |                                                         ^
/usr/include/c++/v1/__fwd/string.h:23:29: note: template is declared here
   23 | struct _LIBCPP_TEMPLATE_VIS char_traits;
      |                             ^
1 error generated.

[Comment 1 Blacktea Hamburger 2024-10-27 04:19:07 UTC]

Created attachment 906946 [details]
build.log

[Comment 2 Fabio Scaccabarozzi 2024-11-05 13:12:23 UTC]

I applied this commit from upstream: https://gitlab.gnome.org/GNOME/glibmm/-/commit/72c5ad98d858fa4fc0183a5ec1a61bb48ef5bd95 (referenced in issue: https://gitlab.gnome.org/GNOME/glibmm/-/issues/118 ) and I can compile successfully with clang-19.

This is the patch I dropped in /etc/portage/patches: https://github.com/fsvm88/gentoo-portage_etc/blob/main/patches/dev-cpp/glibmm%3A2.68/72c5ad98d858fa4fc0183a5ec1a61bb48ef5bd95.patch

[Comment 3 Holger Hoffstätte 2025-03-28 13:59:32 UTC]

*** Bug 942877 has been marked as a duplicate of this bug. ***