https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114275
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |rejects-valid --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- In file included from /home/apinski/upstream-gcc-match/include/c++/14.0.1/bits/std_thread.h:39, from /home/apinski/upstream-gcc-match/include/c++/14.0.1/stop_token:40, from /home/apinski/upstream-gcc-match/include/c++/14.0.1/thread:42, from A.ixx:4, of module A, imported at main.cpp:2: /home/apinski/upstream-gcc-match/include/c++/14.0.1/tuple: In instantiation of ‘struct std::_Tuple_impl@A<0, fun@A<int>(int&&)::<lambda()> >’: /home/apinski/upstream-gcc-match/include/c++/14.0.1/tuple:834:11: required from ‘class std::tuple@A<fun@A<int>(int&&)::<lambda()> >’ 834 | class tuple : public _Tuple_impl<0, _Elements...> | ^~~~~ /home/apinski/upstream-gcc-match/include/c++/14.0.1/bits/std_thread.h:280:9: required from ‘struct std::thread@A::_Invoker<std::tuple@A<fun@A<int>(int&&)::<lambda()> > >’ 280 | _Tuple _M_t; | ^~~~ /home/apinski/upstream-gcc-match/include/c++/14.0.1/bits/std_thread.h:236:13: required from ‘struct std::thread@A::_State_impl<std::thread@A::_Invoker<std::tuple@A<fun@A<int>(int&&)::<lambda()> > > >’ 236 | _Callable _M_func; | ^~~~~~~ /home/apinski/upstream-gcc-match/include/c++/14.0.1/bits/std_thread.h:164:29: required from ‘std::thread@A::thread(_Callable&&, _Args&& ...) [with _Callable = fun@A<int>(int&&)::<lambda()>; _Args = {}; <template-parameter-1-3> = void]’ 164 | _M_start_thread(_State_ptr(new _State_impl<_Wrapper>( | ^~~~~~~~~~~~~~~~~~~~~~~~~~ 165 | std::forward<_Callable>(__f), std::forward<_Args>(__args)...)), | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ A.ixx:10:8: required from ‘void fun@A(auto:38&&) [with auto:38 = int]’ 10 | std::thread([]{}).join(); | ^~~~~~~~~~~~ main.cpp:6:6: required from here 6 | fun(42); | ~~~^~~~ /home/apinski/upstream-gcc-match/include/c++/14.0.1/tuple:551:51: error: conflicting declaration of template ‘template<long unsigned int <anonymous>, class ...> struct std::_Tuple_impl’ 551 | template<size_t, typename...> friend struct _Tuple_impl; | ^~~~~~~~~~~