https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107037
Bug ID: 107037 Summary: 541.leela_r compiling fail since r13-2779 Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: libstdc++ Assignee: unassigned at gcc dot gnu.org Reporter: guojiufu at gcc dot gnu.org Target Milestone: --- When building 541.leela_r from spec2017, I encounter one error: include/c++/13.0.0/bitset: In instantiation of 'void std::_Base_bitset<_Nw>::_M_do_reset() [with long unsigned int _Nw = 7]': include/c++/13.0.0/bitset:1145:19: required from 'std::bitset<_Nb>& std::bitset<_Nb>::reset() [with long unsigned int _Nb = 441]' Playout.cpp:20:18: required from here include/c++/13.0.0/bitset:187:13: error: forming reference to reference type 'long unsigned int (&)[7]' 187 | for (_WordT& __w : _M_w) | ^~~ The command is g++ -std=c++03 -m64 -c -o Playout.o -DSPEC -DNDEBUG -I. -DSPEC_AUTO_SUPPRESS_OPENMP -Ofast -DSPEC_LP64 Playout.cpp This issue is also reproducible on -O3 or -O2. It seems compiling fine before commit r13-2779-9194c13909b72d23e58fee72864a2663b12f6b19.