https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100599
Bug ID: 100599 Summary: internal compiler error: Segmentation fault Product: gcc Version: 11.1.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: mu11 at yahoo dot com Target Milestone: --- Created attachment 50812 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=50812&action=edit test case for bug gcc crashes with an internal error. Using the attached test case: % g++ -c -std=c++11 x2.cpp x2.cpp: In substitution of ‘template<class _Rep, class _Period> template<class _Period2> using __is_harmonic = std::__bool_constant<(std::ratio<_Period::den, std::duration<_Rep, _Period>::_S_gcd(5, 3)>::den == 1)> [with _Period2 = _Period2; _Rep = _Rep; _Period = _Period]’: x2.cpp:92:142: required from here x2.cpp:83:23: internal compiler error: Segmentation fault 83 | static constexpr long _S_gcd(long __m, long __n) noexcept | ^~~~~~ 0xcbd91f crash_signal ../../gcc-11.1.0/gcc/toplev.c:327 0x7a4921 tsubst(tree_node*, tree_node*, int, tree_node*) ../../gcc-11.1.0/gcc/cp/pt.c:15649 0x7b75f1 tsubst_template_args(tree_node*, tree_node*, int, tree_node*) ../../gcc-11.1.0/gcc/cp/pt.c:13418 0x7afb00 tsubst_aggr_type ../../gcc-11.1.0/gcc/cp/pt.c:13621 0x7ba32e tsubst_function_decl ../../gcc-11.1.0/gcc/cp/pt.c:14020 0x7b0529 tsubst_decl ../../gcc-11.1.0/gcc/cp/pt.c:14513 0x79f1c5 tsubst_copy ../../gcc-11.1.0/gcc/cp/pt.c:16747 0x7a0c90 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) ../../gcc-11.1.0/gcc/cp/pt.c:20950 0x7a1199 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) ../../gcc-11.1.0/gcc/cp/pt.c:19587 0x7a1199 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) ../../gcc-11.1.0/gcc/cp/pt.c:20223 0x7b2954 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) ../../gcc-11.1.0/gcc/cp/pt.c:19587 0x7b2954 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool) ../../gcc-11.1.0/gcc/cp/pt.c:19198 0x7b75f1 tsubst_template_args(tree_node*, tree_node*, int, tree_node*) ../../gcc-11.1.0/gcc/cp/pt.c:13418 0x7afb00 tsubst_aggr_type ../../gcc-11.1.0/gcc/cp/pt.c:13621 0x7a0535 tsubst_qualified_id ../../gcc-11.1.0/gcc/cp/pt.c:16448 0x7a19f6 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) ../../gcc-11.1.0/gcc/cp/pt.c:19948 0x7a0b03 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) ../../gcc-11.1.0/gcc/cp/pt.c:19587 0x7a0b03 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) ../../gcc-11.1.0/gcc/cp/pt.c:19910 0x7b2954 tsubst_copy_and_build(tree_node*, tree_node*, int, tree_node*, bool, bool) ../../gcc-11.1.0/gcc/cp/pt.c:19587 0x7b2954 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool) ../../gcc-11.1.0/gcc/cp/pt.c:19198