https://gcc.gnu.org/bugzilla/show_bug.cgi?id=94477
Bug ID: 94477 Summary: ICE in tsubst_expr, at cp/pt.c:18181 Product: gcc Version: 10.0 Status: UNCONFIRMED Keywords: ice-on-valid-code, openmp Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: asolokha at gmx dot com Target Milestone: --- g++-10.0.1-alpha20200329 snapshot (g:60c254b279e8e8443b8ad26cc46b9e4084cff66c) ICEs when compiling the following testcase, extracted from test/OpenMP/parallel_master_taskloop_collapse_messages.cpp from the clang 10.0.0 test suite, w/ -fopenmp: void j3 (); template <int> void xm () { #pragma omp parallel master j3 (); } void s3 () { xm<0> (); } % g++-10.0.1 -fopenmp -c qnx2epwv.cpp qnx2epwv.cpp: In instantiation of 'void xm() [with int <anonymous> = 0]': qnx2epwv.cpp:15:11: required from here qnx2epwv.cpp:8:11: internal compiler error: in tsubst_expr, at cp/pt.c:18181 8 | #pragma omp parallel master | ^~~ 0x659d49 tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool) /var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200329/work/gcc-10-20200329/gcc/cp/pt.c:18181 0x9eb63a tsubst_expr(tree_node*, tree_node*, int, tree_node*, bool) /var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200329/work/gcc-10-20200329/gcc/cp/pt.c:17985 0x9e97f6 instantiate_decl(tree_node*, bool, bool) /var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200329/work/gcc-10-20200329/gcc/cp/pt.c:25507 0xa1a4ab instantiate_pending_templates(int) /var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200329/work/gcc-10-20200329/gcc/cp/pt.c:25623 0x91fbd3 c_parse_final_cleanups() /var/tmp/portage/sys-devel/gcc-10.0.1_alpha20200329/work/gcc-10-20200329/gcc/cp/decl2.c:4874