https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106152
Bug ID: 106152 Summary: New ICE compiling template expressions Product: gcc Version: 13.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: byteslice at airmail dot cc Target Milestone: --- Created attachment 53229 --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=53229&action=edit Reduced example Compile with -std=gnu++20. No ICE on 12. g++ (f35dbc02092fbcd3d814fcd9fe8e871c3f741fd, binutils-2.38) 13.0.0 20220626 -- <source>: In instantiation of 'struct invert_typelist_impl<index_tuple<0> >': <source>:20:75: required from 'struct invert_typelist<typelist<int> >' <source>:22:11: required from here <source>:15:21: internal compiler error: in iterative_hash_template_arg, at cp/pt.cc:1819 15 | static const long last_idx; | ^~~~~~~~ 0x2212db9 internal_error(char const*, ...) ???:0 0x74a531 fancy_abort(char const*, int, char const*) ???:0 0x9a2397 iterative_hash_template_arg(tree_node*, unsigned int) ???:0 0x9a16bd iterative_hash_template_arg(tree_node*, unsigned int) ???:0 0x9cb387 tsubst(tree_node*, tree_node*, int, tree_node*) ???:0 0x9f7d56 tsubst_template_args(tree_node*, tree_node*, int, tree_node*) ???:0 0x9caeea tsubst(tree_node*, tree_node*, int, tree_node*) ???:0 0x9e6987 tsubst_pack_expansion(tree_node*, tree_node*, int, tree_node*) ???:0 0x9f7fd2 tsubst_template_args(tree_node*, tree_node*, int, tree_node*) ???:0 0x9cb0e9 tsubst(tree_node*, tree_node*, int, tree_node*) ???:0 0x9cb387 tsubst(tree_node*, tree_node*, int, tree_node*) ???:0 0xa118b1 instantiate_class_template(tree_node*) ???:0 0xa11b27 instantiate_class_template(tree_node*) ???:0 0xa87f8b complete_type_or_maybe_complain(tree_node*, tree_node*, int) ???:0 0x9b8750 process_template_parm(tree_node*, unsigned int, tree_node*, bool, bool) ???:0 0x993a5d c_parse_file() ???:0 0xb2a161 c_common_parse_file() ???:0 Please submit a full bug report, with preprocessed source (by using -freport-bug). Please include the complete backtrace with any bug report. See <https://gcc.gnu.org/bugs/> for instructions.