https://gcc.gnu.org/bugzilla/show_bug.cgi?id=121069
--- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
/* internal compiler error: Check code */
int main() {
auto func = [](auto... args) constexpr {
return (([]<typename... Ts>(Ts arg) {
return arg;
}(args)),...);
};
func(2, 6, 7);
}
Arise same issue:
<source>:6:25: internal compiler error: in tsubst_pack_expansion, at
cp/pt.cc:14039
4 | return (([]<typename... Ts>(Ts arg) {
| ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
5 | return arg;
| ~~~~~~~~~~~
6 | }(args)),...);
| ~~~~~~~~^~~~~
0x287a025 diagnostic_context::diagnostic_impl(rich_location*,
diagnostic_metadata const*, diagnostic_option_id, char const*, __va_list_tag
(*) [1], diagnostic_t)
???:0
0x289bd06 internal_error(char const*, ...)
???:0
0xaf4a22 fancy_abort(char const*, int, char const*)
???:0
0xd7993d instantiate_decl(tree_node*, bool, bool)
???:0
0xc01e23 maybe_instantiate_decl(tree_node*)
???:0
0xc03b97 mark_used(tree_node*, int)
???:0
0xb31163 build_op_call(tree_node*, vec<tree_node*, va_gc, vl_embed>**, int)
???:0
0xda442e finish_call_expr(tree_node*, vec<tree_node*, va_gc, vl_embed>**, bool,
bool, int)
???:0
0xd21723 c_parse_file()
???:0
0xe8b9d9 c_common_parse_file()
???:0
