https://gcc.gnu.org/bugzilla/show_bug.cgi?id=127229
--- Comment #1 from eczbek.void at gmail dot com --- Also, a slightly different error: https://godbolt.org/z/nrGonhEMo ``` #include <meta> void f(auto&& x) { int y = [:variable_of(parameters_of(std::meta::current_function())[0]):]; } int main() { f(0); } ``` ``` <source>: In instantiation of 'void f(auto:8&&) [with auto:8 = int]': <source>:8:3: required from here 8 | f(0); | ~^~~ <source>:4:13: internal compiler error: in implicit_conversion, at cp/call.cc:2248 4 | int y = [:variable_of(parameters_of(std::meta::current_function())[0]):]; | ^ 0x2bddaf8 diagnostics::context::diagnostic_impl(rich_location*, diagnostics::metadata const*, diagnostics::option_id, char const*, __va_list_tag (*) [1], diagnostics::kind) ???:0 0x2bd273b internal_error(char const*, ...) ???:0 0xb4a87a fancy_abort(char const*, int, char const*) ???:0 0xb7d7df can_convert_arg_bad(tree_node*, tree_node*, tree_node*, int, int) ???:0 0xeb30f0 store_init_value(tree_node*, tree_node*, vec<tree_node*, va_gc, vl_embed>**, int) ???:0 0xc5e606 cp_finish_decl(tree_node*, tree_node*, bool, tree_node*, int, cp_decomp*) ???:0 0xe0754d instantiate_decl(tree_node*, bool, bool) ???:0 0xe114ba instantiate_pending_templates(int) ???:0 0xc72db8 c_parse_final_cleanups() ???:0 0xf35c58 c_common_parse_file() ???:0 /cefs/94/945ccd2dc62f324d7e139303_gcc-trunk-20260905/bin/../libexec/gcc/x86_64-linux-gnu/17.0.0/cc1plus -quiet -imultiarch x86_64-linux-gnu -iprefix /cefs/94/945ccd2dc62f324d7e139303_gcc-trunk-20260905/bin/../lib/gcc/x86_64-linux-gnu/17.0.0/ -D_GNU_SOURCE <source> -quiet -dumpdir /app/ -dumpbase output.cpp -dumpbase-ext .cpp -masm=intel -mtune=generic -march=x86-64 -g -std=c++26 -fdiagnostics-color=always -fno-verbose-asm -freflection -o /app/output.s ```
