https://gcc.gnu.org/bugzilla/show_bug.cgi?id=110978
Bug ID: 110978 Summary: [14 Regression] ICE lambda constrained with to-be-deduced object Product: gcc Version: 14.0 Status: UNCONFIRMED Keywords: ice-on-invalid-code Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: johelegp at gmail dot com CC: johelegp at gmail dot com Target Milestone: --- See <https://compiler-explorer.com/z/3a87zrhqd>. ```C++ int f(int); int main() { auto f = [](auto obj) requires requires { f(obj); } { return f(obj); }(0); } ``` ```output <source>: In function 'int main()': <source>:3:45: error: use of 'f' before deduction of 'auto' 3 | auto f = [](auto obj) requires requires { f(obj); } { return f(obj); }(0); | ^ <source>:3:12: error: constraints on a non-templated function 3 | auto f = [](auto obj) requires requires { f(obj); } { return f(obj); }(0); | ^ <source>:3:53: internal compiler error: in dependent_type_p, at cp/pt.cc:27895 3 | auto f = [](auto obj) requires requires { f(obj); } { return f(obj); }(0); | ^ 0x24742fe internal_error(char const*, ...) ???:0 0xaca188 fancy_abort(char const*, int, char const*) ???:0 0xb8c067 start_preparsed_function(tree_node*, tree_node*, int) ???:0 0xbeaac9 start_lambda_function(tree_node*, tree_node*) ???:0 0xcb0974 c_parse_file() ???:0 0xdf1599 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. Compiler returned: 1 ```