https://gcc.gnu.org/bugzilla/show_bug.cgi?id=96396
Bug ID: 96396 Summary: initializer_list in `-fconcepts -std=c++11` reports internal compiler error Product: gcc Version: 10.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: gcc at mailinator dot com Target Milestone: --- Program: ``` #include<initializer_list> int main(){ for(auto it:{1, 2}){ } } ``` Compiler flag: `-fconcepts -std=c++11` Godbolt link: https://cpp.godbolt.org/z/K7e5rh (version: x84-64 gcc 10.2 or trunk) Compiler output: ``` <source>: In function 'int main()': <source>:4:26: internal compiler error: in type_unification_real, at cp/pt.c:21786 4 | for(auto it:{1, 2}){ | ^ Please submit a full bug report, with preprocessed source if appropriate. See <https://gcc.gnu.org/bugs/> for instructions. ```