https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97679
Bug ID: 97679 Summary: ICE with CTAD on a nested class template with constrained constructor Product: gcc Version: 10.2.0 Status: UNCONFIRMED Severity: normal Priority: P3 Component: c++ Assignee: unassigned at gcc dot gnu.org Reporter: ppalka at gcc dot gnu.org Target Milestone: --- $ cat testcase.C template <bool V> struct A { template <class T> struct B { B(T) requires V; }; }; A<true>::B x(0); $ g++ -std=c++20 testcase.C testcase.C: In substitution of ‘template<class T> B(T)-> A<true>::B<T> requires T [with T = int]’: testcase.C:5:15: required from here testcase.C:5:15: internal compiler error: Segmentation fault 5 | A<true>::B x(0); | ^