[Bug c++/105760] New: ICE: in build_function_type, at tree.cc:7365

[hewillk at gmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105760

            Bug ID: 105760
           Summary: ICE: in build_function_type, at tree.cc:7365
           Product: gcc
           Version: 12.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: hewillk at gmail dot com
  Target Milestone: ---

13 Regression

template<class... Ts, class>
struct A { A(Ts...); };
A a;

https://godbolt.org/z/qeYGz1Yov