[Bug c++/105758] New: [12/13 Regression] ICE in build_baselink since r12-6897

[jakub at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=105758

            Bug ID: 105758
           Summary: [12/13 Regression] ICE in build_baselink since
                    r12-6897
           Product: gcc
           Version: 12.1.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: c++
          Assignee: unassigned at gcc dot gnu.org
          Reporter: jakub at gcc dot gnu.org
  Target Milestone: ---

Starting with r12-6897-gdec8d0e5fa00ceb2ded78b8a3eba8976d860a90e we ICE with
-std=c++11 on the following testcase:
struct A {
  template <typename D, typename T> void foo(D, T, int);
};
template <class, typename, class, class, class, class, class, class, class,
class, class, class>
struct Z : A {
  static Z *z;
  void bar();
};
template <class T, typename B, class P1, class P2, class P3, class P4, class
P5, class P6, class P7, class P8, class P9, class P10>
Z<T, B, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10> *Z<T, B, P1, P2, P3, P4, P5,
P6, P7, P8, P9, P10>::z;
template <class T, typename B, class P1, class P2, class P3, class P4, class
P5, class P6, class P7, class P8, class P9, class P10>
void Z<T, B, P1, P2, P3, P4, P5, P6, P7, P8, P9, P10>::bar() {
  int a = 0, b = 1, c = 2;
  z->foo(a, b, c);
}