[Bug c++/107484] [13 Regression] ICE: Segmentation fault (in decls_match)

["rguenth at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=107484

Richard Biener <rguenth at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Keywords|ice-checking                |accepts-invalid
           Priority|P2                          |P1

--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Also crashes with a release checking build:

> ./cc1plus -quiet t.ii
t.ii:5:52: internal compiler error: Segmentation fault
    5 |     friend void qualified_friend_no_match::f(double);
      |                                                    ^
0xe2c7af crash_signal
        /home/rguenther/src/trunk/gcc/toplev.cc:314
0x793c24 decls_match(tree_node*, tree_node*, bool)
        /home/rguenther/src/trunk/gcc/cp/decl.cc:1075
0x7b6de6 find_last_decl
        /home/rguenther/src/trunk/gcc/cp/decl2.cc:1630

since it's not error-recovery it's still P1.

Also crashes with

namespace qualified_friend_no_match {
  void f(int);
  template<typename T> void f(T*);
  struct X {
    friend void qualified_friend_no_match::f(double *);
  };
}

which looks more valid to me, but I'm not a C++ expert (but clang++ 13 accepts
it - but that also accepts the original testcase).