[Bug c++/108620] internal compiler error: in instantiate_type, at cp/class.cc:8742 when assign the return value of co_yield to a member of class/struct

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=108620

Martin Liška <marxin at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
     Ever confirmed|0                           |1
             Status|UNCONFIRMED                 |NEW
                 CC|                            |iains at gcc dot gnu.org,
                   |                            |marxin at gcc dot gnu.org
   Last reconfirmed|                            |2023-02-06

--- Comment #3 from Martin Liška <marxin at gcc dot gnu.org> ---
Reduced to something that might be completely out of the topic, but still:

$ cat pr108620.ii
int ptr, main_output2;
template <class TArg> void call2(TArg, int) {
  ptr = co_yield TArg ::yield_private_data0;
}
main() { call2("", main_output2); }

$ g++ pr108620.ii -c -fcoroutines -Wfatal-errors -w
pr108620.ii: In instantiation of ‘void call2(TArg, int) [with TArg = const
char*]’:
pr108620.ii:5:15:   required from here
pr108620.ii:3:7: internal compiler error: in instantiate_type, at
cp/class.cc:8751
    3 |   ptr = co_yield TArg ::yield_private_data0;
      |   ~~~~^~~~~~~~~~
0x7ffff79805af __libc_start_call_main
        ../sysdeps/nptl/libc_start_call_main.h:58
0x7ffff7980678 __libc_start_main_impl
        ../csu/libc-start.c:381
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