[Bug modula2/109264] Compiler hangs trying to resolve opaque type

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109264

--- Comment #2 from Gaius Mulley <gaius at gcc dot gnu.org> ---
Created attachment 54737
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=54737&action=edit
Proposed fix