https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122572
Martin Uecker <uecker at tugraz dot at> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |uecker at tugraz dot at
--- Comment #16 from Martin Uecker <uecker at tugraz dot at> ---
As a first guess, maybe this fixes it...
--- a/gcc/c/c-typeck.cc
+++ b/gcc/c/c-typeck.cc
@@ -1889,7 +1889,7 @@ tagged_types_tu_compatible_p (const_tree t1, const_tree
t2,
/* When forming equivalence classes for TYPE_CANONICAL in C23, we treat
structs with the same tag as equivalent, but only when they are targets
of pointers inside other structs. */
- if (data->equiv && data->pointedto)
+ if (data->equiv && data->pointedto && NULL_TREE != c_type_tag (t1))
return true;
/* Different types without tag are incompatible except as an anonymous
