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When incomplete structure/union types are completed later, compatibility of struct types that contain pointers to such types changes. When forming equivalence classes for TYPE_CANONICAL, we therefor need to be conservative and treat all structs with the same tag which are pointer targets as equivalent for purposed of determining equivalency of structure/union types which contain such types as member. This avoids having to update TYPE_CANONICAL of such structure/unions recursively. The pointer types themselves are updated in c_update_type_canonical. gcc/c/ * c-typeck.cc (comptypes_internal): Add flag to track whether a struct is the target of a pointer. (tagged_types_tu_compatible): When forming equivalence classes, treat nested pointed-to structs as equivalent. gcc/testsuite/ * gcc.dg/c23-tag-incomplete-alias-1.c: New test. |
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| .github | ||
| c++tools | ||
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