Types implementation (Using the GNU Compiler Collection (GCC))

A program forms the composite type of an enumerated type and a non-enumeration integer type (C23 6.2.7).
The composite type is the enumerated type.
Whether or not it is supported for a declaration for which a type is inferred to contain a pointer, array, or function declarator (C23 6.7.10).
This is not supported.
Whether or not it is supported for a declaration for which a type is inferred to contain no or more than one declarators (C23 6.7.10).
This is not supported.