_Generic in C++ doesn't allow an elaborated type specifier as an association #55562
Description
Clang supports _Generic as an extension in C++ mode, but the following C++ code doesn't parse when it should:
struct S {
int i;
};
void func(struct S s) {
(void)_Generic(s, struct S : 1); // error: 'S' cannot be defined in a type specifier \
error: expected class name \
error: expected '{' after base class list
}This use is not defining a new type specifier, it's attempting to use an elaborated type specifier for referencing the type.