How can I return an anonymous struct in C?

Question

Trying some code, I realized that the following code compiles:

struct { int x, y; } foo(void) {
}

It se

Answer 1

This works in my version of GCC, but seems like a total hack. It is perhaps useful in auto-generated code where you don't want to deal with the additional complexity of generating unique structure tags, but I'm sort of stretching to come up with even that rationalization.

struct { int x,y; }

foo(void) {
   typeof(foo()) ret;
   ret.x = 1;
   ret.y = 10;
   return ret;
}

main()
{
   typeof(foo()) A;

   A = foo();

   printf("%d %d\n", A.x, A.y);
}

Also, it's dependent on typeof() being present in the compiler -- GCC and LLVM seem to support it, but I'm sure many compilers do not.