1void c(int) {} 2void b(int i) { c(i)==c(i); } 3void a(int) { b(0); } 4half4 main(float2) { int i; a(i); return half4(0); } 5 6/*%%* 7type mismatch: '==' cannot operate on 'void', 'void' 8*%%*/ 9