SKIP: FAILED

#include <metal_stdlib>
using namespace metal;
struct a {
  int a;
};

void f(a a) {
  a const b = a;
}
program_source:8:4: error: expected ';' after expression
  a const b = a;
   ^
   ;
program_source:8:11: error: C++ requires a type specifier for all declarations
  a const b = a;
    ~~~~~ ^
program_source:8:3: warning: expression result unused [-Wunused-value]
  a const b = a;
  ^