#include <metal_stdlib>

using namespace metal;
struct tint_array_wrapper {
  uint arr[2];
};
struct S {
  uint field0;
  float field1;
  tint_array_wrapper field2;
};

void x_500(int x_501) {
  return;
}

void main_1() {
  int x_200 = 0;
  if (true) {
    x_200 = 1;
  } else {
    return;
  }
  x_500(x_200);
  return;
}

fragment void tint_symbol() {
  main_1();
  return;
}

