Demonstrates that structs are not initialized under ARC. Run in Release.

gistfile1.m

int main(int argc, const char * argv[]) {
  @autoreleasepool {
    struct Stuff {
      int x;
      int y;
    };

    int x;
    struct Stuff s;
    printf("%d:%d\n", x, s.y);

  }
  return 0;
}