#include <metal_stdlib>

using namespace metal;
struct S {
  /* 0x0000 */ packed_uint3 v;
  /* 0x000c */ int8_t tint_pad[4];
};

void f(device S* const tint_symbol) {
  (*(tint_symbol)).v = uint3(1u, 2u, 3u);
  (*(tint_symbol)).v[0] = 1u;
  (*(tint_symbol)).v[1] = 2u;
  (*(tint_symbol)).v[2] = 3u;
}