#version 310 es
precision mediump float;

void f() {
  uvec3 a = uvec3(1u, 2u, 3u);
  uvec3 r = (a - 4u);
}

layout(local_size_x = 1, local_size_y = 1, local_size_z = 1) in;
void main() {
  f();
  return;
}