SKIP: FAILED

#include <metal_stdlib>
using namespace metal;
struct VertexInputs {
  uint vertex_index [[vertex_id]];
  uint instance_index [[instance_id]];
};

vertex float4 tint_symbol(VertexInputs inputs) {
  uint const foo = (inputs.vertex_index + inputs.instance_index);
  return float4(0.0f);
}
program_source:4:23: error: 'vertex_id' attribute only applies to parameters
  uint vertex_index [[vertex_id]];
                      ^
program_source:5:25: error: 'instance_id' attribute only applies to parameters
  uint instance_index [[instance_id]];
                        ^
program_source:8:27: error: invalid type 'VertexInputs' for input declaration in a vertex function
vertex float4 tint_symbol(VertexInputs inputs) {
                          ^~~~~~~~~~~~~~~~~~~
program_source:4:3: note: type 'uint' (aka 'unsigned int') cannot be used in struct of resources/colors
  uint vertex_index [[vertex_id]];
  ^
program_source:5:3: note: type 'uint' (aka 'unsigned int') cannot be used in struct of resources/colors
  uint instance_index [[instance_id]];
  ^