SKIP: FAILED

struct f_inputs {
  float4 fbf;
  float4 pos : SV_Position;
};


void g(float a, float b) {
}

void f_inner(float4 fbf, float4 pos) {
  g(fbf[3u], pos[0u]);
}

void f(f_inputs inputs) {
  f_inner(inputs.fbf, float4(inputs.pos.xyz, (1.0f / inputs.pos[3u])));
}

FXC validation failure:
c:\src\dawn\Shader@0x000001A846BAD6B0(14,17-22): error X3502: 'f': input parameter 'inputs' missing semantics