Test/hlsl.emptystruct.init.vert - third_party/glslang - Git at Google

 struct Test { };

 static const Test Test_Empty;

 float4 main(in uint vertexIndex : VERTEXID) : VS_OUT_POSITION
 {
     return 0;
 }
	struct Test { };

	static const Test Test_Empty;

	float4 main(in uint vertexIndex : VERTEXID) : VS_OUT_POSITION
	{
	return 0;
	}