SKIP: FAILED

<dawn>/src/tint/lang/msl/writer/printer/printer.cc:775 internal compiler error: Interface = struct @align(16) {
  col1:f32 @offset(0), @location(1)
  col2:f16 @offset(4), @location(2)
  pos:vec4<f32> @offset(16), @builtin(position)
}

%vert_main = @vertex func():Interface -> %b1 {
  %b1 = block {
    ret Interface(0.40000000596046447754f, 0.599609375h, vec4<f32>(0.0f))
  }
}
%frag_main = @fragment func(%colors:Interface):void -> %b2 {
  %b2 = block {
    %r:f32 = access %colors, 0u
    %g:f16 = access %colors, 1u
    ret
  }
}

invalid entry point IO struct uses
********************************************************************
*  The tint shader compiler has encountered an unexpected error.   *
*                                                                  *
*  Please help us fix this issue by submitting a bug report at     *
*  crbug.com/tint with the source program that triggered the bug.  *
********************************************************************