Crash when using structurally equivalent structs #1560

// dxc /Tgs_6_0 t.hlsl
struct VSOutGSIn
{
    float4  clr : COLOR0;
    float4  pos : SV_Position;
};

struct GSOutPSIn
{
    float4  clr : COLOR0;
    float4  pos : SV_Position;
};

[maxvertexcount(3)]
void main(triangle VSOutGSIn tri[3], inout TriangleStream<GSOutPSIn> stream)
{
//#define WORKAROUND
#if !defined(WORKAROUND)
    stream.Append(tri[0]);
    stream.Append(tri[1]);
    stream.Append(tri[2]);
#else
    GSOutPSIn t0;
        t0.clr = tri[0].clr;
        t0.pos = tri[0].pos;
    GSOutPSIn t1;
        t1.clr = tri[1].clr;
        t1.pos = tri[1].pos;
    GSOutPSIn t2;
        t2.clr = tri[2].clr;
        t2.pos = tri[2].pos;

    stream.Append(t0);
    stream.Append(t1);
    stream.Append(t2);
#endif
}