Internal compiler error when attempting to link a non-library input

Description
DXC page faults if you attempt to feed a cs_6_3 input to the linker.

Steps to Reproduce
Create this file and name it test.hlsl:

Texture2D<uint> texResource : register(t900);
RWTexture2D<uint> rwTexResource[] : register(u0, space2400);
[numthreads(8, 8, 1)]
void main(uint3 dtid : SV_DispatchThreadID, uint3 gtid : SV_GroupThreadID, uint3 gid : SV_GroupID, uint gindex : SV_GroupIndex)
{
    rwTexResource[0][dtid.xy] = texResource.Load(dtid.xyz);
}

Run these commands:

dxc.exe -T cs_6_3 -Fo test.bin test.hlsl
dxc.exe -link -T cs_6_3 -Fo test2.bin test.bin

Actual Behavior
DXC will crash with this error:
Internal compiler error: access violation. Attempted to read from address 0x0000000000000000

Environment

• DXC version dxcompiler.dll: 1.7 - 1.7.2207.3 (e9137cd1d); dxil.dll: 1.7(101.7.2207.10)
• Host Operating System Windows 10

Start by reproducing the crash with test.hlsl using the two dxc.exe commands in the issue, especially the -link invocation on test.bin. Trace the linker path for a non-library cs_6_3 input and verify that it reports a handled error instead of an access violation.