assertion failure with zero-length array

[expipiplus1]

Fails in legalizeArrayReturnType

[numthreads(4, 1, 1)]
void computeMain(uint3 dispatchThreadID : SV_DispatchThreadID)
{
    bar();
}
func bar() -> int[0];

[natduca]

Seems like q3 is where we're putting language completeness items. Medium b/c compiler crash so inherently more important than quality of life