Description
We just upgraded to the latest May 2025 release, from a previous self-compiled build at 47e11af. One of our shaders triggers a SIGSEGV right inside DXC. This seems to be caused by calling sizeof() on a templated type, regardless of what the struct contains. It doesn't seem to need to use T in any capacity for this to trigger.
Steps to Reproduce
https://godbolt.org/z/hnfd5EEGY (DXC on trunk, this doesn't have an explicit tagged 1.8.2505 release just yet)
template<typename T> struct Encoded{
// uint x;
// T y;
};
[numthreads(8, 8, 1)]
void main(uint2 tid : SV_DispatchThreadID) {
uint s = sizeof(Encoded<int>);
}
It doesn't matter if we compile to DXIL or SPIR-V.
Environment
v1.8.2505 (using the library)Given that we have a known-working commit, bisection should only contain these 51 commits:
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