Which proposal does this relate to?
0005 - Strict Initializer Lists

Describe the issue or outstanding question.
This feature needs a completed detailed design. Since this feature implements a replacement for a non-conformant HLSL language feature that we may not want to implement in Clang, it would be nice to get this feature into HLSL 202x so that users can adopt the new feature in DXC before transitioning to Clang.