Internal Compiler Error #8310

Description

Encountering an internal compiler error.

Steps to Reproduce

The code to reproduce is here

https://hlsl.godbolt.org/z/bGMq483j7

This is a slimmed down piece from a massive shader, so please excuse the ridiculous number of uninitialized variables. I trimmed everything I could.

However you might notice, that successfully compiles on godbolt. I cannot for the life of me figure out why. I have a local version of DXC feb 2026 release, and also a local version of main (bb168c9) that I built, and both reproduce the internal compiler error. Command line used to run is

dxc -Tlib_6_5 shader.hlsl

Stack trace

Actual Behavior

Internal Compiler error

Environment

• DXC version - feb 2026 release, and bb168c9
• Host Operating System - Windows 11, ver 24h2 (os build 26100.7840)
  (also the person who referred me this issue was on some version of linux using the feb 2026 release)