[clang] [Clang] Fix template elision to preserve qualifiers in diagnostics (PR #180175)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

> I reviewed the failing tests and they all come from Clang AST JSON dump checks where the expected `"offset"` values do not match the actual output. AST structure itself is correct , only the recorded byte offsets differ slightly.
> 
> These tests validate exact source location metadata, which is sensitive to environment differences (e.g., line ending normalization). So the failures are location mismatches, not compiler logic issues.

What kind of "offset" issues are you encountering with after this patch? And why are there offset issues if the change should only aim to fix the qualifier problem?


https://github.com/llvm/llvm-project/pull/180175