[clang] [Clang] Correctly construct template arguments for template template parameters (PR #76811)

[Younan Zhang via cfe-commits]

zyn0217 wrote:

> That TTPD eventually DOES get the correct decl context, right? Or have you found a case where the decl context is NEVER set right? 

1) I believe so, yes; 2) Not yet, but I would keep an eye on issues.

So I presume the removal for declcontexts is correct (at least) at the moment, and I’d like to leave the “fix-up declcontexts from callers” work in the future patch if I could find out some cases.

Anyway, thank you again for the review and explanation!

https://github.com/llvm/llvm-project/pull/76811