[llvm-branch-commits] [clang] Backport: [clang] fix matching of nested template template parameters (PR #130950)

[Mike Lothian via llvm-branch-commits]

FireBurn wrote:

Sorry my C++ templating skills aren't good enough to create a reduced example, it should be self contained to that repo - or at least enough to show the error, it shouldn't be using system libraries

https://github.com/llvm/llvm-project/pull/130950