[llvm-branch-commits] [clang] release/19.x: [C++20] [Modules] Don't diagnose duplicated implicit decl in multiple named modules (#102423) (PR #102425)

[Chuanqi Xu via llvm-branch-commits]

ChuanqiXu9 wrote:

I landed this directly as the owner of serialization. I feel this change is not riskful as it adds more conditions to generate a diagnose message we didn't do in 18.x and before. So nothing will be worse.

https://github.com/llvm/llvm-project/pull/102425