[all-commits] [llvm/llvm-project] 93ebe6: [C++20] [Modules] Fix ADL for friend in modules

[Chuanqi Xu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: 93ebe63f2e7a252038bde01a4399c14e0123cdac
      https://github.com/llvm/llvm-project/commit/93ebe63f2e7a252038bde01a4399c14e0123cdac
  Author: Chuanqi Xu <yedeng.yd at linux.alibaba.com>
  Date:   2025-12-03 (Wed, 03 Dec 2025)

  Changed paths:
    M clang/lib/Sema/SemaLookup.cpp
    A clang/test/Modules/pr170235.cppm

  Log Message:
  -----------
  [C++20] [Modules] Fix ADL for friend in modules

Close https://github.com/llvm/llvm-project/issues/170235

The cause of the issue is it didn't check friendness for decls
in ordinary namespace if it isn't visible.

It is fine for code before modules, since everything is visible.
But it is not true after modules came in. This patch adjusts this.

Note that this doesn't change the control flow for non-modules codes,
as the decls in ordinary namespace is always visible then it won't never
fall in following friendness check.



To unsubscribe from these emails, change your notification settings at https://github.com/llvm/llvm-project/settings/notifications