[all-commits] [llvm/llvm-project] fb2c9d: [C++20] [Modules] Makes sure internal declaration ...

[Chuanqi Xu via All-commits]

  Branch: refs/heads/main
  Home:   https://github.com/llvm/llvm-project
  Commit: fb2c9d940ad87e6ae09e06c6915e0c925a4f87ec
      https://github.com/llvm/llvm-project/commit/fb2c9d940ad87e6ae09e06c6915e0c925a4f87ec
  Author: Chuanqi Xu <yedeng.yd at linux.alibaba.com>
  Date:   2025-01-17 (Fri, 17 Jan 2025)

  Changed paths:
    M clang/include/clang/Serialization/ASTBitCodes.h
    M clang/include/clang/Serialization/ASTReader.h
    M clang/include/clang/Serialization/ASTWriter.h
    M clang/lib/Serialization/ASTReader.cpp
    M clang/lib/Serialization/ASTReaderDecl.cpp
    M clang/lib/Serialization/ASTWriter.cpp
    M clang/lib/Serialization/ASTWriterDecl.cpp
    M clang/test/CXX/basic/basic.lookup/basic.lookup.argdep/p5-ex2.cpp
    M clang/test/CXX/basic/basic.scope/basic.scope.namespace/p2.cpp
    M clang/test/CXX/module/basic/basic.def.odr/p4.cppm
    M clang/test/CXX/module/basic/basic.link/p2.cppm

  Log Message:
  -----------
  [C++20] [Modules] Makes sure internal declaration won't be found by other TU (#123059)

Close https://github.com/llvm/llvm-project/issues/61427

And this is also helpful to implement
https://github.com/llvm/llvm-project/issues/112294 partially.

The implementation strategy mimics
https://github.com/llvm/llvm-project/pull/122887. This patch split the
internal declarations from the general lookup table so that other TU
can't find the internal declarations.



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