[PATCH] D125773: [Driver] Do not auto-enable header modules with -std=c++20

[Ilya Biryukov via Phabricator via cfe-commits]

ilya-biryukov created this revision.
ilya-biryukov added a reviewer: sammccall.
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Herald added a project: clang.

This only shows up if one passes module maps to Clang in `-std=c++20`
modes, e.g. for layering checks.


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D125773

Files:
  clang/include/clang/Basic/LangOptions.def
  clang/include/clang/Driver/Options.td
  clang/lib/Driver/ToolChains/Clang.cpp
  clang/lib/Lex/PPDirectives.cpp
  clang/test/Driver/cpp20-header-module.cpp
  clang/test/Modules/Inputs/cxx20-and-header-modules/a.h
  clang/test/Modules/Inputs/cxx20-and-header-modules/a.map
  clang/test/Modules/cxx20-and-header-modules.cpp

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