[PATCH] D38578: [preamble] Also record the "skipping" state of the preprocessor

[Erik Verbruggen via Phabricator via cfe-commits]

erikjv created this revision.

When a preamble ends in a conditional preprocessor block that is being
skipped, the preprocessor needs to continue skipping that block when
the preamble is used.

This fixes PR34570.


https://reviews.llvm.org/D38578

Files:
  include/clang/Lex/Preprocessor.h
  lib/Lex/PPDirectives.cpp
  lib/Lex/Preprocessor.cpp
  lib/Serialization/ASTReader.cpp
  lib/Serialization/ASTWriter.cpp
  test/Index/preamble-conditionals-inverted.cpp
  test/Index/preamble-conditionals-skipping.cpp

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