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-rw-r--r--lib/Serialization/ASTWriter.cpp10
1 files changed, 9 insertions, 1 deletions
diff --git a/lib/Serialization/ASTWriter.cpp b/lib/Serialization/ASTWriter.cpp
index 650d1aa3c5..befb74dbf3 100644
--- a/lib/Serialization/ASTWriter.cpp
+++ b/lib/Serialization/ASTWriter.cpp
@@ -777,7 +777,8 @@ void ASTWriter::WriteBlockInfoBlock() {
RECORD(ORIGINAL_PCH_DIR);
RECORD(INPUT_FILE_OFFSETS);
RECORD(DIAGNOSTIC_OPTIONS);
-
+ RECORD(FILE_SYSTEM_OPTIONS);
+
BLOCK(INPUT_FILES_BLOCK);
RECORD(INPUT_FILE);
@@ -1084,6 +1085,13 @@ void ASTWriter::WriteControlBlock(ASTContext &Context, StringRef isysroot,
// are generally transient files and will almost always be overridden.
Stream.EmitRecord(DIAGNOSTIC_OPTIONS, Record);
+ // File system options.
+ Record.clear();
+ const FileSystemOptions &FSOpts
+ = Context.getSourceManager().getFileManager().getFileSystemOptions();
+ AddString(FSOpts.WorkingDir, Record);
+ Stream.EmitRecord(FILE_SYSTEM_OPTIONS, Record);
+
// Original file name and file ID
SourceManager &SM = Context.getSourceManager();
if (const FileEntry *MainFile = SM.getFileEntryForID(SM.getMainFileID())) {