[PCH] When writing out the list of input files, avoid emitting duplicate
entries of the same file.
This can happen because the file was "included" multiple times and is
referenced by multiple SLocEntries.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@169829 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Serialization/ASTWriter.cpp b/lib/Serialization/ASTWriter.cpp
index ff98d9b..ed0a272 100644
--- a/lib/Serialization/ASTWriter.cpp
+++ b/lib/Serialization/ASTWriter.cpp
@@ -1235,9 +1235,14 @@
if (!Cache->OrigEntry)
continue;
+ uint32_t &InputFileID = InputFileIDs[Cache->OrigEntry];
+ if (InputFileID != 0)
+ continue; // already recorded this file.
+
// Record this entry's offset.
InputFileOffsets.push_back(Stream.GetCurrentBitNo());
- InputFileIDs[Cache->OrigEntry] = InputFileOffsets.size();
+
+ InputFileID = InputFileOffsets.size();
Record.clear();
Record.push_back(INPUT_FILE);