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-rw-r--r--lib/Basic/SourceManager.cpp2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/Basic/SourceManager.cpp b/lib/Basic/SourceManager.cpp
index dfd2a1baf4..0de5129a35 100644
--- a/lib/Basic/SourceManager.cpp
+++ b/lib/Basic/SourceManager.cpp
@@ -2043,7 +2043,7 @@ bool SourceManager::isBeforeInTranslationUnit(SourceLocation LHS,
// is a serialized one referring to a file that was removed after we loaded
// the PCH.
if (LOffs.first.isInvalid() || ROffs.first.isInvalid())
- return LOffs.first.isInvalid();
+ return LOffs.first.isInvalid() && !ROffs.first.isInvalid();
// If the source locations are in the same file, just compare offsets.
if (LOffs.first == ROffs.first)