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-rw-r--r--lib/Rewrite/Rewriter.cpp1
1 files changed, 1 insertions, 0 deletions
diff --git a/lib/Rewrite/Rewriter.cpp b/lib/Rewrite/Rewriter.cpp
index bea7c00352..e1a6651a9a 100644
--- a/lib/Rewrite/Rewriter.cpp
+++ b/lib/Rewrite/Rewriter.cpp
@@ -100,6 +100,7 @@ int Rewriter::getRangeSize(SourceRange Range) const {
unsigned Rewriter::getLocationOffsetAndFileID(SourceLocation Loc,
unsigned &FileID) const {
+ assert(Loc.isValid() && "Invalid location");
std::pair<unsigned,unsigned> V = SourceMgr->getDecomposedFileLoc(Loc);
FileID = V.first;
return V.second;