1 files changed, 4 insertions, 1 deletions
diff --git a/clang/lib/CodeGen/CoverageMappingGen.cpp b/clang/lib/CodeGen/CoverageMappingGen.cpp
index 89a30dc7040..5eb48c2b579 100644
--- a/clang/lib/CodeGen/CoverageMappingGen.cpp
+++ b/clang/lib/CodeGen/CoverageMappingGen.cpp
@@ -74,7 +74,10 @@ public:
 
   bool hasEndLoc() const { return LocEnd.hasValue(); }
 
-  void setEndLoc(SourceLocation Loc) { LocEnd = Loc; }
+  void setEndLoc(SourceLocation Loc) {
+    assert(Loc.isValid() && "Setting an invalid end location");
+    LocEnd = Loc;
+  }
 
   SourceLocation getEndLoc() const {
     assert(LocEnd && "Region has no end location");