diff --git a/utils/TableGen/CodeGenDAGPatterns.cpp b/utils/TableGen/CodeGenDAGPatterns.cpp
index 6e7dd1e..6af0515 100644
--- a/utils/TableGen/CodeGenDAGPatterns.cpp
+++ b/utils/TableGen/CodeGenDAGPatterns.cpp
@@ -1113,7 +1113,7 @@
 
 void TreePattern::error(const std::string &Msg) const {
   dump();
-  throw "In " + TheRecord->getName() + ": " + Msg;
+  throw TGError(TheRecord->getLoc(), "In " + TheRecord->getName() + ": " + Msg);
 }
 
 TreePatternNode *TreePattern::ParseTreePattern(DagInit *Dag) {