Pretty-printer: Paper over an ambiguity between line table entries

and tagged mdnodes.

fixes http://llvm.org/bugs/show_bug.cgi?id=21131

llvm-svn: 218885

1 files changed, 3 insertions, 1 deletions

diff --git a/llvm/lib/IR/DebugInfo.cpp b/llvm/lib/IR/DebugInfo.cpp
index 206d04e3749..2226dd63be6 100644
--- a/llvm/lib/IR/DebugInfo.cpp
+++ b/llvm/lib/IR/DebugInfo.cpp
@@ -1460,7 +1460,9 @@ void DIExpression::printInternal(raw_ostream &OS) const {
       break;
     }
     default:
-      break;
+      // Else bail out early. This may be a line table entry.
+      OS << "Unknown]";
+      return;
     }
     OS << "]";
   }