1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/include/llvm/Support/YAMLTraits.h b/llvm/include/llvm/Support/YAMLTraits.h
index 71fdf47f197..5f6f0493e28 100644
--- a/llvm/include/llvm/Support/YAMLTraits.h
+++ b/llvm/include/llvm/Support/YAMLTraits.h
@@ -1418,8 +1418,8 @@ inline typename std::enable_if<has_MappingTraits<T, EmptyContext>::value,
                                Input &>::type
 operator>>(Input &yin, T &docMap) {
   EmptyContext Ctx;
-  yin.setCurrentDocument();
-  yamlize(yin, docMap, true, Ctx);
+  if (yin.setCurrentDocument())
+    yamlize(yin, docMap, true, Ctx);
   return yin;
 }