[YAML] Plug a memory leak

The destructor of BlockScalarNode is never called. Store the contained
string in BumpPtrAllocated memory instead.

llvm-svn: 237614

1 files changed, 4 insertions, 2 deletions

diff --git a/llvm/lib/Support/YAMLParser.cpp b/llvm/lib/Support/YAMLParser.cpp
index 162a22bd910..41d446744fe 100644
--- a/llvm/lib/Support/YAMLParser.cpp
+++ b/llvm/lib/Support/YAMLParser.cpp
@@ -2377,11 +2377,13 @@ parse_property:
                 , AnchorInfo.Range.substr(1)
                 , TagInfo.Range
                 , T.Range);
-  case Token::TK_BlockScalar:
+  case Token::TK_BlockScalar: {
     getNext();
+    StringRef StrCopy = StringRef(T.Value).copy(NodeAllocator);
     return new (NodeAllocator)
         BlockScalarNode(stream.CurrentDoc, AnchorInfo.Range.substr(1),
-                        TagInfo.Range, T.Value, T.Range);
+                        TagInfo.Range, StrCopy, T.Range);
+  }
   case Token::TK_Key:
     // Don't eat the TK_Key, KeyValueNode expects it.
     return new (NodeAllocator)