commit 2b45dd58b22da40bb08e82d1564ccecca4a700f5
author Richard Smith <richard-llvm@metafoo.co.uk> Sat Dec 22 00:15:13 2012 +0000
committer Richard Smith <richard-llvm@metafoo.co.uk> Sat Dec 22 00:15:13 2012 +0000
tree 49da29c5119a53bed099ef7e76cdaf121fbcbc8b
parent d0696ef8c33b9b2504e89bc0aab2ea99a6c90756

Don't call back() on an empty SmallVector. Found by -fsanitize=enum!


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@170968 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Support/YAMLTraits.cpp

diff --git a/lib/Support/YAMLTraits.cpp b/lib/Support/YAMLTraits.cpp
index a31c319..8fcef40 100644
--- a/lib/Support/YAMLTraits.cpp
+++ b/lib/Support/YAMLTraits.cpp
@@ -516,7 +516,7 @@
 
 void Output::outputUpToEndOfLine(StringRef s) {
   this->output(s);
-  if (StateStack.back() != inFlowSeq)
+  if (StateStack.empty() || StateStack.back() != inFlowSeq)
     NeedsNewLine = true;
 }