Check if the paren stack has elements first.

2014-10-06 19:05:09 +02:00 · 2014-10-06 19:05:09 +02:00 · a83d3bafe3
commit a83d3bafe3
parent 32d06e92f0
1 changed files with 1 additions and 1 deletions
--- a/lib/MetaProcessor/InputValidator.cpp
+++ b/lib/MetaProcessor/InputValidator.cpp
@ -55,7 +55,7 @@ namespace cling {
        // If there is " or ' we don't need to look for balancing until we
        // enounter matching " or '
        Res = kIncomplete;
-        if (m_ParenStack.back() == kind) {
+        if (m_ParenStack.size() && m_ParenStack.back() == kind) {
          // We know that the top of the stack will have the leading quote or
          // apostophe because nobody is pushing onto it until we find a balance
          m_ParenStack.pop_back();