Fix out of boundary vector access

Fixes #3031
sass · Nov 4, 2019 · cbf4cb8 · cbf4cb8
1 parent a5226f4
commit cbf4cb8
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/extender.cpp b/src/extender.cpp
@@ -142,6 +142,7 @@ namespace Sass {
   // ##########################################################################
   bool Extender::checkForUnsatisfiedExtends(Extension& unsatisfied) const
   {
+    if (selectors.empty()) return false;
     ExtSmplSelSet originals = getSimpleSelectors();
     for (auto target : extensions) {
       SimpleSelector* key = target.first;