Fix out of boundary vector access

mgreter · mgreter · commit cbf4cb89e661 · 2019-11-04T20:30:05.000+01:00
Fixes #3031
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;

Original file line number	Diff line number	Diff line change
`@@ -142,6 +142,7 @@ namespace Sass {`
`142`	`142`	`// ##########################################################################`
`143`	`143`	`bool Extender::checkForUnsatisfiedExtends(Extension& unsatisfied) const`
`144`	`144`	`{`
	`145`	`+ if (selectors.empty()) return false;`
`145`	`146`	`ExtSmplSelSet originals = getSimpleSelectors();`
`146`	`147`	`for (auto target : extensions) {`
`147`	`148`	`SimpleSelector* key = target.first;`