Fix segfault on empty custom properties

Originally reported in sass/sassc#225 Fixes sass/sassc#225 Spec sass/sass-spec#1249
sass · Apr 16, 2018 · e351212 · e351212
1 parent 27d5026
commit e351212
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/src/expand.cpp b/src/expand.cpp
@@ -246,7 +246,8 @@ namespace Sass {
       std::string str(prop->to_string(ctx.c_options));
       new_p = SASS_MEMORY_NEW(String_Constant, old_p->pstate(), str);
     }
-    Expression_Obj value = d->value()->perform(&eval);
+    Expression_Obj value = d->value();
+    if (value) value = value->perform(&eval);
     Block_Obj bb = ab ? operator()(ab) : NULL;
     if (!bb) {
       if (!value || (value->is_invisible() && !d->is_important())) return 0;