Add NULL pointer check before void_expr_error(); fix mruby#4192

ksekimoto · Dec 21, 2018 · 27acaa7 · 27acaa7
1 parent ed9c520
commit 27acaa7
Showing 1 changed file with 4 additions and 2 deletions.
diff --git a/mrbgems/mruby-compiler/core/parse.y b/mrbgems/mruby-compiler/core/parse.y
@@ -3664,8 +3664,10 @@ void_expr_error(parser_state *p, node *n)
     break;
   case NODE_AND:
   case NODE_OR:
-    void_expr_error(p, n->cdr->car);
-    void_expr_error(p, n->cdr->cdr);
+    if (n->cdr) {
+      void_expr_error(p, n->cdr->car);
+      void_expr_error(p, n->cdr->cdr);
+    }
     break;
   case NODE_BEGIN:
     if (n->cdr) {