fix corner case in sequences (#4073)

2020-08-25 18:26:49 +01:00
parent a7e15fe73c
commit 09525c7530
3 changed files with 65 additions and 13 deletions
--- a/lib/ast.js
+++ b/lib/ast.js
@@ -288,10 +288,13 @@ var AST_LabeledStatement = DEFNODE("LabeledStatement", "label", {
            var label = node.label;
            var def = this.label;
            node.walk(new TreeWalker(function(node) {
-                if (node instanceof AST_LoopControl && node.label && node.label.thedef === def) {
+                if (node instanceof AST_LoopControl) {
+                    if (!node.label || node.label.thedef !== def) return;
                    node.label.thedef = label;
                    label.references.push(node);
+                    return true;
                }
+                if (node instanceof AST_Scope) return true;
            }));
        }
        return node;