fix assignment logic in reduce_vars (#2872)

fixes #2869
2018-02-03 01:33:09 +08:00
parent b16380d669
commit e773f03927
2 changed files with 32 additions and 6 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -710,19 +710,19 @@ merge(Compressor.prototype, {
        def(AST_VarDef, function(tw, descend) {
            var node = this;
            var d = node.name.definition();
-            if (safe_to_assign(tw, d, node.value)) {
-                if (node.value) {
+            if (node.value) {
+                if (safe_to_assign(tw, d, node.value)) {
                    d.fixed = function() {
                        return node.value;
                    };
                    tw.loop_ids[d.id] = tw.in_loop;
                    mark(tw, d, false);
                    descend();
+                    mark(tw, d, true);
+                    return true;
+                } else {
+                    d.fixed = false;
                }
-                mark(tw, d, true);
-                return true;
-            } else if (node.value) {
-                d.fixed = false;
            }
        });
        def(AST_While, function(tw) {