fix reduce_vars on AST_Accessor (#2776)

fixes #2774
mishoo · Jan 12, 2018 · e49416e · e49416e
1 parent d4d7d99
commit e49416e
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diff --git a/lib/compress.js b/lib/compress.js
@@ -467,8 +467,9 @@ merge(Compressor.prototype, {
             if (node instanceof AST_SymbolRef) d.references.push(node);
             d.fixed = false;
         });
-        def(AST_Accessor, function(tw, descend) {
+        def(AST_Accessor, function(tw, descend, compressor) {
             push(tw);
+            reset_variables(tw, compressor, this);
             descend();
             pop(tw);
             return true;

diff --git a/test/compress/reduce_vars.js b/test/compress/reduce_vars.js
@@ -5276,3 +5276,29 @@ duplicate_lambda_defun_name_2: {
     }
     expect_stdout: "0"
 }
+
+issue_2774: {
+    options = {
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        console.log({
+            get a() {
+                var b;
+                (b = true) && b.c;
+                b = void 0;
+            }
+        }.a);
+    }
+    expect: {
+        console.log({
+            get a() {
+                var b;
+                (b = true) && b.c;
+                b = void 0;
+            }
+        }.a);
+    }
+    expect_stdout: "undefined"
+}