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/test/compress/reduce_vars.js
+++ b/test/compress/reduce_vars.js
@@ -5507,3 +5507,29 @@ issue_2860_2: {
    }
    expect_stdout: "1"
 }
+
+issue_2869: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+    }
+    input: {
+        var c = "FAIL";
+        (function f(a) {
+            var a;
+            if (!f) a = 0;
+            if (a) c = "PASS";
+        })(1);
+        console.log(c);
+    }
+    expect: {
+        var c = "FAIL";
+        (function f(a) {
+            var a;
+            if (!f) a = 0;
+            if (a) c = "PASS";
+        })(1);
+        console.log(c);
+    }
+    expect_stdout: "PASS"
+}