fix corner case in keep_fargs (#3620)

fixes #3619
2019-12-02 12:28:17 +08:00
parent 9a6faf365b
commit bef856addb
2 changed files with 31 additions and 2 deletions
--- a/test/compress/keep_fargs.js
+++ b/test/compress/keep_fargs.js
@@ -1425,3 +1425,33 @@ recursive_iife_3: {
    }
    expect_stdout: "PASS"
 }
+
+issue_3619: {
+    options = {
+        keep_fargs: false,
+        unused: true,
+    }
+    input: {
+        var a = 1, b = "FAIL";
+        (function f(c, d) {
+            function g() {
+                d && (b = "PASS", 0 <= --a && g());
+                0 <= --a && f(0, "function");
+            }
+            g();
+        })();
+        console.log(b);
+    }
+    expect: {
+        var a = 1, b = "FAIL";
+        (function f(c, d) {
+            function g() {
+                d && (b = "PASS", 0 <= --a && g());
+                0 <= --a && f(0, "function");
+            }
+            g();
+        })();
+        console.log(b);
+    }
+    expect_stdout: "PASS"
+}