From d9344f30b83ecdfc8310ff43b9361c67cc85ec3e Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Sat, 11 Mar 2017 03:34:55 +0800
Subject: disallow parameter substitution for named IIFEs (#1596)

Self-referenced function has non-fixed values assigned to its parameters.

Let `unused` & `!keep_fnames` do the scanning, then apply `reduce_vars` only to unnamed functions.

fixes #1595
---
 test/compress/reduce_vars.js | 75 ++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 75 insertions(+)

(limited to 'test')

diff --git a/test/compress/reduce_vars.js b/test/compress/reduce_vars.js
index 734ce4ed..a5ab59f9 100644
--- a/test/compress/reduce_vars.js
+++ b/test/compress/reduce_vars.js
@@ -1252,3 +1252,78 @@ iife_func_side_effects: {
         })(x(), 0, z());
     }
 }
+
+issue_1595_1: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function f(a) {
+            return f(a + 1);
+        })(2);
+    }
+    expect: {
+        (function f(a) {
+            return f(a + 1);
+        })(2);
+    }
+}
+
+issue_1595_2: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function f(a) {
+            return g(a + 1);
+        })(2);
+    }
+    expect: {
+        (function(a) {
+            return g(a + 1);
+        })(2);
+    }
+}
+
+issue_1595_3: {
+    options = {
+        evaluate: true,
+        passes: 2,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function f(a) {
+            return g(a + 1);
+        })(2);
+    }
+    expect: {
+        (function(a) {
+            return g(3);
+        })();
+    }
+}
+
+issue_1595_4: {
+    options = {
+        evaluate: true,
+        reduce_vars: true,
+        unused: true,
+    }
+    input: {
+        (function iife(a, b, c) {
+            console.log(a, b, c);
+            if (a) iife(a - 1, b, c);
+        })(3, 4, 5);
+    }
+    expect: {
+        (function iife(a, b, c) {
+            console.log(a, b, c);
+            if (a) iife(a - 1, b, c);
+        })(3, 4, 5);
+    }
+}
-- 
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