From b55a2fd53113d70900c7cd96ad8cfdcc235629c2 Mon Sep 17 00:00:00 2001
From: "Alex Lam S.L" <alexlamsl@gmail.com>
Date: Fri, 19 Apr 2019 02:55:43 +0800
Subject: fix corner case in `functions` (#3367)

fixes #3366
---
 test/compress/functions.js | 31 +++++++++++++++++++++++++++++++
 test/sandbox.js            |  6 ++++--
 2 files changed, 35 insertions(+), 2 deletions(-)

(limited to 'test')

diff --git a/test/compress/functions.js b/test/compress/functions.js
index c43c17eb..7303b91b 100644
--- a/test/compress/functions.js
+++ b/test/compress/functions.js
@@ -2981,3 +2981,34 @@ issue_3364: {
     }
     expect_stdout: "2"
 }
+
+issue_3366: {
+    options = {
+        functions: true,
+        inline: true,
+        reduce_vars: true,
+        toplevel: true,
+        unused: true,
+    }
+    input: {
+        function f() {
+            function g() {
+                return function() {};
+            }
+            var a = g();
+            (function() {
+                this && a && console.log("PASS");
+            })();
+        }
+        f();
+    }
+    expect: {
+        (function() {
+            function a() {}
+            (function() {
+                this && a && console.log("PASS");
+            })();
+        })();
+    }
+    expect_stdout: "PASS"
+}
diff --git a/test/sandbox.js b/test/sandbox.js
index 23fb4fc9..396a08f1 100644
--- a/test/sandbox.js
+++ b/test/sandbox.js
@@ -73,8 +73,10 @@ exports.run_code = function(code, reuse) {
         process.stdout.write = original_write;
         if (!reuse || code.indexOf(".prototype") >= 0) {
             context = null;
-        } else for (var key in context) {
-            delete context[key];
+        } else {
+            vm.runInContext(Object.keys(context).map(function(name) {
+                return "delete " + name;
+            }).join("\n"), context);
         }
     }
 };
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<tr><td><span title='2021-02-19 20:10:08 +0100'>2021-02-19</span></td><td><a href='/guix/commit/gnu/tests.scm?id=f57b7cea748c1e8284373811c13398d9f69aec89'>tests: Export %simple-os.</a><span class='msg-avail'>...</span></td><td>Mathieu Othacehe</td></tr>
<tr><td><span title='2020-07-25 19:11:36 +0200'>2020-07-25</span></td><td><a href='/guix/commit/gnu/tests.scm?id=a5e2fc73760a2ae023f2e56bdbf8025971f90e64'>utils: Move &lt;location&gt; and '&amp;error-location' to (guix diagnostics).</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-03-05 16:33:37 +0100'>2020-03-05</span></td><td><a href='/guix/commit/gnu/tests.scm?id=c0b726c2112e0e670dc134583b376541c0a3789a'>tests: Add &lt;system-test&gt; gexp compiler.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>
<tr><td><span title='2020-01-23 11:26:55 +0100'>2020-01-23</span></td><td><a href='/guix/commit/gnu/tests.scm?id=f79313b3871ebe204c7b29fdb823666af06f48ff'>tests: Fix typo in comment.</a><span class='msg-avail'>...</span></td><td>Ludovic Courtès</td></tr>