fix corner cases with `arguments` (#4520)

fixes #4519

1 files changed, 59 insertions, 1 deletions

diff --git a/test/compress/destructured.js b/test/compress/destructured.js
index 4f6a9f2f..029b4427 100644
--- a/test/compress/destructured.js
+++ b/test/compress/destructured.js
@@ -2189,7 +2189,7 @@ issue_4446: {
 
 issue_4456: {
     options = {
-        pure_getters: true,
+        pure_getters: "strict",
         unused: true,
     }
     input: {
@@ -2398,3 +2398,61 @@ issue_4512: {
     expect_stdout: "undefined"
     node_version: ">=6"
 }
+
+issue_4519_1: {
+    options = {
+        arguments: true,
+        keep_fargs: false,
+    }
+    input: {
+        try {
+            (function() {
+                var [ arguments ] = [];
+                arguments[0];
+            })();
+        } catch (e) {
+            console.log("PASS");
+        }
+    }
+    expect: {
+        try {
+            (function() {
+                var [ arguments ] = [];
+                arguments[0];
+            })();
+        } catch (e) {
+            console.log("PASS");
+        }
+    }
+    expect_stdout: "PASS"
+    node_version: ">=6"
+}
+
+issue_4519_2: {
+    options = {
+        pure_getters: "strict",
+        side_effects: true,
+    }
+    input: {
+        try {
+            (function() {
+                var [ arguments ] = [];
+                arguments[0];
+            })();
+        } catch (e) {
+            console.log("PASS");
+        }
+    }
+    expect: {
+        try {
+            (function() {
+                var [ arguments ] = [];
+                arguments[0];
+            })();
+        } catch (e) {
+            console.log("PASS");
+        }
+    }
+    expect_stdout: "PASS"
+    node_version: ">=6"
+}