enhance dead_code (#3849)

2020-05-05 22:02:35 +01:00
parent 66ab2df97f
commit 34ead0430b
2 changed files with 22 additions and 0 deletions
--- a/test/compress/dead-code.js
+++ b/test/compress/dead-code.js
@@ -1151,3 +1151,20 @@ issue_3830_6: {
    }
    expect_stdout: "PASS"
 }
+
+redundant_assignments: {
+    options = {
+        dead_code: true,
+    }
+    input: {
+        var a = a = "PASS", b = "FAIL";
+        b = b = "PASS";
+        console.log(a, b);
+    }
+    expect: {
+        var a = "PASS", b = "FAIL";
+        b = "PASS";
+        console.log(a, b);
+    }
+    expect_stdout: "PASS PASS"
+}