fix corner cases in assignments, reduce_vars & unused (#3950)

fixes #3949 fixes #3951
2020-06-04 21:06:43 +01:00
parent a489f8cb5e
commit 04fd3d90f8
9 changed files with 317 additions and 75 deletions
--- a/test/compress/join_vars.js
+++ b/test/compress/join_vars.js
@@ -808,9 +808,9 @@ issue_3795: {
    }
    expect: {
        var a = "FAIL", d = function() {
-            if (a = 42, d) return -1;
+            if (void 0) return -1;
            a = "PASS";
-        }();
+        }(a = 42);
        console.log(a, d);
    }
    expect_stdout: "PASS undefined"