fix corner case in merge_vars (#4116)

fixes #4115
2020-09-16 20:11:57 +01:00
parent 219aac6a84
commit 2a053710bd
2 changed files with 32 additions and 0 deletions
--- a/test/compress/merge_vars.js
+++ b/test/compress/merge_vars.js
@@ -486,3 +486,29 @@ issue_4112: {
    }
    expect_stdout: "function"
 }
+
+issue_4115: {
+    options = {
+        merge_vars: true,
+        toplevel: true,
+    }
+    input: {
+        L: {
+            var o = typeof console;
+            for (var k in o)
+                break L;
+            var a = 0;
+        }
+        console.log(typeof a);
+    }
+    expect: {
+        L: {
+            var o = typeof console;
+            for (var k in o)
+                break L;
+            var a = 0;
+        }
+        console.log(typeof a);
+    }
+    expect_stdout: "undefined"
+}