fix corner case in merge_vars (#4158)

fixes #4157
2020-09-28 07:09:55 +01:00
parent 92d1391e5e
commit 9e07ac4102
2 changed files with 73 additions and 4 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -4448,15 +4448,16 @@ merge(Compressor.prototype, {
                push();
                segment.block = node;
                walk_body(node, tw);
+                pop();
                if (node.bcatch) {
                    var def = node.bcatch.argname.definition();
                    references[def.id] = false;
                    if (def = def.redefined()) references[def.id] = false;
-                    pop();
                    push();
+                    if (node.bfinally) segment.block = node.bcatch;
                    walk_body(node.bcatch, tw);
+                    pop();
                }
-                pop();
                if (node.bfinally) node.bfinally.walk(tw);
                return true;
            }