fix corner case in merge_vars (#4102)

fixes #4101
2020-09-15 12:18:12 +01:00
parent 3ac575f2e8
commit d64d0b0bec
2 changed files with 40 additions and 0 deletions
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -4403,6 +4403,17 @@ merge(Compressor.prototype, {
                mark(node);
                return true;
            }
+            if (node instanceof AST_Try) {
+                var save = segment;
+                segment = node;
+                node.body.forEach(function(branch) {
+                    branch.walk(tw);
+                });
+                if (node.bcatch) node.bcatch.walk(tw);
+                segment = save;
+                if (node.bfinally) node.bfinally.walk(tw);
+                return true;
+            }
            if (node instanceof AST_Unary) {
                if (!unary_arithmetic[node.operator]) return;
                var sym = node.expression;