From: Arnavion <arnavion@gmail.com>
Date: Sat, 13 Sep 2014 04:01:19 +0000 (-0700)
Subject: Don't warn for an unreferenced exception symbol in a catch block.
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=7be680d3f8fe0b17d01c8e4aea5a95dcb97b43c8;p=UglifyJS.git

Don't warn for an unreferenced exception symbol in a catch block.
---

diff --git a/lib/scope.js b/lib/scope.js
index 1ce17fa6..6f29921f 100644
--- a/lib/scope.js
+++ b/lib/scope.js
@@ -532,6 +532,7 @@ AST_Toplevel.DEFMETHOD("scope_warnings", function(options){
         }
         if (options.unreferenced
             && (node instanceof AST_SymbolDeclaration || node instanceof AST_Label)
+            && !(node instanceof AST_SymbolCatch)
             && node.unreferenced()) {
             AST_Node.warn("{type} {name} is declared but not referenced [{file}:{line},{col}]", {
                 type: node instanceof AST_Label ? "Label" : "Symbol",