From f36e4e9a785e9c1d5bc6212589aa745f5ef487c0 Mon Sep 17 00:00:00 2001
From: Mihai Bazon <mihai@bazon.net>
Date: Wed, 6 Feb 2013 11:51:09 +0200
Subject: [PATCH] Give up evaluating (unary-prefix '-' 0)

Close #117

------

    JS, WHY YOU SUCK SO BADLY? ;-(
---
 lib/compress.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/lib/compress.js b/lib/compress.js
index fe3d34b6..ca23c40e 100644
--- a/lib/compress.js
+++ b/lib/compress.js
@@ -628,7 +628,10 @@ merge(Compressor.prototype, {
               case "typeof": return typeof ev(e);
               case "void": return void ev(e);
               case "~": return ~ev(e);
-              case "-": return -ev(e);
+              case "-":
+                e = ev(e);
+                if (e === 0) throw def;
+                return -e;
               case "+": return +ev(e);
             }
             throw def;
-- 
2.34.1