From: Mihai Bazon <mihai@bazon.net>
Date: Wed, 6 Feb 2013 09:51:09 +0000 (+0200)
Subject: Give up evaluating (unary-prefix '-' 0)
X-Git-Url: https://git.ndcode.org/public/gitweb.cgi?a=commitdiff_plain;h=f36e4e9a785e9c1d5bc6212589aa745f5ef487c0;p=UglifyJS.git

Give up evaluating (unary-prefix '-' 0)

Close #117

------

    JS, WHY YOU SUCK SO BADLY? ;-(
---

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;