#
# CVE-2011-2939
# http://perl5.git.perl.org/perl.git/commitdiff/e46d973584785af1f445c4dedbee4243419cb860#patch5
# https://bugzilla.redhat.com/show_bug.cgi?id=731246
#
--- perl-5.12.3/cpan/Encode/Unicode/Unicode.xs.old	2011-11-15 22:37:18.836023493 -0800
+++ perl-5.12.3/cpan/Encode/Unicode/Unicode.xs	2011-11-15 22:40:56.191609987 -0800
@@ -246,7 +246,10 @@
 	       This prevents allocating too much in the rogue case of a large
 	       input consisting initially of long sequence uft8-byte unicode
 	       chars followed by single utf8-byte chars. */
-	    STRLEN remaining = (e - s)/usize;
+	    /* +1 
+	       fixes  Unicode.xs!decode_xs n-byte heap-overflow
+	      */
+	    STRLEN remaining = (e - s)/usize + 1; /* +1 to avoid the leak */
 	    STRLEN max_alloc = remaining + (8*1024*1024);
 	    STRLEN est_alloc = remaining * UTF8_MAXLEN;
 	    STRLEN newlen = SvLEN(result) + /* min(max_alloc, est_alloc) */