re PR other/55982 (__strncat_chk is buggy)

2013-01-15  Paul Pluzhnikov  <ppluzhnikov@google.com>

	PR 55982
	* strncat-chk.c (__strncat_chk): Fix loop unroll.

From-SVN: r195207

libssp/ChangeLog

+2013-01-15  Paul Pluzhnikov  <ppluzhnikov@google.com>
+
+	PR 55982
+	* strncat-chk.c (__strncat_chk): Fix loop unroll.
+
 2012-09-14  David Edelsohn  <dje.gcc@gmail.com>
 
 	* configure: Regenerated.

libssp/strncat-chk.c

@@ -87,12 +87,6 @@ __strncat_chk (char *__restrict__ dest, const char *__restrict__ src,
           *++dest = c;
           if (c == '\0')
             return s;
-          if (slen-- == 0)
-            __chk_fail ();
-          c = *src++;
-          *++dest = c;
-          if (c == '\0')
-            return s;
         } while (--n4 > 0);
       n &= 3;
     }