genattrtab.c (simplify_knowing): Fix uninitialized read in Feb 21 change.

        * genattrtab.c (simplify_knowing): Fix uninitialized read
        in Feb 21 change.

From-SVN: r25472

gcc/ChangeLog

+Fri Feb 26 15:33:45 1999  Richard Henderson  <rth@cygnus.com>
+
+	* genattrtab.c (simplify_knowing): Fix uninitialized read
+	in Feb 21 change.
+
 Fri Feb 26 02:24:57 1999  Jeffrey A Law  (law@cygnus.com)
 
 	* c-pragma.c (add_weak); Delete.  Moved into...

gcc/genattrtab.c

@@ -2214,7 +2214,7 @@ simplify_knowing (exp, known_true)
 {
   if (GET_CODE (exp) != CONST_STRING)
     {
-      int unknown, max;
+      int unknown = 0, max;
       max = max_attr_value (exp, &unknown);
       if (! unknown)
 	{