toplev.c (main): A debug option without a level defaults to level 2.

        * toplev.c (main): A debug option without a level defaults to
        level 2.

From-SVN: r25884

gcc/ChangeLog

+Sun Mar 21 17:33:48 1999  Jeffrey A Law  (law@cygnus.com)
+
+	* toplev.c (main): A debug option without a level defaults to
+	level 2.
+
 Sun Mar 21 12:13:01 1999  Nick Clifton  <nickc@cygnus.com>
 
 	* flow.c (can_delete_label_p): Do not allow user specified

gcc/toplev.c

@@ -5128,8 +5128,20 @@ main (argc, argv)
 		      if (*p && (*p < '0' || *p > '9'))
 			continue;
 		      
-		      level = read_integral_parameter (p, 0,
-						       max_debug_level + 1);
+		      /* A debug flag without a level defaults to level 2.
+			 Note we do not want to call read_integral_parameter
+			 for that case since it will call atoi which 
+			 will return zero.
+
+			 ??? We may want to generalize the interface to 
+			 read_integral_parameter to better handle this case
+			 if this case shows up often.  */
+		      if (*p)
+			level = read_integral_parameter (p, 0,
+							 max_debug_level + 1);
+		      else
+			level = 2;
+
 		      if (da_len > 1 && !strncmp (str, "gdwarf", da_len))
 			{
 			  error ("use -gdwarf -g%d for DWARF v1, level %d",