Thu May 21 13:14:25 1998 John Metzler <jmetzler@cygnus.com>

[deliverable/binutils-gdb.git] / gdb / command.c

diff --git a/gdb/command.c b/gdb/command.c
index bd5c1231db0414535c4785779fc4c8c5eb392a90..8109b937540990545e0f9c46207cea58ecedee7e 100644 (file)
--- a/gdb/command.c
+++ b/gdb/command.c
@@ -281,7 +281,6 @@ add_set_enum_cmd (name, class, enumlist, var, doc, list)
 {
   struct cmd_list_element *c
     = add_set_cmd (name, class, var_enum, var, doc, list);
-
   c->enums = enumlist;
 
   return c;
@@ -1269,8 +1268,23 @@ do_setshow_command (arg, from_tty, c)
            char *match = NULL;
            char *p;
 
-           p = strchr (arg, ' ');
+           /* if no argument was supplied, print an informative error message */
+           if (arg == NULL)
+             {
+               char msg[1024];
+               strcpy (msg, "Requires an argument. Valid arguments are ");
+               for (i = 0; c->enums[i]; i++)
+                 {
+                   if (i != 0)
+                     strcat (msg, ", ");
+                   strcat (msg, c->enums[i]);
+                 }
+               strcat (msg, ".");
+               error (msg);
+             }
 
+           p = strchr (arg, ' ');
+           
            if (p)
              len = p - arg;
            else