[patch] Initialize random variables

[Andrew Cagney <ac131313 at cygnus dot com>]

FYI,

I've checked in the attatched.  They fix a number of simple
--enable-gdb-warnings=-Werror,-Wuninitialized build problems.  I don't
think these will worry anyone.

I'll follow up with some extra fixes that do need some review.

	Andrew
Mon Nov 27 11:45:52 2000  Andrew Cagney  <cagney@b1.cygnus.com>

	* remote.c (remote_write_bytes): Add default case to switch
 	initializing ``todo''. Ditto for ``nr_bytes''.

 	* top.c (catch_errors): Always initialize ``val''.
	* solib.c (info_sharedlibrary_command): Handle bfd_get_arch_size
 	returning an unknown size.
	* gdbtypes.c (count_virtual_fns): Always initialize ``vfuncs''.
	* breakpoint.c (break_at_finish_at_depth_command_1): Initialise
 	extra_args to NULL.
	(break_at_finish_command_1): Ditto.
 
Index: breakpoint.c
===================================================================
RCS file: /cvs/src/src/gdb/breakpoint.c,v
retrieving revision 1.19
diff -p -r1.19 breakpoint.c
*** breakpoint.c	2000/10/30 15:32:51	1.19
--- breakpoint.c	2000/11/27 02:09:11
*************** break_at_finish_at_depth_command_1 (char
*** 4905,4911 ****
  {
    struct frame_info *frame;
    CORE_ADDR low, high, selected_pc = 0;
!   char *extra_args, *level_arg, *addr_string;
    int extra_args_len = 0, if_arg = 0;
  
    if (!arg ||
--- 4905,4913 ----
  {
    struct frame_info *frame;
    CORE_ADDR low, high, selected_pc = 0;
!   char *extra_args = NULL;
!   char *level_arg;
!   char *addr_string;
    int extra_args_len = 0, if_arg = 0;
  
    if (!arg ||
*************** break_at_finish_command_1 (char *arg, in
*** 4983,4989 ****
    struct symtabs_and_lines sals;
    struct symtab_and_line sal;
    struct cleanup *old_chain;
!   char *extra_args;
    int extra_args_len = 0;
    int i, if_arg = 0;
  
--- 4985,4991 ----
    struct symtabs_and_lines sals;
    struct symtab_and_line sal;
    struct cleanup *old_chain;
!   char *extra_args = NULL;
    int extra_args_len = 0;
    int i, if_arg = 0;
  
Index: gdbtypes.c
===================================================================
RCS file: /cvs/src/src/gdb/gdbtypes.c,v
retrieving revision 1.14
diff -p -r1.14 gdbtypes.c
*** gdbtypes.c	2000/09/02 00:05:02	1.14
--- gdbtypes.c	2000/11/27 02:09:17
*************** count_virtual_fns (struct type *dclass)
*** 1986,1991 ****
--- 1986,1993 ----
    struct type *pbc = primary_base_class (dclass);
    if (pbc)
      vfuncs = count_virtual_fns (pbc);
+   else
+     vfuncs = 0;
  
    for (fn = 0; fn < TYPE_NFN_FIELDS (dclass); fn++)
      for (oi = 0; oi < TYPE_FN_FIELDLIST_LENGTH (dclass, fn); oi++)
Index: remote.c
===================================================================
RCS file: /cvs/src/src/gdb/remote.c,v
retrieving revision 1.29
diff -p -r1.29 remote.c
*** remote.c	2000/11/20 02:06:18	1.29
--- remote.c	2000/11/27 02:09:38
*************** remote_write_bytes (CORE_ADDR memaddr, c
*** 3363,3369 ****
        todo = min (len, max_buf_size / 2);
        break;
      case PACKET_SUPPORT_UNKNOWN:
!       internal_error ("remote_write_bytes: bad switch");
      }
    
    /* Append <memaddr> */
--- 3363,3372 ----
        todo = min (len, max_buf_size / 2);
        break;
      case PACKET_SUPPORT_UNKNOWN:
!       internal_error ("%s:%d: remote_write_bytes: bad internal state",
! 		      __FILE__, __LINE__);
!     default:
!       internal_error ("%s:%d: bad switch", __FILE__, __LINE__);
      }
    
    /* Append <memaddr> */
*************** remote_write_bytes (CORE_ADDR memaddr, c
*** 3427,3433 ****
        *p = '\0';
        break;
      case PACKET_SUPPORT_UNKNOWN:
!       internal_error ("remote_write_bytes: bad switch");
      }
    
    putpkt_binary (buf, (int) (p - buf));
--- 3430,3439 ----
        *p = '\0';
        break;
      case PACKET_SUPPORT_UNKNOWN:
!       internal_error ("%s:%d: remote_write_bytes: bad internal state",
! 		      __FILE__, __LINE__);
!     default:
!       internal_error ("%s:%d: bad switch", __FILE__, __LINE__);
      }
    
    putpkt_binary (buf, (int) (p - buf));
Index: solib.c
===================================================================
RCS file: /cvs/src/src/gdb/solib.c,v
retrieving revision 1.28
diff -p -r1.28 solib.c
*** solib.c	2000/11/21 09:23:32	1.28
--- solib.c	2000/11/27 02:09:41
*************** info_sharedlibrary_command (char *ignore
*** 613,618 ****
--- 613,623 ----
        addr_width = 16 + 4;
        addr_fmt = "016l";
      }
+   else
+     {
+       internal_error ("%s:%d: bfd_get_arch_size() returned unknown size %d",
+ 		      __FILE__, __LINE__, arch_size);
+     }
  
    update_solib_list (from_tty, 0);
  
Index: top.c
===================================================================
RCS file: /cvs/src/src/gdb/top.c,v
retrieving revision 1.21
diff -p -r1.21 top.c
*** top.c	2000/11/16 14:51:50	1.21
--- top.c	2000/11/27 02:09:51
*************** catch_errors (catch_errors_ftype *func, 
*** 605,610 ****
--- 605,612 ----
    caught = SIGSETJMP (catch);
    if (!caught)
      val = (*func) (args);
+   else
+     val = 0;
    catch_return = saved_catch;
  
    /* FIXME: cagney/1999-11-05: A correct FUNC implementation will