[PATCH] use memset to zero the fields of a new frame_info

[Michael Snyder <msnyder@cygnus.com>]

One call to memset does a better job than some number of individual assigns, 
esp. since it's guaranteed to get new fields that would be missed otherwise
(and were being).



2001-05-17  Michael Snyder  <msnyder@redhat.com>

        * blockframe.c (create_new_frame): Zero all the fields via memset,
        rather than zeroing them one by one.

Index: blockframe.c
===================================================================
RCS file: /cvs/cvsfiles/devo/gdb/blockframe.c,v
retrieving revision 1.111
diff -c -3 -p -r1.111 blockframe.c
*** blockframe.c        2001/05/09 00:19:04     1.111
--- blockframe.c        2001/05/17 19:59:08
*************** create_new_frame (CORE_ADDR addr, CORE_A
*** 219,228 ****
      obstack_alloc (&frame_cache_obstack,
                   sizeof (struct frame_info));
  
    /* Arbitrary frame */
-   fi->saved_regs = NULL;
-   fi->next = NULL;
-   fi->prev = NULL;
    fi->frame = addr;
    fi->pc = pc;
    find_pc_partial_function (pc, &name, (CORE_ADDR *) NULL, (CORE_ADDR *) NULL);
--- 219,227 ----
      obstack_alloc (&frame_cache_obstack,
                   sizeof (struct frame_info));
  
+   /* Zero all fields by default.  */
+   memset (fi, 0, sizeof (struct frame_info));
    /* Arbitrary frame */
    fi->frame = addr;
    fi->pc = pc;
    find_pc_partial_function (pc, &name, (CORE_ADDR *) NULL, (CORE_ADDR *) NULL);