bug#9273: 23.3; malloc initialization should (sometimes) happen at runtime

[Ken Brown <kbrown@cornell.edu>]

On 8/12/2011 2:54 AM, Eli Zaretskii wrote:
>> Date: Thu, 11 Aug 2011 17:45:41 -0400
>> From: Ken Brown<kbrown@cornell.edu>
>> CC: "9273@debbugs.gnu.org"<9273@debbugs.gnu.org>
>>
>> The problem was that realloc got called on memory that had been
>> allocated prior to dumping, and the malloc information that was used
>> then had disappeared.
>
> Can you show the code which called realloc on that memory?  I'm
> surprised that Emacs does that, but perhaps I'm missing something.

Here's the code that I stumbled across (as a result of a SEGV).  I 
haven't checked to see if there are other examples.  From terminal.c:

/* Deletes the bootstrap terminal device.
    Called through delete_terminal_hook. */

static void
delete_initial_terminal (struct terminal *terminal)
{
   if (terminal != initial_terminal)
     abort ();

   delete_terminal (terminal);
   initial_terminal = NULL;
}