[gnugo-devel] Re: patch: malloc(0) and array bound violation

[Teun Burgers]

See

http://lists.gnu.org/archive/html/gnugo-devel/2004-06/msg00110.html

This is still not fixed.

Paul wrote:

> -    free(list->pattern_list);
> -    free(list->pattern_heap);
> +    free(list->pattern_list); list->pattern_list = NULL;
> +    free(list->pattern_heap); list->pattern_heap = NULL;
>
> I assume this is done to make the function reentrant.  But I don't
> understand what for?

The free command leaves the address of the allocated memory intact.
The settings to NULL are not necessary, but just a precaution
against any future re-freeing or re-using freed memory.

Teun