[Freeciv-Dev] Re: newbie C question

[Raimar Falke <hawk@xxxxxxxxxxxxxxxxxxxxxxx>]

On Tue, Mar 05, 2002 at 02:07:25PM +0100, Per I. Mathisen wrote:
> On Tue, 5 Mar 2002, Raimar Falke wrote:
> >        [#10] If an object that has automatic  storage  duration  is
> >        not  initialized explicitly, its value is indeterminate.  If
> >        an  object  that  has  static  storage   duration   is   not
> >        initialized explicitly, then:
> >
> >           - if it has pointer type, it is  initialized  to  a  null
> >             pointer;
> 
> So,
>    b = &improvement_types[i];
>    b->terr_gate = fc_realloc((count + 1) * sizeof(b->terr_gate[0]));
> 
> will work, since
>    struct impr_type improvement_types[B_LAST];
> 
> is a global and b->terr_gate is initialized to NULL? That will solve most
> of the reloading problems in server/ruleset.c

Yes.

> But only until we drop the assumption that the number of buildings is
> constant and we malloc() improvements_types too...

Yes. However the malloced structs have to initialized in this case anyway.

        Raimar

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