Thank you very much !!!
On 8/7/05, Thomas Petazzoni <thomas.petazzoni@xxxxxxxx> wrote:
> Hi,
>
> Bob Smith a écrit :
>
> > Why is that ? I googled up reasons like minimizing return points,
> > but is that it ?
>
> Most of the time, 'goto' is used to minimize code duplication in error
> handling.
>
> Without 'goto':
>
> int myfunc (void)
> {
> ret = dosomething1();
> if (ret < 0)
> return ret;
>
> ret = dosomething2();
> if (ret < 0)
> {
> undosomething1();
> return ret;
> }
>
> ret = dosomething3();
> if (ret < 0)
> {
> undosomething2();
> undosomething1();
> return ret;
> }
>
> ret = dosomething4();
> if (ret < 0)
> {
> undosomething3();
> undosomething2();
> undosomething1();
> return ret;
> }
> return 0;
> }
>
> With 'goto':
>
> int myfunc(void)
> {
> ret = dosomething1()
> if (ret < 0)
> goto ret_dosomething1;
>
> ret = dosomething2()
> if (ret < 0)
> goto ret_dosomething2;
>
> ret = dosomething3()
> if (ret < 0)
> goto ret_dosomething3;
>
> ret = dosomething4()
> if (ret < 0)
> goto ret_dosomething4;
>
> ret_dosomething4:
> undosomething3();
> ret_dosomething3:
> undosomething2();
> ret_dosomething2:
> undosomething1();
> ret_dosomething1:
> return ret;
> }
>
> Sincerly,
>
> Thomas
> --
> PETAZZONI Thomas - thomas.petazzoni@xxxxxxxx
> http://thomas.enix.org - Jabber: thomas.petazzoni@xxxxxxxxx
> KOS: http://kos.enix.org/ - SOS: http://sos.enix.org
> Fingerprint : 0BE1 4CF3 CEA4 AC9D CC6E 1624 F653 CB30 98D3 F7A7
>
>
>
>
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