Yes, you are right. I should dereference first. But now, the issue is,
who can explain why the wrong code could also invoke class' public
method via THIS->print() successfully.
_wrong code_ : $var = ($type) SvIV($arg);
On 8/17/05, Nicholas Clark <[EMAIL PROTECTED]> wrote:
> On Thu, Aug 11, 2005 at 11:55:49AM +0800, Dongxu Ma wrote:
>
> > According to typemap in ExtUtils and perl.h, casting IV to pointer
> > should be safe in this case, since on my machine(32bit, kernel
> > 2.6.12), sizeof(int) == 4, which is the same as a pointer. Does
> > anyone have any idea about this issue?
>
> I think that there's a bug in the typemap you're using:
>
> > -------------------------typemap-------------------------------
> > TYPEMAP
> > Test * T_OBJECT
> >
> > ################
> > INPUT
> > T_OBJECT
> > if(sv_isa($arg, \"Test\") && sv_isobject($arg)) {
> > $var = INT2PTR($type, SvIV($arg));
>
> SvIV(SvRV($arg))
> > } else {
> > warn(\"$arg is not a blessed object\");
> > XSRETURN_UNDEF;
> > }
>
>
> If I make the above change to use SvRV then I can avoid getting a segfault.
>
> Nicholas Clark
>
--
Bst Rgrs, Dongxu
