...has a pointless typemap entry for 'PDL_Long *'... has no INPUT or OUTPUT ...

I don't think there is any tricking going on

The default typemap has 

T_PTR
    $var = INT2PTR($type,SvIV($arg))

[download]

I don't think it needs INPUT/OUTPUT

Since PDL_Long * pos is the RETVAL, and the return type is SV*, you need a typemap entry

You might not need it if you specified T_PTR as return type 

T_PTR
at_c(x,position)
   pdl*    x
   PDL_Long * pos = NO_INIT
   CODE:
    // code that does stuff
    OUTPUT:
     RETVAL

[download]

I would test it, but, PDL takes a while to compile :)

In reply to Re^3: ExtUtils::ParseXS has changed by Anonymous Monk
in thread ExtUtils::ParseXS has changed by syphilis

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