Well, you certainly should not put non-arguments there. The line after "pdl* x" should declare the type of the "position" argument. It should not be some random bit of code about "pos", which is not one of the arguments.

The fact that it used to work is certainly an accident.

But the correct thing to do is not what you proposed but more like: 

SV *
at_c(x,position)
        pdl*    x
        SV*     position
    PREINIT:
        PDL_Long * pos;
    CODE:
        ...
    OUTPUT:
        RETVAL

[download]

Then you can also replace "ST(1)" with "position" in the code.

"The PREINIT: keyword allows extra variables to be declared immediately before or after the declarations of the parameters from the INPUT: section are emitted."

- tye        

In reply to Re: ExtUtils::ParseXS has changed (PREINIT:) by tye
in thread ExtUtils::ParseXS has changed by syphilis

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