Re: Avoid using PL_na with newSVpv
[email protected] (Torsten Schoenfeld)
| Newsgroups | perl.xs |
|---|---|
| Message-ID | <[email protected]> |
On 25.09.2013 20:56, Jan Dubois wrote: > On Wed, Sep 25, 2013 at 11:50 AM, Torsten Schoenfeld > <[email protected]> wrote: >> >> newSVpv (string, PL_na) // do not do this > > Is this recomended anywhere? Probably not. But <http://grep.cpan.me/?q=newSVpv.*PL_na> does show quite a few hits, only roughly half of which are mine. Since the bugs this causes are hard to diagnose, I thought a public service announcement is appropriate. > Since this will always write the length of the string to PL_na, I > can't think of any reason why you would assume that PL_na would > always be zero. I think I simply assumed that "na" stood for "not available". So I took PL_na as a readability-improving alias for zero.