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Re: plperl compiler warning

From: Andrew Dunstan <andrew(at)dunslane(dot)net>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Joe Conway <mail(at)joeconway(dot)com>, Tim Bunce <Tim(dot)Bunce(at)pobox(dot)com>, "Hackers (PostgreSQL)" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: plperl compiler warning
Date: 2010-01-28 19:47:35
Message-ID: 4B61E9D7.2040400@dunslane.net (view raw or flat)
Thread:
Lists: pgsql-hackers

Tom Lane wrote:
> Joe Conway <mail(at)joeconway(dot)com> writes:
>   
>> I pull directly from CVS, not git, but in any case my line 1117 is
>>       subref = newRV_inc((SV*)GvCVu((GV*)sub_glob));
>> so it appears to be the same
>>     
>
>   
>>> What perl version are you using?
>>> What compiler version are you using?
>>>       
>> I'm on stock Fedora 12:
>>     
>
> I see the same on Fedora 11.  The -E expansion of the line in question is
>
>    subref = Perl_newRV(((PerlInterpreter *)pthread_getspecific((*Perl_Gthr_key_ptr(((void *)0))))), (SV*)((((GV*)sub_glob)->sv_u.svu_gp)->gp_cvgen ? ((void *)0) : (((GV*)sub_glob)->sv_u.svu_gp)->gp_cv));
>
> so it's evidently unhappy about the fact that GvCVu can return null,
> while Perl_newRV is declared __attribute__((nonnull(2))).
>
> It looks to me like this is probably a live bug not just compiler
> hypersensitivity.
>
> 			
>   

It's on my F11 box too ... I guess it's time to upgrade my work machine, 
doesn't get reported by my usual setup.

Tim, any suggestions?

cheers

andrew





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