Bug #58327 for PGPLOT: "PGPLOT::HANDLE" used only once:

Thu Jun 10 21:22:39 2010 cphil [...] cpan.org - Ticket created

CC:	Chris.Phillips [...] csiro.au
Subject:	"PGPLOT::HANDLE" used only once:

Recent versions of perl (I am not sure, but I see this on Debian Etch and OSX Snow Leopard) give a warning each time perl is run: Name "PGPLOT::HANDLE" used only once: possible typo at /System/Library/Perl/5.10.0/darwin-thread-multi-2level/DynaLoader.pm line 230. The following patch seems to fix: 1435c1435 < sv_setiv(perl_get_sv("PGPLOT::HANDLE",TRUE|GV_ADDMULTI), (IV) (void*) &myPGPLOT_handle); --- Show quoted text

> sv_setiv(perl_get_sv("PGPLOT::HANDLE",TRUE), (IV) (void*)

&myPGPLOT_handle);

Tue Dec 14 23:41:31 2010 kgb [...] cpan.org - Correspondence added

On Thu Jun 10 21:22:39 2010, CPHIL wrote: Show quoted text

> Recent versions of perl (I am not sure, but I see this on Debian Etch > and OSX Snow Leopard) give a warning each time perl is run: > > Name "PGPLOT::HANDLE" used only once: possible typo at > /System/Library/Perl/5.10.0/darwin-thread-multi-2level/DynaLoader.pm > line 230. > > The following patch seems to fix: > > 1435c1435 > < sv_setiv(perl_get_sv("PGPLOT::HANDLE",TRUE|GV_ADDMULTI), (IV) > (void*) &myPGPLOT_handle); > ---

> > sv_setiv(perl_get_sv("PGPLOT::HANDLE",TRUE), (IV) (void*)

> &myPGPLOT_handle);

Thanks for that. Seems to work What does GV_ADDMULTI do?? Karl

Tue Dec 14 23:41:32 2010 The RT System itself - Status changed from 'new' to 'open'

Tue Dec 14 23:41:32 2010 kgb [...] cpan.org - Status changed from 'open' to 'patched'

Tue Dec 14 23:42:47 2010 Chris.Phillips [...] csiro.au - Correspondence added

CC:	"cphil [...] cpan.org" <cphil [...] cpan.org>
Subject:	Re: [rt.cpan.org #58327] "PGPLOT::HANDLE" used only once:
Date:	Wed, 15 Dec 2010 15:42:35 +1100
To:	"bug-PGPLOT [...] rt.cpan.org" <bug-PGPLOT [...] rt.cpan.org>
From:	Chris Phillips <Chris.Phillips [...] csiro.au>

No idea! I just googled the solution..... ------------------------------------------------------------ Chris Phillips CSIRO ATNF eVLBI project scientist Office: (+61) (0)2 93724608 Mobile: (+61) (0)439487601 On 15/12/2010, at 3:41 PM, Karl Glazebrook via RT wrote: Show quoted text

> <URL: https://rt.cpan.org/Ticket/Display.html?id=58327 > > > On Thu Jun 10 21:22:39 2010, CPHIL wrote:

>> Recent versions of perl (I am not sure, but I see this on Debian Etch >> and OSX Snow Leopard) give a warning each time perl is run: >> >> Name "PGPLOT::HANDLE" used only once: possible typo at >> /System/Library/Perl/5.10.0/darwin-thread-multi-2level/DynaLoader.pm >> line 230. >> >> The following patch seems to fix: >> >> 1435c1435 >> < sv_setiv(perl_get_sv("PGPLOT::HANDLE",TRUE|GV_ADDMULTI), (IV) >> (void*) &myPGPLOT_handle); >> ---

>>> sv_setiv(perl_get_sv("PGPLOT::HANDLE",TRUE), (IV) (void*)

>> &myPGPLOT_handle);

> > > Thanks for that. Seems to work > > What does GV_ADDMULTI do?? > > Karl > > >

Tue Dec 14 23:42:48 2010 The RT System itself - Status changed from 'patched' to 'open'

Sun Mar 17 11:15:01 2019 ETJ [...] cpan.org - Correspondence added

This was released by Karl in 2.21, in Jan 2011. GV_ADDMULTI notes at https://grokbase.com/t/perl/xs/084w994x1t/used-only-once-in-perl-5-10 say it's basically to tell Perl it's not just used once, i.e. its purpose is explicitly to turn off that warning.

Sun Mar 17 11:15:01 2019 ETJ [...] cpan.org - Status changed from 'open' to 'resolved'

Sun Mar 17 11:15:02 2019 ETJ [...] cpan.org - Fixed in 2.21 added