Re^4: XS: exposing C++ library constant as package variable ( sv_setiv , SvIV

That suggests that get_sv() is returning an invalid SV*; which it shouldn't, if the docs are to be believed:

:) nope, its the call to SvIV_set thats causing it, solution i use is sv_setiv

    SV* const_sv = get_sv( "Soivro::SOIVRO", GV_ADD );
    sv_setiv( const_sv, FILENAME_MAX );
    SvREADONLY_on( const_sv );
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Re^5: XS: exposing C++ library constant as package variable ( sv_setiv , SvIV_set ) by ikegami (Patriarch) on Oct 09, 2015 at 05:27 UTC
It was crashing because you forgot to upgrade the scalar to one that has an IV slot before trying to change the IV slot. `sv_setiv` works because it performs the upgrade.	[reply] [d/l]
Re^6: XS: exposing C++ library constant as package variable ( sv_setiv , SvIV_set ) by wisnij (Novice) on Oct 14, 2015 at 16:19 UTC
Ah, now that is useful information; thanks. The Perl XS documentation was not very helpful in making it clear what the implicit preconditions for each function are, I'm afraid.	[reply]
Re^7: XS: exposing C++ library constant as package variable ( sv_setiv , SvIV_set ) by Anonymous Monk on Oct 15, 2015 at 00:36 UTC
see http://search.cpan.org/dist/illguts/index.html ,, it talks about upgrading ...	[reply]
Re^5: XS: exposing C++ library constant as package variable ( sv_setiv , SvIV_set ) by BrowserUk (Patriarch) on Oct 08, 2015 at 23:44 UTC
Thanks. Though it might have been better to address the information to the OP. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". I knew I was on the right track :) In the absence of evidence, opinion is indistinguishable from prejudice.	[reply]
Re^6: XS: exposing C++ library constant as package variable ( sv_setiv , SvIV_set ) by Anonymous Monk on Oct 08, 2015 at 23:51 UTC
Thanks. Though it might have been better to address the information to the OP. :) Maybe , but your node is why I poked at the problem, so thats where I put it	[reply]
Re^7: XS: exposing C++ library constant as package variable ( sv_setiv , SvIV_set ) by BrowserUk (Patriarch) on Oct 09, 2015 at 00:12 UTC
Maybe , but your node is why I poked at the problem, so thats where I put it Cool. Thanks for poking!	[reply]