Re: PL/Perl Does not Like vstrings
От | David E. Wheeler |
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Тема | Re: PL/Perl Does not Like vstrings |
Дата | |
Msg-id | 8F0C5426-FC43-46E7-935A-BC0E50E268B2@justatheory.com обсуждение исходный текст |
Ответ на | Re: PL/Perl Does not Like vstrings (Andrew Dunstan <andrew@dunslane.net>) |
Ответы |
Re: PL/Perl Does not Like vstrings
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Список | pgsql-hackers |
On Jan 4, 2012, at 2:48 PM, Andrew Dunstan wrote: >> That's kinda grotty ... and leaky ... >> > > Of course it is. It wasn't meant as a solution but as validation of your suspicions about the nature of the problem. (Theleakiness could be solved, though.) From #p5p on irc.perl.org: [10:58pm]dg:interesting, so SvPV() handles string overloading, but SvPVutf8() doesn't, yet: "Like C<SvPV>, but converts svto utf8 first if necessary." [10:58pm]dg:oh, only for readonly objects [10:58pm]dg:probably why no-one has noticed, as version is probably the only readonly thing with string overloading [11:08pm]TonyC:it doesn't need string overloading [11:09pm]TonyC:https://gist.github.com/1562734 [11:12pm]TonyC:theory: using sv_mortalcopy() instead of newSVsv() should prevent the leak in that workaround, assuming there'sno FREETMPS between the call and use of the return value Useful? David
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