[asterisk-dev] [Code Review] va_args cleanup in res_config_odbc, res_config_curl, utils, and also res_config_pgsql
wdoekes
reviewboard at asterisk.org
Fri Apr 6 04:50:04 CDT 2012
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Thanks for picking this up. You can trim the patch size (and code readability) by a bit if you move some stuff around though:
/branches/1.8/res/res_config_odbc.c
<https://reviewboard.asterisk.org/r/1848/#comment10902>
Locality. You're not using cps.ap nor aq until a bit down. Consider moving the va_copy's to just before you need them. That'll save you lots of cleanup.
E.g.:
va_copy(cps.ap, ap);
stmt = bla(&cps)
va_end(cps.ap);
- wdoekes
On April 5, 2012, 12:53 p.m., jrose wrote:
>
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> This is an automatically generated e-mail. To reply, visit:
> https://reviewboard.asterisk.org/r/1848/
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> (Updated April 5, 2012, 12:53 p.m.)
>
>
> Review request for Asterisk Developers, Mark Michelson, wdoekes, and Matt Jordan.
>
>
> Summary
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>
> A number of va_copy operations weren't matched with a corresponding va_end in res_config_odbc. Also, there was a potential for va_end to be invoked twice on the same va_arg in utils, which would mean invoking va_end on an undefined variable... which is bad.
>
> va_end is removed from various functions in config_pgsql and config_curl since they aren't making their own copy. The invokers of those functions are responsible for calling va_end on them.
>
>
> This addresses bug ASTERISK-19451.
> https://issues.asterisk.org/jira/browse/ASTERISK-19451
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>
> Diffs
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>
> /branches/1.8/main/utils.c 361291
> /branches/1.8/res/res_config_curl.c 361291
> /branches/1.8/res/res_config_odbc.c 361291
> /branches/1.8/res/res_config_pgsql.c 361291
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> Diff: https://reviewboard.asterisk.org/r/1848/diff
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>
> Testing
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> None to speak of. It compiles, but I'm really not sure how to check for va_arg leaks and such. I'm not too worried about res_config_odbc and utils since those changes are pretty self-contained. The other changes should be fine too since the paramater ap in res_config_odbc isn't ended in any of the adapter functions there. I'm a little wary though that they should be copying to a new va_arg list instead like res_config_odbc does.
>
>
> Thanks,
>
> jrose
>
>
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