[ace-users] regcomp, regexec, regfree Problems on Linux

[jhoffert at dre.vanderbilt.edu]

Hi, David.

I think you're right.

Thanks!

-Joe

>> -----Message d'origine-----
>> De : ace-users-bounces at cse.wustl.edu
>> [mailto:ace-users-bounces at cse.wustl.edu] De la part de
>> jhoffert at dre.vanderbilt.edu Envoyé : jeudi 27 septembre 2007 13:39 À :
>> ace-users at cse.wustl.edu Objet : Re: [ace-users] regcomp, regexec,
>> regfree Problems on Linux
>>
>> Hi, all.
>>
>> I modified the program that I sent out yesterday slightly so that the
>> problems go away. However, I don't understand why my changes make a
>> difference.
>>
>> I made the regex_t data member public, removed the call to regfree in
>> the destructor, and called
>> ::regfree(&matcher.regexp_) in main () right before the return
>> statement.
>>
>> Does anyone have any idea what the problem is?
>
>
> May be yes,
>
> You can see regex_t as a  pointer that must be delete only once
>
> We you pass "matcher" to remove_copy_if, it copy a local one.
> So two instance of RegexMatcher share the same regex_t pinter
>
> When remove_copy_if finish, the local RegexMatcher call is destructor that
> destroy is regexp_t (the same that is share  by the one in the main)
>
> When you go out of the main scope, your "matcher" call the destructor and
> regfree on the same regex_t value... So it core.
>
>
> Hope it clear.
>
>>
>> Thanks.
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