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Re: exit()/return() impacts valgrind leak checker


From: Jim Meyering
Subject: Re: exit()/return() impacts valgrind leak checker
Date: Fri, 4 Sep 2015 08:38:36 -0700

On Fri, Sep 4, 2015 at 6:43 AM, Pádraig Brady <address@hidden> wrote:
> On 09/09/14 10:50, Pádraig Brady wrote:
>> On 09/09/2014 04:55 AM, Paul Eggert wrote:
>>> I noticed other problems that are at least somewhat related to the
>>> recent coreutils multi-binary executable changes, and fixed some of
>>> these problems with the attached patches.
>>>
>>> Subject: [PATCH 3/4] maint: prefer 'return status;' to 'exit (status);' in 
>>> 'main'
>>> http://git.sv.gnu.org/gitweb/?p=coreutils.git;a=commitdiff;h=v8.23-19-g8defcee
>>
>> simpler so +1
>> There were a couple of syntax-check errors with this, fixed in
>> http://git.sv.gnu.org/gitweb/?p=coreutils.git;a=commitdiff;h=v8.23-21-g20f46a2
>
> Another caveat with using return() instead of exit()
> is that valgrind will now report mem allocated in main()
> as "definitely lost" as noted at http://stackoverflow.com/q/31622764/4421
>
> That precludes using this to auto flag mem leaks:
>   valgrind --leak-check=full --error-exitcode=1 
> --errors-for-leak-kinds=definite
>
> The attached patch explicitly free()s these allocations, in dev builds.

Looks fine. Nit in commit log: s/bnuilds/builds/
Thanks.



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