2012/10/6 Junio C Hamano <gits...@pobox.com>:
> Ramsay Jones <ram...@ramsay1.demon.co.uk> writes:
>
>> The malloc checks can be disabled using the TEST_NO_MALLOC_CHECK
>> variable, either from the environment or command line of an
>> 'make test' invocation. In order to allow the malloc checks to be
>> disabled from the 'config.mak' file, we add TEST_NO_MALLOC_CHECK
>> to the environment using an export directive.
>
> We would want to encourage people to test with cheap but effective
> checks when available.  I do not see "malloc: using debugging hooks"
> message anywhere when I run tests, but if you do, I'd rather see us
> check if we can tell glibc to stop doing so first without disabling
> the whole test.  Your patch feels like the first step to a slipperly
> slope whose destination would make us say "we get too many messages
> so let's do nothing in "make test" with this configuration." when
> taken to the extreme, and obviously we would not want to go there
> ;-).
>
> Elia, you brought the MALLOC_CHECK_ up.  Did you hear about this
> issue elsewhere before, and if you did, do you know how other
> projects solves it?
Ok. I have found. For me this is not a problem any more these days.
Was fixed in glibc 2.8.90-9 2008

* Wed Jul 16 2008 Jakub Jelinek <ja...@redhat.com> 2.8.90-9
- update from trunk
  - fix unbuffered vfprintf if writing to the stream fails (#455360)
  - remove useless "malloc: using debugging hooks" message (#455355)
  - nscd fixes
(from glibc rpm changelog)

This is the bugzilla filled and closed
https://bugzilla.redhat.com/show_bug.cgi?id=455355

Ramsay, what version of glibc you have and in what distro? thanks
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