Re: [Valgrind-developers] Setting fd number used by --log-file?

[Dan S. <dan...@go...>]

On 27 May 2012 01:29, Philippe Waroquiers <phi...@sk...> wrote:
> On Sun, 2012-05-27 at 01:20 +0200, Dan Shelton wrote:
>> Is there a way to set the fd number used by the --log-file number?
>> We've encountered serious trouble when we test the bash/dash/ksh
>> family of shells with valgrind, sometimes testing fails because there
>> are fds used by valgrind which are considered free by the shell.
> I understand that Valgrind should properly indicate to bash/dash/ksh
> the fd range which is usable.
>
> Valgrind reserves a part of the fd range for its own use.
> This reserved part should not be visible to the client
> (i.e. valgrind ensures that the syscall getrlimit
> returns a range not including the reserved for Valgrind).
>
> How is bash/... guessing that they can use such
> a reserved fd ?

We've guessed that because some of the tests have valgrind output
inside while we explicitly set --log-file. The best guess was that the
shell tests which have fd numbers hardcoded interfere with valgrinds
fd usage. But we might be wrong with that.
-- 
Dan Shelton