Re: [Valgrind-developers] Shell fails when under valgrind-3.7.0's control with "--tool=none" ? ... / was: Fwd: ast-ksh.2012-05-18 failures in "arith.sh" when under valgrind control...

[Roland M. <rol...@nr...>]

On Wed, Jun 27, 2012 at 7:50 PM, Julian Seward <js...@ac...> wrote:
> On Wednesday, June 27, 2012, Roland Mainz wrote:
>> Does anyone remember any reasons why an application under control of $
>> valgrind --tool=none ... # can fail (valgrind version is 3.7.0)?
>> We're seeing the following failures (test script attached as
>> "ksh_valgrind_arith_sh_compound_var_arithmetic_failed.sh.txt") with
>> recent ksh93 versions and I'm not sure why it even fails with
>> "--tool=none" (if I remember it right applications should never fail
>> with --tool=none unless it's a valgrind bug... right ?) ...
>>
>> Steps to reproduce:
>> -- snip --
>> $ wget --http-user="I accept www.opensource.org/licenses/eclipse"
>> --http-passwd="."
>> 'http://www.research.att.com/sw/download/beta/INIT.2012-06-26.tgz'
>> $ wget --http-user="I accept www.opensource.org/licenses/eclipse"
>> --http-passwd="."
>> 'http://www.research.att.com/sw/download/beta/ast-ksh.2012-06-26.tgz'
>> $ gunzip -c <INIT.2012-06-26.tgz | tar -xf -
>> $ gunzip -c <ast-ksh.2012-06-26.tgz | tar -xf -
>> $ CC='gcc -g -ggdb -fno-builtin' ./bin/package make 2>&1 | tee -a
>> buildlog.log $ cd arch/*/bin
>> $ valgrind --tool=none ./ksh valgr_ksh_cmdsubfail.sh
>> ==23175== Nulgrind, the minimal Valgrind tool
>> ==23175== Copyright (C) 2002-2011, and GNU GPL'd, by Nicholas Nethercote.
>> ==23175== Using Valgrind-3.7.0 and LibVEX; rerun with -h for copyright info
>> ==23175== Command: /home/test001/bin/ksh valgr_ksh_cmdsubfail.sh
>> ==23175==
>> ==23178==
>> compound var arithmetic failed, expected '( bar=2 baz=3 foo=1 )', got ''
>> ==23179==
>> compound var arithmetic failed, expected '( faz=0 )', got ''
>> ==23180==
>> compound var arithmetic failed, expected '( foz=777 )', got ''
>> ==23181==
>> compound var arithmetic failed, expected '( foz=777 )', got ''
>> ==23182==
>> compound var arithmetic failed, expected '( fuz=777 )', got ''
>> ==23183==
>> compound var arithmetic failed, expected 0, got ''
>> ==23184==
>> compound var arithmetic failed, expected 0, got ''
>> ==23175==
>> -- snip --
>>
>> Any ideas/clues/etc. would be welcome...
[snip]
>
> A setuid related problem, maybe?  We have had those in the past.

No... the shell's tests run as plain user. No special setuid/setgid or
other priviledge stunts are used.

----

Bye,
Roland

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