GNU bug report logs - #16335
Segmentation fault when using cp -a with SELinux and fakeroot

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From: Pádraig Brady <P <at> draigBrady.com>
To: Bernhard Voelker <mail <at> bernhard-voelker.de>
Cc: nicolas.iooss <at> m4x.org, 16335 <at> debbugs.gnu.org
Subject: bug#16335: Segmentation fault when using cp -a with SELinux and fakeroot
Date: Mon, 13 Jan 2014 17:09:54 +0000

On 01/13/2014 03:27 PM, Bernhard Voelker wrote:
> On 01/13/2014 03:57 PM, Pádraig Brady wrote:
>> On 01/13/2014 02:50 PM, Pádraig Brady wrote:
>>> +# Then compile/link it:
>>> +$CC -shared -fPIC -O2 k.c -o k.so \
>>> +  || framework_failure_ 'failed to build SELinux shared library'
>>
>> I'll change that to a || skip_ ...
>> so that we avoid issues with no (stub) <selinux/selinux.h> being available.
> 
> LD_PRELOADed tests are sometimes a bit tricky, so doing
> double checks is a good idea: I'd add a
>   fclose(fopen("x"));
> inside the dummies, and check if that file has really been
> created. Otherwise, you can't be sure if replacing the functions
> really worked.

Right, I'll skip_ in that case to warn
about stale tests.

> Furthermore, when I added a LD_PRELOADed test a while ago,
> I think Paul suggested to add -ldl for some non-GNU/Linux
> platforms.

Right. I'll refactor all those calls to a gcc_shared_() for consistency.

> I'd also specify 'gcc' hardcoded ... probably with -Wall.

Hmm, icc and clang support this gcc interface,
so I'm inclined to leave it as $CC so as not
preclude those from this part of the testing matrix.
We can always beef up require_gcc_shared_() if
this ever becomes an issue.

thanks!
Pádraig.

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