Bug#742818: fix test failures when built with GCC 4.9

[Matthias Klose]

Am 28.03.2014 21:24, schrieb Niko Tyni:
> On Fri, Mar 28, 2014 at 01:54:02PM +0100, Matthias Klose wrote:
>> Am 28.03.2014 13:09, schrieb Niko Tyni:
>>> tag 742818 confirmed upstream
>>> thanks
>>>
>>> On Thu, Mar 27, 2014 at 08:03:42PM +0100, Matthias Klose wrote:
>>>> Package: perl
>>>> Version: 5.18.2-2
>>>> Severity: important
>>>> Tags: sid jessie patch
>>>>
>>>>    * Fix undefined behaviour in sv.c, resulting in test failures when
>>>>      built with GCC 4.9. Patch by Marek Polacek.
>>>>
>>>> patch at
>>>> http://launchpadlibrarian.net/170687513/perl_5.18.2-2_5.18.2-2ubuntu1.diff.gz
>>>
>>> Thanks. I've confirmed test failures with gcc-4.9 4.9-20140322-1 from
>>> experimental on both i386 and amd64. However, the above patch doesn't
>>> seem to fix them here. Could you verify it really works for you?
>>
>> I checked this with a test rebuild on trusty, which did succeed and didn't
>> fail the tests.
>>
>>> FWIW I added -Dcc=gcc-4.9 in debian/config.debian for testing.
>>> Are you replacing /usr/bin/gcc or something like that?
>>
>> yes, I installed the gcc-defaults packages from experimental.
>
> Sorry to be a bother, but I'm afraid I still can't get the test suite
> to pass with gcc-4.9 and the patch.
>
> I tried to build the actual 5.18.2-2ubuntu1 package in a trusty amd64
> chroot, with gcc_4:4.9-1exp1 and gcc-4.9_4.9-20140322-1 from Debian
> experimental. I'm still seeing
>
>   Failed 2 tests out of 2328, 99.91% okay.
>      op/numconvert.t
>      op/range.t
>
> Could you please supply a build log of a successful 5.18.2-2ubuntu1
> build with gcc-4.9 so I could try to find the difference?

attached.



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