[Pkg-bluetooth-maintainers] Bug#856487: pulseaudio: SIGSEGV upon streaming to bluetooth headset

[Felipe Sateler]

On Sat, Mar 4, 2017 at 6:27 PM, Linus Lüssing <linus.luessing at c0d3.blue> wrote:
>> Are you sure it's definitely related to the gcc version? Did you actually
>> try rebuilding with gcc-4.9 on the target machine?
>>
>> The thing is that assembly code is not interpreted by gcc but by the assembler
>> which is part of the binutils package. Since binutils is updated
>> in Debian very often, it may be well related to a bug in binutils.
>
> I didn't try from a chroot, but tried 2.28 as you suggested as
> well as a few downgraded versions, which all failed:
>
> binutils 2.28-1 -> not
> binutils 2.27.51.20161220-1
> binutils 2.27-9 -> not working
> binutils 2.26-1 -> not working
> binutils 2.26.1-1 -> not working
> binutils 2.26-12 -> not working
>
> I also tried downgrading gcc-6, which didn't help either:
> gcc 6.0.1-2
>
> What worked then:
> * gcc 4.9.4-2 + binutils 2.26.1-1
> * gcc 4.9.4-2 + binutils 2.28-1
>

Thanks for the extensive testing!

> Not really familiar with how binaries get created or uploaded in
> Debian, but is it possible to determine the gcc + binutils
> versions with which libsbc 1.3-1 and 1.3-1+b2 were created? Just
> to double check whether the official uploads were indeed created
> with gcc-4.9 for libsbc 1.3-1 and gcc-5/gcc-6 for 1.3-1+b2?

The build logs are publicly available, for this build[1] the versions used were:

binutils_2.25-8
gcc-4.9_4.9.2-19

[1] https://buildd.debian.org/status/fetch.php?pkg=sbc&arch=armhf&ver=1.3-1&stamp=1433137735&raw=0


-- 

Saludos,
Felipe Sateler