Bug#873275: always segfaults at start due to QSslSocket

[Adrian Bunk]

Control: reopen -1
Control: severity -1 serious
Control: tags -1 - moreinfo
Control: tags -1 confirmed
Control: reassign -1 src:qt4-x11 4:4.8.7+dfsg-12
Control: affects -1 qgis

On Sat, Aug 26, 2017 at 08:45:21AM +0200, Sebastiaan Couwenberg wrote:
> tags 873275 unreproducible
> severity 873275 normal
> thanks
> 
> qgis works fine here.
> 
> On 08/26/2017 03:11 AM, 積丹尼 Dan Jacobson wrote:
> > -- System Information:
> > Debian Release: buster/sid
> >   APT prefers experimental
> 
> This likely caused your problem, you shouldn't prefer experimental over
> unstable.
>...

This is supposed to work when the dependencies allow it,[1]
and such bug reports can be quite valuable for finding regressions
before they hit a large userbase in unstable.

Likely causes for such problems include for example library ABI changes 
without a corresponding change of the so-name.

Based on the information in the bug it was in this case trivial to 
narrow the regression down to Qt4 in experimental switching to
OpenSSL 1.1 - qgis works for me with Qt4 from stable/unstable
and segfaults as describes by Dan with Qt4 from experimental.

> Kind Regards,
> 
> Bas

cu
Adrian

[1] apt preferring experimental is IMHO not a good idea,
    but that doesn't turn bugs into non-bugs

-- 

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        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed