[QGIS-Developer] QtCreator does not start QGIS?

[Luigi Pirelli]

poposted workaround works with GDB... but I've different crashes using gdb
and lldb, probably more similar to that in runtime that caught by LLDB.
I'll investigate more

cheers

Luigi Pirelli

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On Mon, 23 Nov 2020 at 18:30, Matthias Kuhn <matthias at opengis.ch> wrote:

> Hi Luigi,
>
> This is an older issue, workaround here:
>
>
> http://osgeo-org.1560.x6.nabble.com/QGIS-Developer-Qtcreator-debug-issues-tp5389889p5389905.html
>
> Hope this helps and best wishes
> Matthias
>
> On Mon, Nov 23, 2020 at 6:26 PM Luigi Pirelli <luipir at gmail.com> wrote:
>
>> hmmmm... seems the same error happen with qt 5.12.8 (eg.. version with
>> ubuntu 20.04 LTR)
>>
>> src/core/qgsproviderregistry.cpp:261 : (init) [0ms] Checking ogr:
>> ...loaded OK (59 file filters)
>> src/core/auth/qgsauthmanager.cpp:180 : (init) [0ms] Initializing QCA...
>>
>> Thread 5 "QDBusConnection" received signal SIG33, Real-time event 33.
>> [Switching to Thread 0x7fffdaffd700 (LWP 285949)]
>> 0x00007ffff1e4baff in __GI___poll (fds=0x7fffd000eaf0, nfds=5,
>> timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
>> 29 ../sysdeps/unix/sysv/linux/poll.c: No such file or directory.
>>
>>
>> there is a workaround? I need to debug some crashes
>>
>> regards
>> Luigi Pirelli
>>
>>
>> **************************************************************************************************
>> * LinkedIn: https://www.linkedin.com/in/luigipirelli
>> * Stackexchange: http://gis.stackexchange.com/users/19667/luigi-pirelli
>> * GitHub: https://github.com/luipir
>> * Book: Mastering QGIS3 - 3rd Edition
>> <https://www.packtpub.com/eu/application-development/mastering-geospatial-development-qgis-3x-third-edition>
>> * Hire a team: http://www.qcooperative.net
>>
>> **************************************************************************************************
>>
>>
>> On Thu, 12 Nov 2020 at 18:00, Sandro Mani <manisandro at gmail.com> wrote:
>>
>>> Hi Richard
>>>
>>> If you are using Qt5.15.{0,1} and are getting random SIGTRAPS, or the
>>> process segfaulting straight after starting through gdb, this might be
>>> [1].
>>>
>>> Sandro
>>>
>>> [1] https://bugreports.qt.io/browse/QTBUG-86319
>>>
>>> On 12.11.20 15:45, Richard Duivenvoorde wrote:
>>> > Still having troubles starting QGIS in debug in QtCreator in my setup
>>> today.
>>> >
>>> > See https://duif.net/qc.png
>>> >
>>> > So QGIS (in QtCreator) starts, and during startup it stops and shows
>>> me the dissassembler(?) view. Sometimes I can see something (like in this
>>> screendump: something with libnss ?) sometimes all is white/empty.
>>> >
>>> > Last this I in the log is: "Destroyed while process ("whoami"), which
>>> according to git is recently changed but... does not seem related to me:
>>> >
>>> https://github.com/qgis/QGIS/commit/7a38388a8762503b0bdba55065fffea2ff24137a
>>> >
>>> > Regards,
>>> >
>>> > Richard
>>> >
>>> >
>>> >
>>> > On 11/11/20 9:16 AM, Richard Duivenvoorde wrote:
>>> >> Hi,
>>> >>
>>> >> Currently in my Qt build I cannot debug QGIS in qtcreator because it
>>> hangs/stops when showing the splash.
>>> >> After some time the Application Output shows:
>>> >>
>>> >> ../../src/core/qgsmessagelog.cpp:29 : (logMessage) [60891ms]
>>> [thread:0x5555560d9d00] 2020-11-11T08:58:15 [1] HTTP fetch
>>> https://feed.qgis.org/?after=1605081272&lang=en failed with error
>>> Operation canceled
>>> >> ../../src/core/qgsmessagelog.cpp:29 : (logMessage) [0ms]
>>> [thread:0x5555560d9d00] 2020-11-11T08:58:15 Network[1] Network request
>>> https://feed.qgis.org/?after=1605081272&lang=en timed out
>>> >>
>>> >> I am connected, and https://feed.qgis.org/?after=1605081272&lang=en
>>> is available from my browser.
>>> >>
>>> >> Disabling: 'Show QGIS news feed on welcome page' and 'Check QGIS
>>> version at startup' fix this.
>>> >>
>>> >> Others have this issue currently?
>>> >>
>>> >> (I hit my head also with this sometimes when in mixed/http proxied
>>> environments
>>> >> I still think we should use 'opt in' for these 'QGIS phoning home
>>> stuff' instead of 'opt out')
>>> >>
>>> >> Regards,
>>> >>
>>> >> Richard Duivenvoorde
>>> >>
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