|Summary:||dev-qt/qtwebengine-5.7.1-r1 - SEGV_MAPERR when built with GCC 6.3|
|Product:||Gentoo Linux||Reporter:||Daniele <dpenazzo91>|
|Component:||Current packages||Assignee:||Qt Bug Alias <qt>|
|Severity:||normal||CC:||gentoo.org, jbuchert+genbug, jstein|
|Package list:||Runtime testing required:||---|
TraceBack of the render crash
Description Daniele 2017-07-01 19:33:04 UTC
Created attachment 479156 [details] TraceBack of the render crash After building the latest webengine using GCC 6.3, I found that all the browsers based on this engine have their rendering process crash. After a bit of research, it seems it could be due to GCC 6.3's Pointer Check optimization. Here's the link to the changes page of GCC for ease of access https://gcc.gnu.org/gcc-6/changes.html I'm attaching the (probably useless) traceback I get from the rendering crash. Thank you for your attention.
Comment 1 Andreas Sturmlechner 2017-07-01 20:04:55 UTC
Comment 3 Daniele 2017-07-01 20:12:03 UTC
My apologies, I have no idea why I forgot it this time.
Comment 4 Daniele 2017-07-04 07:25:39 UTC
I tried rebuilding qtWebEngine as suggested by the GCC link, it seems that it didn't work. I'm going to merge it with USE+="debug" hoping to get a better traceback.
Comment 5 Daniele 2017-07-24 07:18:58 UTC
Seems that I did a typo in the build flags while trying to rebuild QtWebEngine, a seemingly working workaround is adding -fno-delete-null-pointer-checks to CFLAGS and CXXFLAGS I did so in my make.conf and rebuilt qtwebengine with emerge -1 qtwebengine Had no crashes so far.
Comment 6 jms 2017-09-19 11:27:18 UTC
Created attachment 495396 [details] emerge --info Portage 2.3.8 (python 3.4.5-final-0, default/linux/amd64/13.0/desktop/plasma, gcc-6.4.0, glibc-2.23-r4,
Comment 7 jms 2017-09-19 17:12:09 UTC
had the same problem with dev-qt/qtwebengine-5.7.1-r2 kde-apps/akonadi-17.08.1 kde-apps/libkgapi-17.08.1 when attempting to add a new gmail account the authentication screen appear briefly then become banlk/grey not possible to authenticate via interface rendered I suppose by qtwebengine. rebuilding libkgapi akonadi libkdepim kdepim-runtime kdepim-addons did not help rebuilding QtWebEngine with -fno-delete-null-pointer-checks to CFLAGS and CXXFLAGS in make.conf and rebuilding qtwebengine with emerge -1 qtwebengine did solve the problem thanks to Daniele please note I didn't try to rebuild dev-qt/qtwebengine-5.7.1-r2 without -fno-delete-null-pointer-checks added to to CFLAGS and CXXFLAGS
Comment 8 jms 2017-09-19 20:46:08 UTC
did try rebuilding without -fno-delete-null-pointer-checks won't work seems you need to have -fno-delete-null-pointer-checks for dev-qt/qtwebengine-5.7.1-r2 to works properly with gcc-6.4.0 (at least in order to be able to authenticate) gmail account with kmail/libkgapi)
Comment 9 Michael Palimaka (kensington) 2019-04-18 09:55:40 UTC
<GCC-6.4 is masked