http://bugzilla.novell.com/show_bug.cgi?id=931815
Bug ID: 931815
Summary: qt5 apps crash when starting
Classification: openSUSE
Product: openSUSE Factory
Version: 201505*
Hardware: Other
OS: Other
Status: NEW
Severity: Normal
Priority: P5 - None
Component: KDE4 Workspace
Assignee: kde-maintainers@suse.de
Reporter: jslaby@suse.com
QA Contact: qa-bugs@suse.de
Found By: ---
Blocker: ---
Whatever app which is now build against qt5 crashes when starting and loading
anything built against qt4.
An example is kdenlive. It is built against qt5:
$ ldd /usr/bin/kdenlive|grep -i qt.*core
libQt5Core.so.5 => /usr/lib64/libQt5Core.so.5 (0x00007fe9dffe6000)
And it loads, using dlopen, mlt filters, /usr/lib64/frei0r-1/facebl0r.so in
particular. But that is built against qt4:
$ ldd /usr/lib64/frei0r-1/facebl0r.so|grep -i qt.*core
libQtCore.so.4 => /usr/lib64/libQtCore.so.4 (0x00007fd416431000)
So it just crashes with SIGSEGV.
This can be easily emulated:
$ export LD_PRELOAD="libQt5Core.so.5 /usr/lib64/frei0r-1/facebl0r.so"
$ /bin/true
SIGSEGV
Or by:
$ cat dlo.c
#include
int main(void)
{
dlopen("/usr/lib64/frei0r-1/facebl0r.so", RTLD_NOW);
return 0;
}
$ cc -Wall -O2 -g dlo.c -ldl -o dlo
$ export LD_PRELOAD=" libQt5Core.so.5"
$ gdb ./dlo
...
(gdb) where
#0 QList (this=0x7fffee68f5d0 QTest::testFunctions) at
../../src/corelib/tools/qlist.h:121
#1 QStringList (this=0x7fffee68f5d0 QTest::testFunctions) at
../../src/corelib/tools/qstringlist.h:69
#2 __static_initialization_and_destruction_0 (__initialize_p=1,
__priority=65535) at qtestcase.cpp:1019
#3 _GLOBAL__sub_I_qtestcase.cpp(void) () at qtestcase.cpp:2312
#4 0x00007ffff7dea9fa in call_init (l=<optimized out>, argc=argc@entry=1,
argv=argv@entry=0x7fffffffdf08,
env=env@entry=0x7fffffffdf18) at dl-init.c:72
#5 0x00007ffff7deaae3 in call_init (env=0x7fffffffdf18, argv=0x7fffffffdf08,
argc=1, l=<optimized out>)
at dl-init.c:30
#6 _dl_init (main_map=main_map@entry=0x613d10, argc=1, argv=0x7fffffffdf08,
env=0x7fffffffdf18) at dl-init.c:120
#7 0x00007ffff7deec65 in dl_open_worker (a=a@entry=0x7fffffffdbd8) at
dl-open.c:558
#8 0x00007ffff7dea8b4 in _dl_catch_error
(objname=objname@entry=0x7fffffffdbc8,
errstring=errstring@entry=0x7fffffffdbd0,
mallocedp=mallocedp@entry=0x7fffffffdbc7,
operate=operate@entry=0x7ffff7dee9a0 ,
args=args@entry=0x7fffffffdbd8) at dl-error.c:187
#9 0x00007ffff7dee46b in _dl_open (file=0x4006d8
"/usr/lib64/frei0r-1/facebl0r.so", mode=-2147483646,
caller_dlopen=<optimized out>, nsid=-2, argc=1, argv=0x7fffffffdf08,
env=0x7fffffffdf18) at dl-open.c:642
#10 0x00007ffff7514fbb in dlopen_doit (a=a@entry=0x7fffffffddf0) at dlopen.c:66
#11 0x00007ffff7dea8b4 in _dl_catch_error (objname=0x613cc0,
errstring=0x613cc8, mallocedp=0x613cb8,
operate=0x7ffff7514f60 , args=0x7fffffffddf0) at
dl-error.c:187
#12 0x00007ffff751556d in _dlerror_run (operate=operate@entry=0x7ffff7514f60
,
args=args@entry=0x7fffffffddf0) at dlerror.c:163
#13 0x00007ffff7515051 in __dlopen (file=file@entry=0x4006d8
"/usr/lib64/frei0r-1/facebl0r.so", mode=mode@entry=2)
at dlopen.c:87
#14 0x0000000000400553 in main () at dlo.c:5
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