strange static object related crashes

Hi all,

Yesterday I spent quite some time with David Faure to figure out why I was 
getting so many crashes on the build server. I could get a backtrace for this 
command
  kpresenter --nocrashhandler --profile-filename feaifeo --benchmark-loading 
kofficetests/interoperability/kpresenter/MSPowerpoint2000/mp00_3d_bar_cylinder_chart.ppt

No-body was able to get the same crash. Running valgrind was not working 
because valgrind did not understand some assembler in Qt 4.7.0. So I 
recompiled Qt with the option 
  -no-sse2
Now valgrind did provide a backtrace (2nd one below). After recompiling koffice 
on this new Qt, the crash disappeared. I am posting this for reference.
  KDE 4.5.3, Qt 4.7.0 , KOffice trunk
  gcc (Ubuntu 4.4.3-4ubuntu5) 4.4.3
  
Cheers,
Jos

[Thread debugging using libthread_db enabled]
[New Thread 0xb1517b70 (LWP 1664)]
[Thread 0xb1517b70 (LWP 1664) exited]
[New Thread 0xb1517b70 (LWP 1665)]
[New Thread 0xb0bffb70 (LWP 1666)]
[Thread 0xb1517b70 (LWP 1665) exited]
[Thread 0xb0bffb70 (LWP 1666) exited]

Program received signal SIGSEGV, Segmentation fault.
0xb5f2b547 in _mm_andnot_si128 (data=0x80a9022, length=43)
    at /usr/lib/gcc/i486-linux-gnu/4.4.3/include/emmintrin.h:1239
1239      return (__m128i)__builtin_ia32_pandn128 ((__v2di)__A, (__v2di)__B);
#0  0xb5f2b547 in _mm_andnot_si128 (data=0x80a9022, length=43)
    at /usr/lib/gcc/i486-linux-gnu/4.4.3/include/emmintrin.h:1239
#1  toLatin1_helper (data=0x80a9022, length=43)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/tools/qstring.cpp:3516
#2  0xb5f2b803 in QString::toLatin1 (this=0xbfffed90)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/tools/qstring.cpp:3584
#3  0xb603abee in QIconvCodec::convertFromUnicode (this=0x80cb588, 
    uc=0x80a9022, len=43, convState=0x0)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/codecs/qiconvcodec.cpp:349
#4  0xb6034525 in QTextCodec::fromUnicode (this=0x80cb588, str=...)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/codecs/qtextcodec.cpp:1375
#5  0xb5f2b940 in QString::toLocal8Bit (this=0x81f6890)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/tools/qstring.cpp:3642
#6  0xb5f71034 in locale_encode (f=...)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/io/qfile.cpp:71
#7  0xb5f7202b in QFile::encodeName (fileName=...)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/io/qfile.cpp:482
#8  0xb5fc1674 in QFSFileEnginePrivate::nativeInitFileName (this=0x81f6880)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/io/qfsfileengine_unix.cpp:203
#9  0xb5fb9e65 in QFSFileEngine (this=0x80cb1b0, file=...)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/io/qfsfileengine.cpp:238
#10 0xb5f5f0be in QAbstractFileEngine::create (fileName=...)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/io/qabstractfileengine.cpp:203
#11 0xb5f76798 in QFileInfoPrivate::initFileEngine (this=0x80cb380, file=...)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/io/qfileinfo.cpp:73
#12 0xb5f77062 in QFileInfo (this=0xbffff02c, file=...)
    at /data/ko-devel/src/qt-everywhere-opensource-
src-4.7.0/src/corelib/io/qfileinfo.cpp:290
#13 0xb6209430 in KConfigIniBackend::createEnclosing (this=0x8092f58)
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/config/kconfigini.cpp:529
#14 0xb61f48db in KConfig::sync (this=0x809bea0)
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/config/kconfig.cpp:297
#15 0xb61f4d98 in ~KConfig (this=0x809bea0, __in_chrg=<value optimized out>)
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/config/kconfig.cpp:194
#16 0xb62107aa in ~KSharedConfig (this=0x809bea0, 
    __in_chrg=<value optimized out>)
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/config/ksharedconfig.cpp:74
#17 0xb62bc48a in KSharedPtr<KSharedConfig>::attach (this=0x8077ee0, 
    __in_chrg=<value optimized out>)
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/util/ksharedptr.h:214
#18 KSharedPtr<KSharedConfig>::operator= (this=0x8077ee0, 
    __in_chrg=<value optimized out>)
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/util/ksharedptr.h:97
#19 ~KComponentDataPrivate (this=0x8077ee0, __in_chrg=<value optimized out>)
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/kernel/kcomponentdata_p.h:56
#20 0xb62bc188 in KComponentDataPrivate::deref (this=0x805abc0, 
    __in_chrg=<value optimized out>)
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/kernel/kcomponentdata_p.h:74
#21 ~KComponentData (this=0x805abc0, __in_chrg=<value optimized out>)
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/kernel/kcomponentdata.cpp:123
#22 0xb62b8c08 in ~KGlobalPrivate ()
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/kernel/kglobal.cpp:92
#23 destroy ()
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/kernel/kglobal.cpp:116
#24 0xb62109cb in ~KCleanUpGlobalStatic (this=0xb6417810, 
    __in_chrg=<value optimized out>)
    at /home/ko-devel/src/kdelibs-4.5.3/kdecore/kernel/kglobal.h:62
#25 0xb5b35588 in __cxa_finalize (d=0xb64177e0) at cxa_finalize.c:56
#26 0xb61f0474 in __do_global_dtors_aux ()
   from /home/ko-devel/local/kde/lib/libkdecore.so.5
#27 0xb63da8c0 in _fini () from /home/ko-devel/local/kde/lib/libkdecore.so.5
#28 0xb7ff1216 in _dl_fini () at dl-fini.c:248
#29 0xb5b351bf in __run_exit_handlers (status=0, listp=0xb5c5c324, 
    run_list_atexit=true) at exit.c:78
#30 0xb5b3522f in *__GI_exit (status=0) at exit.c:100
#31 0xb5b1cbde in __libc_start_main (main=0x8048780 <main>, argc=6, 
    ubp_av=0xbffff6f4, init=0x80487c0 <__libc_csu_init>, 
    fini=0x80487b0 <__libc_csu_fini>, rtld_fini=0xb7ff1030 <_dl_fini>, 
    stack_end=0xbffff6ec) at libc-start.c:258
#32 0x080486e1 in _start ()


==9361== Invalid read of size 4
==9361==    at 0x47C952A: QBasicAtomicInt::deref() (qatomic_i386.h:132)
==9361==    by 0x605F116: QHash<int, QTextCodec*>::operator=(QHash<int, 
QTextCodec*> const&) (qhash.h:593)
==9361==    by 0x605E7CF: QHash<int, QTextCodec*>::clear() (qhash.h:574)
==9361==    by 0x605C415: QTextCodec::codecForMib(int) (qtextcodec.cpp:1086)
==9361==    by 0x606287A: QIconvCodec::QIconvCodec() (qiconvcodec.cpp:96)
==9361==    by 0x605BBAB: setup() (qtextcodec.cpp:808)
==9361==    by 0x605CB70: QTextCodec::codecForLocale() (qtextcodec.cpp:1239)
==9361==    by 0x5F542E0: QString::toLocal8Bit() const (qstring.cpp:3641)
==9361==    by 0x5F99887: locale_encode(QString const&) (qfile.cpp:71)
==9361==    by 0x5F9A87E: QFile::encodeName(QString const&) (qfile.cpp:482)
==9361==    by 0x5FE9EC7: QFSFileEnginePrivate::nativeInitFileName() 
(qfsfileengine_unix.cpp:203)
==9361==    by 0x5FE26B8: QFSFileEngine::QFSFileEngine(QString const&) 
(qfsfileengine.cpp:238)
==9361==  Address 0x703bc70 is 8 bytes inside a block of size 32 free'd
==9361==    at 0x4024931: operator delete(void*) (vg_replace_malloc.c:387)
==9361==    by 0x5F1EF4B: QHashData::free_helper(void (*)(QHashData::Node*)) 
(qhash.cpp:278)
==9361==    by 0x605F0CF: QHash<int, QTextCodec*>::freeData(QHashData*) 
(qhash.h:568)
==9361==    by 0x605E797: QHash<int, QTextCodec*>::~QHash() (qhash.h:284)
==9361==    by 0x63C71BE: __run_exit_handlers (exit.c:78)
==9361==    by 0x63C722E: exit (exit.c:100)
==9361==    by 0x63AEBDD: (below main) (libc-start.c:258)
==9361== 
==9361== Invalid read of size 4
==9361==    at 0x47C952A: QBasicAtomicInt::deref() (qatomic_i386.h:132)
==9361==    by 0x605EE62: QHash<QByteArray, 
QTextCodec*>::operator=(QHash<QByteArray, QTextCodec*> const&) (qhash.h:593)
==9361==    by 0x605E537: QHash<QByteArray, QTextCodec*>::clear() 
(qhash.h:574)
==9361==    by 0x605C0FC: QTextCodec::codecForName(QByteArray const&) 
(qtextcodec.cpp:1042)
==9361==    by 0x5FB42E8: QTextCodec::codecForName(char const*) 
(qtextcodec.h:67)
==9361==    by 0x605AF62: setupLocaleMapper() (qtextcodec.cpp:598)





-- 
Jos van den Oever, software architect
+49 391 25 19 15 53
http://kogmbh.com/legal/