Bug 241470

Version:           unspecified (using Devel) 
OS:                Linux

I was testing a NPAPI plugin and used the new env var VALGRIND_NSPLUGINVIEWER to run it inside valgrind (thanks for this feature!).

The plugin went fine, but on exit of nspluginviewer, I saw the following valgrind messages.

To me it seems like that:
KCleanUpGlobalStatic calls a function on exit, which runs  KConfig::sync(), which tries to create e QTextCodec, which was already destroyed before inside Qt's destructors.

Command: /home/KDE4/bin/nspluginviewer -dbusservice org.kde.nspluginviewer-31115
...


==31123== Invalid read of size 4
==31123==    at 0x5C3806F: QTextCodec::codecForMib(int) (qatomic_i386.h:132)
==31123==    by 0x5C3C2DC: QIconvCodec::QIconvCodec() (qiconvcodec.cpp:96)
==31123==    by 0x5C374C7: setup() (qtextcodec.cpp:761)
==31123==    by 0x5C37695: QTextCodec::codecForLocale() (qtextcodec.cpp:1188)
==31123==    by 0x5B49776: QString::toLocal8Bit() const (qstring.cpp:3510)
==31123==    by 0x5B87489: locale_encode(QString const&) (qfile.cpp:71)
==31123==    by 0x5B8722A: QFile::encodeName(QString const&) (qfile.cpp:482)
==31123==    by 0x5BD6463: QFSFileEnginePrivate::nativeInitFileName() (qfsfileengine_unix.cpp:203)
==31123==    by 0x5BCEF5D: QFSFileEngine::QFSFileEngine(QString const&) (qfsfileengine.cpp:215)
==31123==    by 0x5B786F4: QAbstractFileEngine::create(QString const&) (qabstractfileengine.cpp:203)
==31123==    by 0x5B7D834: QDirPrivate::initFileEngine(QString const&) (qdir.cpp:328)
==31123==    by 0x5B839BB: QDirPrivate::setPath(QString const&) (qdir.cpp:160)
==31123==    by 0x5B7E128: QDir::QDir(QString const&) (qdir.cpp:527)
==31123==    by 0x5849463: KConfigIniBackend::createEnclosing() (kconfigini.cpp:528)
==31123==    by 0x5832301: KConfig::sync() (kconfig.cpp:297)
==31123==    by 0x5831880: KConfig::~KConfig() (kconfig.cpp:194)
==31123==    by 0x58AC469: KDebugPrivate::~KDebugPrivate() (kdebug.cpp:247)
==31123==    by 0x58AAE21: ._160::destroy() (kdebug.cpp:671)
==31123==    by 0x584D652: KCleanUpGlobalStatic::~KCleanUpGlobalStatic() (kglobal.h:62)
==31123==    by 0x5F99110: ??? (in /lib/libc-2.10.1.so)
==31123==    by 0x5F9916C: exit (in /lib/libc-2.10.1.so)
==31123==    by 0x5F81AD5: (below main) (in /lib/libc-2.10.1.so)
==31123==  Address 0x66b0110 is 8 bytes inside a block of size 32 free'd
==31123==    at 0x40265BD: operator delete(void*) (in /usr/lib/valgrind/vgpreload_memcheck-x86-linux.so)
==31123==    by 0x5B1C0D6: QHashData::free_helper(void (*)(QHashData::Node*)) (qhash.cpp:282)
==31123==    by 0x5C39143: QHash<int, QTextCodec*>::~QHash() (qhash.h:567)
==31123==    by 0x5F99110: ??? (in /lib/libc-2.10.1.so)
==31123==    by 0x5F9916C: exit (in /lib/libc-2.10.1.so)
==31123==    by 0x5F81AD5: (below main) (in /lib/libc-2.10.1.so)


Reproducible: Didn't try