Dear Phil, wishing you a successful and pleasable 2013.
You might want to look into the attached issue. It looks like it is a sip issue, althrough I wouldn't exclude PyKDE wrapper issues here... Cheers, Pete ---------- Weitergeleitete Nachricht ---------- Betreff: [Kde-bindings] problem with sip api 2 for QString Datum: Freitag, 28. Dezember 2012, 15:03:17 Von: Wolfgang Rohdewald <wolfg...@rohdewald.de> An: KDE bindings for other programming languages <kde-bindi...@kde.org> Hi, could somebody please have a look at bug 253123? https://bugs.kde.org/show_bug.cgi?id=253123 without this being fixed I will never be able to port the kde game kajongg to the new API. I want to change to the new API before trying the port to python3. re-tested again today: the full test script is: #!/usr/bin/env python3 import sip sip.setapi('QString', 2) from PyKDE4.kdeui import KConfigSkeleton a = KConfigSkeleton() name = 'tilesetName' value = 'I am a value' s = a.addItemString(name, value) print('s.value():', s.value()) # --------- this prints random garbage, accessing a freed object doing something similar with addItemInt works. it seems the code generated by sip frees the string value object when it should not (by calling sipReleaseType) I know nothing about sip, so I have no idea how to fix this. That bug was always there since I reported it in oct 2010, now I get it with pykde4-4.9.4 with both python 2.7.3 and python 3.2 - so it really is version independent. valgrind says ==6835== Invalid read of size 8 ==6835== at 0x99C74CB: QString::toUcs4() const (in /usr/lib/x86_64-linux-gnu/libQtCore.so.4.8.3) ==6835== by 0xF1B698F: ??? (in /usr/lib/python3/dist-packages/PyQt4/QtCore.cpython-32mu.so) ==6835== by 0x79CFB38: sip_api_convert_from_type (in /usr/lib/python3/dist-packages/sip.cpython-32mu.so) ==6835== by 0x1061B01B: meth_KCoreConfigSkeleton_ItemString_value (sipkdecorepart6.cpp:12455) ==6835== Address 0x112f4800 is 0 bytes inside a block of size 8 free'd ==6835== at 0x4C2A44B: operator delete(void*) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so) ==6835== by 0xF0FB872: ??? (in /usr/lib/python3/dist-packages/PyQt4/QtCore.cpython-32mu.so) ==6835== by 0x106361F4: meth_KCoreConfigSkeleton_addItemString (sipkdecorepart6.cpp:13726) extracts from sipkdecorepart6.cpp (generated on kubuntu with apt-get --compile source python-kde4): extern "C" {static PyObject *meth_KCoreConfigSkeleton_ItemString_value(PyObject *, PyObject *);} static PyObject *meth_KCoreConfigSkeleton_ItemString_value(PyObject *sipSelf, PyObject *sipArgs) { PyObject *sipParseErr = NULL; { KCoreConfigSkeleton::ItemString *sipCpp; if (sipParseArgs(&sipParseErr, sipArgs, "B", &sipSelf, sipType_KCoreConfigSkeleton_ItemString, &sipCpp)) { QString *sipRes; Py_BEGIN_ALLOW_THREADS sipRes = &sipCpp->value(); ----------------------- this is line 12455 Py_END_ALLOW_THREADS return sipConvertFromType(sipRes,sipType_QString,NULL); } } extern "C" {static PyObject *meth_KCoreConfigSkeleton_addItemString(PyObject *, PyObject *);} static PyObject *meth_KCoreConfigSkeleton_addItemString(PyObject *sipSelf, PyObject *sipArgs) { PyObject *sipParseErr = NULL; { const QString * a0; int a0State = 0; QString * a1; int a1State = 0; const QString& a2def = QLatin1String(""); const QString * a2 = &a2def; int a2State = 0; const QString& a3def = QString(); const QString * a3 = &a3def; int a3State = 0; KCoreConfigSkeleton *sipCpp; if (sipParseArgs(&sipParseErr, sipArgs, "BJ1J1|J1J1", &sipSelf, sipType_KCoreConfigSkeleton, &sipCpp, sipType_QString,&a0, &a0State, sipType_QString,&a1, &a1State, sipType_QString,&a2, &a2State, sipType_QString,&a3, &a3State)) { KCoreConfigSkeleton::ItemString *sipRes; Py_BEGIN_ALLOW_THREADS sipRes = sipCpp->addItemString(*a0,*a1,*a2,*a3); Py_END_ALLOW_THREADS sipReleaseType(const_cast<QString *>(a0),sipType_QString,a0State); sipReleaseType(a1,sipType_QString,a1State); ----------------------------------- this is line 13726 sipReleaseType(const_cast<QString *>(a2),sipType_QString,a2State); sipReleaseType(const_cast<QString *>(a3),sipType_QString,a3State); return sipConvertFromType(sipRes,sipType_KCoreConfigSkeleton_ItemString,NULL); } -- Wolfgang _______________________________________________ Kde-bindings mailing list kde-bindi...@kde.org https://mail.kde.org/mailman/listinfo/kde-bindings ------------------------------------------------------------- _______________________________________________ PyQt mailing list PyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
