[PyQt] PyQt snapshot debug info

Hans-Peter Jansen hpj at urpla.net
Mon Dec 6 13:59:11 GMT 2010 

On Monday 06 December 2010, 13:51:14 Phil Thompson wrote:
> On Sun, 5 Dec 2010 00:23:45 +0100, "Hans-Peter Jansen"
> <hpj at urpla.net>
>
> wrote:
> > Hi Phil,
> >
> > something changed related to the debugging symbols between the
> > 4.8.1 release and the current snapshot:
> >
> > + /usr/lib/rpm/find-debuginfo.sh
> > /usr/src/packages/BUILD/PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/bin/pyrcc4
>
> > extracting debug info from
> > /var/tmp/python-qt4-4.8.2-build/usr/bin/pylupdate4
> > WARNING: /usr/lib/qt4/plugins/designer/libpythonplugin.so is
> > already stripped!
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtGui.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtOpenGL.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/Qt.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtXmlPatterns.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtDeclarative.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtScript.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtCore.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtSvg.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtScriptTools.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtWebKit.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtHelp.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtSql.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtMultimedia.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtXml.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtNetwork.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/phonon.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtTest.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/PyQt4
>/QtDesigner.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.2-build/usr/lib/python2.6/site-packages/dbus/
>mainloop/qt.so
>
> > cpio:
> > PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/Auto-generated:
> > Cannot stat: No such file or directory
> > cpio:
> > PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipAPIQtCore
> >.h: Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractAnimation.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractEventDispatcher.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractFileEngine.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractFileEngineFileFlags.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractFileEngineHandler.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractFileEngineIterator.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractItemModel.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractListModel.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractState.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractTableModel.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAbstractTransition.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQAnimationGroup.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQBasicTimer.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQBitArray.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQBuffer.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQByteArray.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQByteArrayMatcher.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQChar_0.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQChar_1.cpp:
> > Cannot stat: No such file or directory
> > cpio:
>
> PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore/QtCore/sipQtCoreQChildEvent.cpp:
> > Cannot stat: No such file or directory
> > [...]
> >
> > in contrast to:
> >
> > + /usr/lib/rpm/find-debuginfo.sh
>
> /usr/src/packages/BUILD/PyQt-x11-gpl-4.8.1
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtWebKit.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtSvg.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtGui.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtCore.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtXml.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtDeclarative.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/phonon.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtHelp.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtOpenGL.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtScript.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtDesigner.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtScriptTools.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtXmlPatterns.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtSql.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtTest.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/Qt.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtNetwork.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/PyQt4
>/QtMultimedia.so
>
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/lib/python2.6/site-packages/dbus/
>mainloop/qt.so
>
> > WARNING: /usr/lib/qt4/plugins/designer/libpythonplugin.so is
> > already stripped!
> > extracting debug info from
> > /var/tmp/python-qt4-4.8.1-build/usr/bin/pylupdate4
> > extracting debug info from
>
> /var/tmp/python-qt4-4.8.1-build/usr/bin/pyrcc4
>
> > cpio: PyQt-x11-gpl-4.8.1/QtCore/Auto-generated: Cannot stat: No
> > such
>
> file
>
> > or directory
> > cpio: PyQt-x11-gpl-4.8.1/QtDeclarative/Auto-generated: Cannot stat:
> > No such file or directory
> > cpio: PyQt-x11-gpl-4.8.1/QtDesigner/Auto-generated: Cannot stat: No
> > such file or directory
> > cpio: PyQt-x11-gpl-4.8.1/QtGui/Auto-generated: Cannot stat: No such
> > file or directory
> > cpio: PyQt-x11-gpl-4.8.1/QtSql/Auto-generated: Cannot stat: No such
> > file or directory
> > cpio: PyQt-x11-gpl-4.8.1/QtWebKit/Auto-generated: Cannot stat: No
> > such file or directory
> > cpio: PyQt-x11-gpl-4.8.1/QtXml/Auto-generated: Cannot stat: No such
> > file or directory
> > cpio: PyQt-x11-gpl-4.8.1/qpy/QtCore/sipAPIQtCore.h: Cannot stat: No
> > such file or directory
> > cpio: PyQt-x11-gpl-4.8.1/qpy/QtDeclarative/sipAPIQtDeclarative.h:
> > Cannot stat: No such file or directory
> > cpio: glibc-2.9/cc-nptl/csu/crti.S: Cannot stat: No such file or
>
> directory
>
> > cpio: glibc-2.9/csu: Cannot stat: No such file or directory
> > cpio: glibc-2.9/csu/elf-init.c: Cannot stat: No such file or
> > directory cpio: glibc-2.9/csu/init.c: Cannot stat: No such file or
> > directory cpio: glibc-2.9/sysdeps/generic/initfini.c: Cannot stat:
> > No such file or directory
> > cpio: glibc-2.9/sysdeps/i386/elf/start.S: Cannot stat: No such file
> > or directory
> > 71787 blocks
> >
> > Before I start to dig, do you have any idea, what might have
> > changed to result in this behavior?
>
> I can't think of any changes in the build system that might have
> caused it.
>
> The only thing related to source files that has changed is that SIP
> now generates full pathnames for #line.

Hmm, that's probably the problem, as you don't always use absolute 
names.

QtCore/sipQtCoreQAbstractAnimation.cpp:

#line 38 "/usr/src/packages/BUILD/PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/sip/QtCore/qabstractanimation.sip"
#include <qabstractanimation.h>
#line 39 "QtCore/sipQtCoreQAbstractAnimation.cpp"
          ^^^^^^
#line 39 "/usr/src/packages/BUILD/PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/sip/QtCore/qobject.sip"
#include <qobject.h>
#line 43 "QtCore/sipQtCoreQAbstractAnimation.cpp"
#line 36 "/usr/src/packages/BUILD/PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/sip/QtCore/qcoreevent.sip"
#include <qcoreevent.h>
#line 46 "QtCore/sipQtCoreQAbstractAnimation.cpp"
#line 38 "/usr/src/packages/BUILD/PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/sip/QtCore/qanimationgroup.sip"
#include <qanimationgroup.h>
#line 49 "QtCore/sipQtCoreQAbstractAnimation.cpp"
#line 315 "/usr/src/packages/BUILD/PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/sip/QtCore/qcoreevent.sip"
#include <qcoreevent.h>
#line 52 "QtCore/sipQtCoreQAbstractAnimation.cpp"


Checking:
$ objdump -g QtCore/sipQtCoreQAbstractAnimation.o
[...]
The section .debug_info contains:

  Compilation Unit @ offset 0x0:
   Length:        0x13f0d (32-bit)
   Version:       2
   Abbrev Offset: 0
   Pointer Size:  4
 <0><b>: Abbrev Number: 1 (DW_TAG_compile_unit)
    < c>   DW_AT_producer    : (indirect string, offset: 0xd552): GNU C++ 4.3.2 [gcc-4_3-branch revision 141291]        
    <10>   DW_AT_language    : 4        (C++)
    <11>   DW_AT_name        : (indirect string, offset: 0xa879): sipQtCoreQAbstractAnimation.cpp       
    <15>   DW_AT_comp_dir    : (indirect string, offset: 0xd601): /usr/src/packages/BUILD/PyQt-x11-gpl-snapshot-4.8.2-24a6ba5f4f0f/QtCore       
    <19>   DW_AT_low_pc      : 0x0      
    <1d>   DW_AT_high_pc     : 0x1ed0   
    <21>   DW_AT_stmt_list   : 0x0      
[...]

These do not match, resulting in the effects shown above. 

Always using absolute paths probably solves this. What do you think?

Pete

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