| Summary: |
valgrind reports use of uninitialized values |
| Product: |
poppler
|
Reporter: |
oliver.sander |
| Component: |
general | Assignee: |
poppler-bugs <poppler-bugs> |
| Status: |
RESOLVED
FIXED
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QA Contact: |
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| Severity: |
minor
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|
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| Priority: |
medium
|
CC: |
oliver.sander
|
| Version: |
unspecified | |
|
| Hardware: |
Other | |
|
| OS: |
All | |
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| Whiteboard: |
|
|
i915 platform:
|
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i915 features:
|
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|---|
| Attachments: |
pdf file to trigger the error message
|
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Created attachment 133379 [details] pdf file to trigger the error message I am using Okular and poppler both from today's git master to show a simple pdf file generated by LibreOffice. Valgrind gives me a "Conditional jump or move depends on uninitialised value(s)" error. The error occurs in the method Object::free(), so this may be caused by the recent better_object merger. Complete valgrind trace: ==978== Memcheck, a memory error detector ==978== Copyright (C) 2002-2017, and GNU GPL'd, by Julian Seward et al. ==978== Using Valgrind-3.13.0 and LibVEX; rerun with -h for copyright info ==978== Command: /home/sander/okular-local-poppler-inst/bin/okular /home/sander/tmp/hallo-welt.pdf ==978== ==978== Thread 5 Okular::TextPage: ==978== Conditional jump or move depends on uninitialised value(s) ==978== at 0x23454341: Object::free() (Object.cc:129) ==978== by 0x23472C7F: setToNull (Object.h:177) ==978== by 0x23472C7F: XRef::copy() (XRef.cc:426) ==978== by 0x23459AE0: Page::displaySlice(OutputDev*, double, double, int, bool, bool, int, int, int, int, bool, bool (*)(void*), void*, bool (*)(Annot*, void*), void*, bool) (Page.cc:547) ==978== by 0x230DB57C: Poppler::Page::textList(Poppler::Page::Rotation) const (poppler-page.cc:587) ==978== by 0x22E5F8D9: PDFGenerator::textPage(Okular::Page*) (in /home/sander/okular-local-poppler-inst/lib/x86_64-linux-gnu/plugins/okular/generators/okularGenerator_poppler.so) ==978== by 0x1CA9F966: Okular::TextPageGenerationThread::run() (in /home/sander/okular-local-poppler/build/libOkular5Core.so.7.0.0) ==978== by 0x8A9AC27: ??? (in /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.7.1) ==978== by 0xAAE1493: start_thread (pthread_create.c:333) ==978== by 0x983EA8E: clone (clone.S:97) ==978== ==978== Thread 4 Okular::PixmapGe: ==978== Conditional jump or move depends on uninitialised value(s) ==978== at 0x23454341: Object::free() (Object.cc:129) ==978== by 0x23472C7F: setToNull (Object.h:177) ==978== by 0x23472C7F: XRef::copy() (XRef.cc:426) ==978== by 0x23459AE0: Page::displaySlice(OutputDev*, double, double, int, bool, bool, int, int, int, int, bool, bool (*)(void*), void*, bool (*)(Annot*, void*), void*, bool) (Page.cc:547) ==978== by 0x230DC222: Poppler::Page::renderToImage(double, double, int, int, int, int, Poppler::Page::Rotation) const (poppler-page.cc:369) ==978== by 0x22E5F34C: PDFGenerator::image(Okular::PixmapRequest*) (in /home/sander/okular-local-poppler-inst/lib/x86_64-linux-gnu/plugins/okular/generators/okularGenerator_poppler.so) ==978== by 0x1CA9F7FC: Okular::PixmapGenerationThread::run() (in /home/sander/okular-local-poppler/build/libOkular5Core.so.7.0.0) ==978== by 0x8A9AC27: ??? (in /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.7.1) ==978== by 0xAAE1493: start_thread (pthread_create.c:333) ==978== by 0x983EA8E: clone (clone.S:97) ==978== ==978== Thread 1: ==978== Syscall param writev(vector[...]) points to uninitialised byte(s) ==978== at 0x9836E4D: ??? (syscall-template.S:84) ==978== by 0xB6AC41C: ??? (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0) ==978== by 0xB6AC81C: ??? (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0) ==978== by 0xB6ACAB6: ??? (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0) ==978== by 0xB6AD2CB: xcb_flush (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0) ==978== by 0x139E5C9F: QXcbWindow::hide() (in /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.7.1) ==978== by 0x852EDAB: QWindow::setVisible(bool) (in /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.7.1) ==978== by 0x7F669F6: QWidgetPrivate::hide_sys() (in /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.7.1) ==978== by 0x7F6D03C: QWidgetPrivate::hide_helper() (in /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.7.1) ==978== by 0x7F71A5F: QWidget::setVisible(bool) (in /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.7.1) ==978== by 0x7F6D4D7: QWidgetPrivate::close_helper(QWidgetPrivate::CloseMode) (in /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.7.1) ==978== by 0x8099880: ??? (in /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5.7.1) ==978== Address 0x13417751 is 4,545 bytes inside a block of size 21,152 alloc'd ==978== at 0x4C2DC05: calloc (vg_replace_malloc.c:711) ==978== by 0xB6ABDCB: xcb_connect_to_fd (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0) ==978== by 0xB6AFD28: xcb_connect_to_display_with_auth_info (in /usr/lib/x86_64-linux-gnu/libxcb.so.1.1.0) ==978== by 0xB39FE89: _XConnectXCB (in /usr/lib/x86_64-linux-gnu/libX11.so.6.3.0) ==978== by 0xB390BC1: XOpenDisplay (in /usr/lib/x86_64-linux-gnu/libX11.so.6.3.0) ==978== by 0x139D06A4: QXcbConnection::QXcbConnection(QXcbNativeInterface*, bool, unsigned int, char const*) (in /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.7.1) ==978== by 0x139D3E5D: QXcbIntegration::QXcbIntegration(QStringList const&, int&, char**) (in /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5.7.1) ==978== by 0x40274AC: ??? (in /usr/lib/x86_64-linux-gnu/qt5/plugins/platforms/libqxcb.so) ==978== by 0x851042C: QPlatformIntegrationFactory::create(QString const&, QStringList const&, int&, char**, QString const&) (in /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.7.1) ==978== by 0x851E767: QGuiApplicationPrivate::createPlatformIntegration() (in /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.7.1) ==978== by 0x851F2EC: QGuiApplicationPrivate::createEventDispatcher() (in /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5.7.1) ==978== by 0x8C6DCCE: QCoreApplicationPrivate::init() (in /usr/lib/x86_64-linux-gnu/libQt5Core.so.5.7.1) ==978== No frame loaded No frame loaded No frame loaded ==978== ==978== HEAP SUMMARY: ==978== in use at exit: 381,719 bytes in 4,803 blocks ==978== total heap usage: 265,082 allocs, 260,279 frees, 109,539,013 bytes allocated ==978== ==978== LEAK SUMMARY: ==978== definitely lost: 7,416 bytes in 38 blocks ==978== indirectly lost: 9,681 bytes in 165 blocks ==978== possibly lost: 0 bytes in 0 blocks ==978== still reachable: 364,622 bytes in 4,600 blocks ==978== suppressed: 0 bytes in 0 blocks ==978== Rerun with --leak-check=full to see details of leaked memory ==978== ==978== For counts of detected and suppressed errors, rerun with: -v ==978== Use --track-origins=yes to see where uninitialised values come from ==978== ERROR SUMMARY: 71 errors from 3 contexts (suppressed: 0 from 0)