https://bugs.kde.org/show_bug.cgi?id=395028
Bug ID: 395028 Summary: Scrollbars without widget and styleObject cause crash (e.g. QtWebKit) Product: Breeze Version: 5.12.90 Platform: Other OS: Linux Status: UNCONFIRMED Severity: crash Priority: NOR Component: QStyle Assignee: unassigned-b...@kde.org Reporter: cf...@kde.org Target Milestone: --- https://cgit.kde.org/breeze.git/tree/kstyle/breezestyle.cpp#n5041 says: widget ? [...] : option->styleObject->property("hover").toBool() The preceeding comment seems to suggest that the code assumes QML if widget is 0. When both are 0, it causes a crash. Backtrace: #0 QObject::property (this=0x0, name=name@entry=0x7fffd74e7038 "hover") at kernel/qobject.cpp:3934 #1 0x00007fffd74c4110 in Breeze::Style::drawScrollBarSliderControl (this=0x1225ff0, option=0x7fffffffbc80, painter=0x7fff6a6d29e8, widget=0x0) at /usr/src/debug/breeze-5.13.80git.20180603T093531~47ca4e81-3.1.x86_64/kstyle/breezestyle.cpp:5041 #2 0x00007fffd74cc16f in std::function<bool (Breeze::Style const&, QStyleOption const*, QPainter*, QWidget const*)>::operator()(Breeze::Style const&, QStyleOption const*, QPainter*, QWidget const*) const (__args#3=<optimized out>, __args#2=<optimized out>, __args#1=<optimized out>, __args#0=..., this=0x7fffffffb9c0) at /usr/include/c++/7/bits/std_function.h:706 #3 Breeze::Style::drawControl (this=0x1225ff0, element=QStyle::CE_ScrollBarSlider, option=0x7fffffffbc80, painter=0x7fff6a6d29e8, widget=0x0) at /usr/src/debug/breeze-5.13.80git.20180603T093531~47ca4e81-3.1.x86_64/kstyle/breezestyle.cpp:937 #4 0x0000000000917eaf in Otter::Style::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const () #5 0x0000000000b39fcb in Otter::FreeDesktopOrgPlatformStyle::drawControl(QStyle::ControlElement, QStyleOption const*, QPainter*, QWidget const*) const () #6 0x00007ffff657e541 in QCommonStyle::drawComplexControl (this=this@entry=0x1225ff0, cc=cc@entry=QStyle::CC_ScrollBar, opt=opt@entry=0x7fffffffbe70, p=p@entry=0x7fff6a6d29e8, widget=widget@entry=0x0) at styles/qcommonstyle.cpp:3290 #7 0x00007fffd74ccf21 in Breeze::Style::drawScrollBarComplexControl (this=0x1225ff0, option=0x7fffffffbe70, painter=0x7fff6a6d29e8, widget=0x0) at /usr/src/debug/breeze-5.13.80git.20180603T093531~47ca4e81-3.1.x86_64/kstyle/breezestyle.cpp:6497 #8 0x00007fffd74ccb44 in std::function<bool (Breeze::Style const&, QStyleOptionComplex const*, QPainter*, QWidget const*)>::operator()(Breeze::Style const&, QStyleOptionComplex const*, QPainter*, QWidget const*) const (__args#3=<optimized out>, __args#2=<optimized out>, __args#1=<optimized out>, __args#0=..., this=0x7fffffffbe00) at /usr/include/c++/7/bits/std_function.h:706 #9 Breeze::Style::drawComplexControl (this=0x1225ff0, element=QStyle::CC_ScrollBar, option=0x7fffffffbe70, painter=0x7fff6a6d29e8, widget=0x0) at /usr/src/debug/breeze-5.13.80git.20180603T093531~47ca4e81-3.1.x86_64/kstyle/breezestyle.cpp:968 #10 0x00007ffff7bc39ae in WebKit::QStyleFacadeImp::paintScrollBar () at /usr/src/debug/libqt5-qtwebkit-5.212~alpha2-11.3.x86_64/Source/WebKit/qt/WidgetSupport/QStyleFacadeImp.cpp:473 -- You are receiving this mail because: You are watching all bug changes.