[Scummvm-tracker] [ScummVM :: Bugs] #15587: GUI: reducing the volume of a channel manually to zero produces a zero division

[ScummVM :: Bugs]

#15587: GUI: reducing the volume of a channel manually to zero produces a zero
division
------------------------+--------------------
Reporter:  neuromancer  |      Owner:  (none)
    Type:  defect       |     Status:  new
Priority:  normal       |  Component:  GUI
 Version:               |   Keywords:
    Game:               |
------------------------+--------------------
 Tested on the latest git branch (ae3bc057d5cd8058e62eb3994a4a8ac38fdc927e)

 Backtrace:

 {{{
 graphics/VectorRendererSpec.cpp:3234:43: runtime error: division by zero

 Thread 1 "scummvm" received signal SIGFPE, Arithmetic exception.
 0x00005555677be626 in Graphics::VectorRendererSpec<unsigned
 int>::drawBorderRoundedSquareAlg (this=0x50e0000122c0, x1=1314, y1=630,
 r=-2, w=3, h=54,
     color=4281888891, fill_m=Graphics::VectorRenderer::kFillGradient,
 alpha_t=255 '\377', alpha_r=255 '\377', alpha_b=255 '\377', alpha_l=255
 '\377')
     at graphics/VectorRendererSpec.cpp:3234
 3234                    int alphaStep_tr = ((alpha_t - alpha_r) / (y +
 1));
 (gdb) bt
 #0  0x00005555677be626 in Graphics::VectorRendererSpec<unsigned
 int>::drawBorderRoundedSquareAlg (this=0x50e0000122c0, x1=1314, y1=630,
 r=-2, w=3, h=54,
     color=4281888891, fill_m=Graphics::VectorRenderer::kFillGradient,
 alpha_t=255 '\377', alpha_r=255 '\377', alpha_b=255 '\377', alpha_l=255
 '\377')
     at graphics/VectorRendererSpec.cpp:3234
 #1  0x00005555677bc4c0 in Graphics::VectorRendererSpec<unsigned
 int>::drawRoundedSquareAlg (this=0x50e0000122c0, x1=1314, y1=630, r=1,
 w=3, h=54,
     color=4281888891, fill_m=Graphics::VectorRenderer::kFillGradient) at
 graphics/VectorRendererSpec.cpp:3519
 #2  0x0000555567668e60 in Graphics::VectorRendererSpec<unsigned
 int>::drawRoundedSquare (this=0x50e0000122c0, x=1314, y=630, r=1, w=3,
 h=54)
     at graphics/VectorRendererSpec.cpp:1269
 #3  0x0000555566083337 in Graphics::VectorRenderer::drawCallback_ROUNDSQ
 (this=0x50e0000122c0, area=..., step=...) at
 ./graphics/VectorRenderer.h:449
 #4  0x00005555675a56b9 in Graphics::VectorRenderer::drawStep
 (this=0x50e0000122c0, area=..., clip=..., step=..., extra=0) at
 graphics/VectorRenderer.cpp:59
 #5  0x0000555565fcc825 in GUI::ThemeEngine::drawDD (this=0x51e00006c080,
 type=GUI::kDDSliderHover, r=..., dynamic=0, forceRestore=false)
     at gui/ThemeEngine.cpp:953
 #6  0x0000555565fd14af in GUI::ThemeEngine::drawSlider
 (this=0x51e00006c080, r=..., width=3,
 state=GUI::ThemeEngine::kStateHighlight, rtl=false)
     at gui/ThemeEngine.cpp:1152
 #7  0x00005555660e0fc8 in GUI::SliderWidget::drawWidget
 (this=0x51200000a540) at gui/widget.cpp:930
 #8  0x00005555660aacb8 in GUI::Widget::draw (this=0x51200000a540) at
 gui/widget.cpp:138
 #9  0x00005555660ac2dd in GUI::Widget::draw (this=0x51300000de80) at
 gui/widget.cpp:158
 #10 0x0000555566233dfa in GUI::TabWidget::draw (this=0x51300000de80) at
 gui/widgets/tab.cpp:417
 #11 0x0000555565d0b6d5 in GUI::Dialog::drawWidgets (this=0x7fffeef5a820)
 at gui/dialog.cpp:192
 #12 0x0000555565d2cf11 in GUI::GuiManager::redrawInternal
 (this=0x51d0000d2080) at gui/gui-manager.cpp:471
 #13 0x0000555565d2d688 in GUI::GuiManager::redraw (this=0x51d0000d2080) at
 gui/gui-manager.cpp:488
 #14 0x0000555565d35864 in GUI::GuiManager::runLoop (this=0x51d0000d2080)
 at gui/gui-manager.cpp:661
 #15 0x0000555565d0666e in GUI::Dialog::runModal (this=0x7fffeef5a820) at
 gui/dialog.cpp:78
 #16 0x0000555565d6166c in GUI::LauncherDialog::editGame
 (this=0x52b00007e200, item=74) at gui/launcher.cpp:485
 #17 0x0000555565d69a10 in GUI::LauncherDialog::handleCommand
 (this=0x52b00007e200, sender=0x516000972218, cmd=1162105927, data=0) at
 gui/launcher.cpp:780
 #18 0x0000555565d8af7c in GUI::LauncherSimple::handleCommand
 (this=0x52b00007e200, sender=0x516000972218, cmd=1162105927, data=0) at
 gui/launcher.cpp:1358
 #19 0x0000555565cdcb7f in GUI::CommandSender::sendCommand
 (this=0x516000972218, cmd=1162105927, data=0) at ./gui/object.h:54
 #20 0x00005555660b8b3f in GUI::ButtonWidget::handleMouseUp
 (this=0x516000972080, x=206, y=54, button=1, clickCount=1) at
 gui/widget.cpp:416
 #21 0x0000555565d0db31 in GUI::Dialog::handleMouseUp (this=0x52b00007e200,
 x=3653, y=705, button=1, clickCount=1) at gui/dialog.cpp:233
 #22 0x0000555565d42fd8 in GUI::GuiManager::processEvent
 (this=0x51d0000d2080, event=..., activeDialog=0x52b00007e200) at gui/gui-
 manager.cpp:896
 #23 0x0000555565d3065e in GUI::GuiManager::runLoop (this=0x51d0000d2080)
 at gui/gui-manager.cpp:594
 #24 0x0000555565d5b5b8 in GUI::LauncherDialog::run (this=0x52b00007e200)
 at gui/launcher.cpp:345
 #25 0x0000555565d7839b in GUI::LauncherChooser::runModal
 (this=0x7fffeec62330) at gui/launcher.cpp:1064
 #26 0x0000555562d0338f in launcherDialog () at base/main.cpp:118
 #27 0x0000555562d172c6 in scummvm_main (argc=4, argv=0x7fffffffe708) at
 base/main.cpp:733
 --Type <RET> for more, q to quit, c to continue without paging--
 #28 0x0000555562cfa0f3 in main (argc=4, argv=0x7fffffffe708) at
 backends/platform/sdl/posix/posix-main.cpp:44
 }}}
-- 
Ticket URL: <https://bugs.scummvm.org/ticket/15587>
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