Crash in widgets example

[arl]

 $ git rev-parse HEAD
941f2e7b6e6fcabd4adaad5180a1c2591908d871
 $ cd examples/widgets
 $ make build
go build -v
 $ ./widgets |& pp
Received button signal: ButtonPressed from button: button2
Received button signal: ButtonReleased from button: button2
Received button signal: ButtonClicked from button: button2
panic: runtime error: invalid memory address or nil pointer dereference
[signal SIGSEGV: segmentation violation code=0x1 addr=0x3b0 pc=0x5adb5b]


To see all goroutines, visit https://github.com/maruel/panicparse#gotraceback

1: running [Created by gi.(*Window).GoStartEventLoop @ window.go:863]
    ki  node.go:1672      (*Node).FuncDownMeFirst(#11, 0x1, 0, 0, 0x130d548)
    ki  node.go:1930      (*Node).UpdateEnd(#11, 0xc0024ed701)
    ki  node.go:2031      (*Node).SetField(#11, 0x10d72a4, 0x4, #2, #15, 0, 0)
    giv valueview.go:623  (*ValueViewBase).SetValue(#14, #2, #15, #2)
    giv basicviews.go:797 (*BitFlagView).SetEnumValueFromInt(#14, 0x4006, #2)
    giv basicviews.go:831 (*BitFlagView).ConfigWidget.func1(0x14dcb20, #14, #5, #12, 0x1, #1, #8)
    ki  signal.go:173     (*Signal).Emit(0xc000b83480, #5, #12, 0x1, #1, #8)
    gi  buttonbox.go:167  (*ButtonBox).ConfigItems.func1(#5, #12, #6, #10, 0x3, 0, 0)
    ki  signal.go:173     (*Signal).Emit(0xc0009c2b98, #6, #10, 0x3, 0, 0)
    gi  buttons.go:333    (*ButtonBase).BaseButtonRelease(#10)
    gi  buttons.go:902    (*CheckBox).ButtonRelease(#10)
    gi  buttons.go:454    (*ButtonBase).MouseEvent.func1(#6, #10, #7, #13, 0, #3, #9)
    gi  events.go:116     (*WinEventRecv).Call(0xc000b6fdb8, #7, #13, 0, #3, #9)
    gi  events.go:225     (*EventMgr).SendEventSignal(0xc000bbe198, #4, #9, 0x1)
    gi  window.go:1534    (*Window).ProcessEvent(#13, #4, #9)
    gi  window.go:1456    (*Window).EventLoop(#13)

[rcoreilly]

thanks for the report -- what were you doing when it crashed? what platform?

[arl]

I'm on linux/amd64

I can't tell you right now, sorry.

However I remember I first clicked a button that opened another window/widget. On that second window I just clicked on one of the buttons on the right that are horizontally laid out and it crashed. Reproduced it 3 times.

In case you can't reproduce it with those few details just let me know and I'll write down the steps to reproduce when I'll be able to.

[rcoreilly]

should all be fixed now in v2