Press Ctrl+C in About dialog

[JoKi]

Hi,

In order to copy the Fiddler version details from the About dialog, I got the following stack trace output in the console:

Stacktrace:

  at <unknown> <0xffffffff>
  at (wrapper managed-to-native) System.Windows.Forms.X11Keyboard.Xutf8LookupString (intptr,System.Windows.Forms.XEvent&,byte[],int,intptr&,System.Windows.Forms.XLookupStatus&) <0x000a4>
  at System.Windows.Forms.X11Keyboard.LookupString (System.Windows.Forms.XEvent&,int,System.Windows.Forms.XKeySym&,System.Windows.Forms.XLookupStatus&) <0x000c3>
  at System.Windows.Forms.X11Keyboard.EventToVkey (System.Windows.Forms.XEvent) <0x0003f>
  at System.Windows.Forms.X11Keyboard.ToUnicode (int,int,string&) <0x0035f>
  at System.Windows.Forms.X11Keyboard.TranslateMessage (System.Windows.Forms.MSG&) <0x00127>
  at System.Windows.Forms.XplatUIX11.TranslateMessage (System.Windows.Forms.MSG&) <0x00023>
  at System.Windows.Forms.XplatUI.TranslateMessage (System.Windows.Forms.MSG&) <0x0001f>
  at System.Windows.Forms.Application.RunLoop (bool,System.Windows.Forms.ApplicationContext) <0x00ce7>
  at System.Windows.Forms.Form.ShowDialog (System.Windows.Forms.IWin32Window) <0x00897>
  at (wrapper remoting-invoke-with-check) System.Windows.Forms.Form.ShowDialog (System.Windows.Forms.IWin32Window) <0x00067>
  at Fiddler.frmAbout.DoAboutBox () <0x001b7>
  at Fiddler.frmViewer.miHelpAbout_Click (object,System.EventArgs) <0x0002b>
  at System.Windows.Forms.MenuItem.OnClick (System.EventArgs) <0x00065>
  at System.Windows.Forms.MenuItem.PerformClick () <0x0001e>
  at (wrapper remoting-invoke-with-check) System.Windows.Forms.MenuItem.PerformClick () <0x00053>
  at System.Windows.Forms.MenuTracker.OnMouseUp (System.Windows.Forms.MouseEventArgs) <0x002af>
  at System.Windows.Forms.Control.ProcessActiveTracker (System.Windows.Forms.Message&) <0x0016f>
  at System.Windows.Forms.Control.WmLButtonUp (System.Windows.Forms.Message&) <0x0004b>
  at System.Windows.Forms.Control.WndProc (System.Windows.Forms.Message&) <0x00217>
  at System.Windows.Forms.ScrollableControl.WndProc (System.Windows.Forms.Message&) <0x00013>
  at System.Windows.Forms.ContainerControl.WndProc (System.Windows.Forms.Message&) <0x0005b>
  at System.Windows.Forms.Form.WndProc (System.Windows.Forms.Message&) <0x00257>
  at System.Windows.Forms.Control/ControlWindowTarget.OnMessage (System.Windows.Forms.Message&) <0x00024>
  at System.Windows.Forms.Control/ControlNativeWindow.WndProc (System.Windows.Forms.Message&) <0x00036>
  at System.Windows.Forms.NativeWindow.WndProc (intptr,System.Windows.Forms.Msg,intptr,intptr) <0x00374>
  at System.Windows.Forms.XplatUIX11.DispatchMessage (System.Windows.Forms.MSG&) <0x0001f>
  at System.Windows.Forms.XplatUI.DispatchMessage (System.Windows.Forms.MSG&) <0x0001f>
  at System.Windows.Forms.Application.RunLoop (bool,System.Windows.Forms.ApplicationContext) <0x00cf3>
  at System.Windows.Forms.Application.Run (System.Windows.Forms.ApplicationContext) <0x00057>
  at System.Windows.Forms.Application.Run (System.Windows.Forms.Form) <0x00033>
  at Fiddler.frmViewer.RunMain (string[]) <0x005bb>
  at Fiddler.frmViewer.Main (string[]) <0x00083>
  at (wrapper runtime-invoke) <Module>.runtime_invoke_void_object (object,intptr,intptr,intptr) <0x000c8>

Native stacktrace:

    mono() [0x4accca]
    mono() [0x5040fe]
    mono() [0x4275d7]
    /lib/x86_64-linux-gnu/libpthread.so.0(+0x11390) [0x7fface105390]
    /lib/x86_64-linux-gnu/libc.so.6(strlen+0x26) [0x7ffacdb9fb96]
    /usr/lib/x86_64-linux-gnu/libX11.so.6(_XimLocalUtf8LookupString+0xe7) [0x7ffac9ff2917]
    [0x410ba695]

Debug info from gdb:

Could not attach to process.  If your uid matches the uid of the target
process, check the setting of /proc/sys/kernel/yama/ptrace_scope, or try
again as the root user.  For more details, see /etc/sysctl.d/10-ptrace.conf
ptrace: Operation not permitted.
No threads.

 

Eventually, this might be a Mono related problem. I'm running on Ubuntu 16.04 with latest Xamarin Mono packages:

$ mono -V
Mono JIT compiler version 4.6.2 (Stable 4.6.2.16/ac9e222 Tue Jan  3 11:48:26 UTC 2017)
Copyright (C) 2002-2014 Novell, Inc, Xamarin Inc and Contributors. www.mono-project.com
    TLS:           __thread
    SIGSEGV:       altstack
    Notifications: epoll
    Architecture:  amd64
    Disabled:      none
    Misc:          softdebug
    LLVM:          supported, not enabled.
    GC:            sgen

 

Kind regards, JoKi