[10.50b] A Crash popup when Ctrl-Q while using CudaLister

[thomasmolover]

sometime when I use Ctrl-Q to preview some file, TC popup a warninig windows and crash.

It happen seem to be random and I can't catch it a same serial operations

this is the error windows

https://imgur.com/a/HAU3akQ

Windows 11
TC 10.5b6 x64
cudalist wlx

[thomasmolover]

maybe it is NOT TC bug, how to catch its info???

[Horst.Epp]

Preview what type of file ?
Is CudaLister actual (current is 1.7.6.1)

[thomasmolover]

cudalist is 1.7.6.1

Follow the download URi

http://totalcmd.net/plugring/CudaLister.html

[Horst.Epp]

cudalist is 1.7.6.1

I know the actual version as you can see in my post.
The 1st question is still open ?

[thomasmolover]

It happened on random files if its a text-type could be view by cudalist, I could not consider what plugins cause it, I'd put the cudalist first top of all the plugins and wait for the crash.

[ghisler(Author)]

TC doesn't have a function CheckSynchronize, so it must be a plugin.
Try opening a text file with F3 and then cycle through all plugins which can show text files with option '4' in the options menu (some editors will use the '4' as text input, so you need to use the menu). One of these plugins must be causing the error.

[AntonyD]

TC doesn't have a function CheckSynchronize, so it must be a plugin.
Try opening a text file with F3 and then cycle through all plugins which can show text files with option '4' in the options menu (some editors will use the '4' as text input, so you need to use the menu). One of these plugins must be causing the error.

https://forum.lazarus.freepascal.org/index.php?topic=25053.0
https://www.freepascal.org/docs-html/rtl/classes/checksynchronize.html

this is means that this func is a part of Core Lazarus/Pascal engine.

[ghisler(Author)]

Currently only the built-in media player uses threads in Lister. Maybe a plugin written in Lazarus?

[Elwin_Ransom]

Mr. Ghisler, the author of the plugin replied in relation to this problem:

I found CheckSynchronize call in win32 widgets, in the handler of WM_NULL msg. maybe this msg is used by TotalCmd? my plugin don't.

[ghisler(Author)]

I found this in the Lazarus sources:

Code: Select all

    WM_NULL:
      if (Window = Win32WidgetSet.AppHandle) then
      begin
        CheckSynchronize;
        TWin32Widgetset(Widgetset).CheckPipeEvents;
      end;

Lazarus seems to post WM_NULL to itself to wake up the UI thread. But why would this be caused by CudaLister? Does CudaLister use Lazarus? If yes, does it call any LCL functions from a background thread?

[Elwin_Ransom]

Response from plugin author:

does it call any LCL functions from a background thread?

It must not do it, IDK it yet.

[ghisler(Author)]

There seems to be just one function sending WM_NULL, located in win32object.inc:
procedure TWin32WidgetSet.HandleWakeMainThread(Sender: TObject);
If you can debug your plugin, put a breakpoint on it.

[Horst.Epp]

Since the original report we had several new version.
I never had any such a crash.
Would be fine to know about the status of the post starter.

[Elwin_Ransom]

@Horst.Epp

Since the original report we had several new version

Do you mean the new versions of the plugin? I have the latest version of CudaLister installed: 1.8.1.0 (Win 10, TC 10.52). Crashes happen regularly and steadily, 5-6 times a day. Details here.