Crash when undoing a TabControl replace

[raphschru]

Hi fellow VI scripters,

I noticed LV crashes if you try to undo (ctrl+z) after replacing a TabControl.

Steps to reproduce:

1. New VI;

2. Drop a TabControl on the FP;

3. Right-click > Replace > TabControl of any style;

4. Undo (ctrl+z);

5. Click successively on the TabControl's tabs to navigate between the pages until LV crashes.

LV error report:

C:\dev\pg\labview\branches\2021sp1\dev\source\panel\fpsane.cpp(1159) : DWarn 0x613A5C04: Fatal insanity (0x00000020) detected in'Untitled 1: Main Application Instance'

Regards,

Raphaël.

[GerdW]

Hi,

I can confirm this behaviour with LV2019:

I just followed the 5 steps as described…

[Andrey_Dmitriev]

Recent LV2025x64 is affected too:

[raphschru]

Apparently the bug is known from NI already (I don't know the bug number though). Quote from NI support:

"the reported bug is indeed already in our database, however it may not have been fixed yet. Customers can also experience crashes with certain keyboard combinations while working on certain tasks. [...] I see that since there was several other LabVIEW versions where this problem occurs [...]"

If anyone is interested, the crash can also be reproduced via VI Scripting:

Warning!! This VI will make LV crash when executed!!

Regards,

Raphaël.

[raphschru]

For your information, this bug has the CAR #3030762.