FC shall not just crash and disappear from screen when encountering an exception.

[ajohn77]

Is there an existing issue for this?

• I have searched the existing issues

Problem description

FC shall not just crash and disappear from screen when encountering an exception.

It shall catch all exceptions internally and try to survive a bit longer while trying:

• to revert the change which forced the crash (if possible)
• to allow the user to backup its work (if possible)
• to create a bug report or error message (mandatory)

It is often not feasible to reproduce the crash repeating the action with running debugger so any information from actual crash shall be saved already at the very moment of the crash.

User would expect as a minimum an error message, silent disappearing from screen is clearly inappropriate behavior.

Next: all modules (Sketcher, TechDraw etc.) shall have their high level exception catching mechanism so the failure of - e.g. missing Constrain in sketcher - doesn't crash the whole FC.

Full version info

[code]
OS: Ubuntu 22.04.4 LTS (KDE/plasma)
Word size of FreeCAD: 64-bit
Version: 0.21.2.33771 (Git)
Build type: Release
Branch: (HEAD detached at 0.21.2)
Hash: b9bfa5c5507506e4515816414cd27f4851d00489
Python 3.10.12, Qt 5.15.3, Coin 4.0.0, Vtk 9.1.0, OCC 7.6.3
Locale: English/United States (en_US)
[/code]

Subproject(s) affected?

None

Anything else?

No response

Code of Conduct

• I agree to follow this project's Code of Conduct

[maxwxyz]

Related:

• UX: Crash and Debug improvements on Windows #13461