testbench_simple.wxmx fails at `Exit` time with error code 113

[jgmbenoit]

Within an uptodate Debian/Sid environment, version 26.06.2 of wxmaxima built with fix c259093 (issue #2104) fails test testbench_simple.wxmx at Exit time.
If, as regular user, I launch

wxmaxima testbench_simple.wxmx ; echo $?;

then Cell->Evaluate All Cells then at the end File->Exit,
I get

WARNING: Glycin running without sandbox.
WARNING: Glycin running without sandbox.
WARNING: Glycin running without sandbox.
./src/cells/CellPtr.cpp(104): assert "backPtr == this" failed in Deref().
WARNING: Glycin running without sandbox.
Trace/breakpoint trap      wxmaxima testbench_simple.wxmx
133

I guess that the WARNING_s are irrelevant here, but the failure of the assert is not.
During the testing phase of the building of the software, this issue fails the make test check.

[gunterkoenigsmann]

This one has caught me in a one-bug-reveals-the-other situation. Once I have sorted them all out I'll plan a new release.

[gunterkoenigsmann]

The next release will have many additional regression tests on Ubuntu and MS windows. Additionally many classes have been split into smaller and easier-testable parts. Hope that will drastically improve the quality of future releases.