PR# 12988 Watch expression << Current >> when in generic class gives internal exception then crash

A watch expression << Current >> when execution is paused in a routine
of a generic class fails to evaluate with an internal exception, then
crashes when step again.

Compile with attached class and .ecf file.
Click on Step by Step twice, then Step into Routine once.
Add watch expression << Current >>.
Evaluation fails with an internal exception.
Click on Step by Step.
Estudio crashes with no trace.

Note that watch expression `[Current]' when stopped in a generic class
also yields an error:

   Instance creation of class {TUPLE [ARRAYED_LIST [G#1]]} raised an error.

However, in this case stepping again just gives the same error, instead of
a crash.

This issue is now fixed by revision rev#68909.
The crash won't happened again, however the evaluator won't be always able to create the array, since at compilation time, we don't always know the exact type of "like Current", this is known at the execution time.
We'll try to improve the debugger on this point after 6.0.
Thus, I change the status to suspended if you don't mind.

Attachments for problem report #12988