Debug throws Cannot evaluate because of java.lang.NegativeArraySizeException: -2 when evaluating list size

[kasiaMarek]

In repo: https://github.com/asarkar/99-scala
In P01.scala set breakpoint at line 10 (case lst :: Nil => lst), and debug P01Suite.scala "last element of a non-empty list" test. Try to evaluate l.size, see Cannot evaluate because of java.lang.NegativeArraySizeException: -2.

More info in the original issue: scalameta/metals#5997.

dap version: v3.1.5

[adpi2]

Thanks for the report!

[adpi2]

@asarkar Thanks for the report and reproduction. Next time, could you avoid using such emphasis as: "the watch panel is completely broken". It can be perceived as aggressive and it won't help us fix the bug.

[adpi2]

The problem with this build is the compiler is configured with -rewrite -indent and so it tries to rewrite the file during compilation. I can fix it by automatically filtering out those options.