- `CompilationException` should not strongly reference `IrFile`s and
other IR elements, which in turn reference FIR elements strongly. It
can lead to a memory leak in the IDE as the exception is held
statically in the IDE's `MessagePool`.
- I considered fixing this on the level of `KtCodeCompilationException`
from the Analysis API, but:
1. `KtCodeCompilationException` can wrap many kinds of exceptions.
Snapshotting the cause only for `CompilationException` (somewhere
down the cause chain) would be messy, as it'd require traversing
the cause chain and referencing `CompilationException` directly,
breaking API boundaries.
2. Keeping the same level of report quality while snapshotting a cause
is not trivial.
3. Exceptions in general should be as lean as possible, so it makes
sense to fix `CompilationException` itself.
^KT-65655 fixed
Marco Pennekamp
d121b529b5