SI-9223 By-name constructor params should not be aliased

Usually, the compiler tries avoids creating a field in a subclass
for a constructor parameter that is known to be stored in a field
in one of its superclasses.

However, in the enclosed test `run/t9223.scala`, this mechanism
confuses `=> A` with `A`, which results in a runtime
`ClassCastException`.

This commit avoids using param aliases for by-name parameters.

I have also added a test for something close the opposite case, where
the subclass has a strict parameter and the superclass has a by-name
parameter. This was working correctly before this patch.

0 files changed, 0 insertions, 0 deletions