Matching methods with no pattern crashes the compiler

[EliasC]

The following short program crashes the compiler

class Foo
  def

encorec: Prelude.head: empty list

It seems like the def is interpreted as an empty list of matching method headers. My guess is changing sepBy to sepBy1 (or similar) in the parser is enough to fix it.

[ghost]

Yeah sepBy1 fixes it. However, writing tests for failing programs is quite tricky atm and will probably be much easier in the future after the test scripts have been refactored. Should I submit a PR without tests, or shall I dig into how the failing tests in the typeSym folder work?

[EliasC]

IMO, it's not worth the extra work to write test scripts if they're being replaced soon anyway.