Illegal distinct seq causes compiler crash

[krux02]

Example

type
  MutualCyclicSeqA = distinct ref seq[MutualCyclicSeqB]
  MutualCyclicSeqB = distinct ref seq[MutualCyclicSeqC]
  MutualCyclicSeqC = distinct ref seq[MutualCyclicSeqA]

var mt: MutualCyclicSeqA

Current Output

SIGSEGV

Expected Output

illegal recursion in type

Additional Information

• I hit this bug during my refactorings in refactoring and yak shaving. #13687

[timotheecour]

title could be improved for searchability

[krux02]

@timotheecour not only that, but the issue still contained some text of the issue template.