#14033: Invalid newtype causes GHC to panic rather than fail to compile -------------------------------------+------------------------------------- Reporter: InThisStyle10s6p | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.2 Resolution: | Keywords: Operating System: Linux | Architecture: x86_64 Type of failure: Compile-time | (amd64) crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by simonpj): Happily it's ok in HEAD {{{ T14033.hs:5:16: error: • The constructor of a newtype must have exactly one field but ‘Zero’ has none • In the definition of data constructor ‘Zero’ In the newtype declaration for ‘Zero’ | 5 | newtype Zero = Zero | ^ }}} I think a dup of #13271. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14033#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler