#13838: -Wdeferred-type-errors on a program with main not of type IO () yields "main thread exited (uncaught exception)" -------------------------------------+------------------------------------- Reporter: harry | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: Compiler | Version: 8.0.1 Resolution: | Keywords: Operating System: Unknown/Multiple | Architecture: Type of failure: Compile-time | Unknown/Multiple crash or panic | Test Case: Blocked By: | Blocking: Related Tickets: #13292 | Differential Rev(s): Wiki Page: | -------------------------------------+------------------------------------- Comment (by RyanGlScott): Correct, that is entirely expected. To be clear: the GHC panic/Core Lint error bug exists in GHC 8.0.2, but not 8.2. However, a bug persists in GHC 8.2 where actually running the code yields `main thread exited (uncaught exception)`, which shouldn't happen. I'll update the title accordingly. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/13838#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler