#14299: GHCi for GHC 8.2.1 crashed with simple function? -------------------------------+-------------------------------------- Reporter: mathiassm | Owner: (none) Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 8.2.1 Resolution: | Keywords: Operating System: MacOS X | Architecture: x86_64 (amd64) Type of failure: GHCi crash | Test Case: Blocked By: | Blocking: Related Tickets: | Differential Rev(s): Wiki Page: | -------------------------------+-------------------------------------- Comment (by mathiassm): Hello! Yes, I just learned about indentation problems one can run into writing Haskell. My intention was to have those three as a single definition for f, which I now accomplish with a multiline using the let syntax, as you stated. So that part was just my Haskell inexperience (plus the incorrect definition of factorial, my bad!). Now, I supposed the exception could be caused by only defining f n, but as I'm testing that, it doesn't happen; it understandably throws a stack overflow exception. It still hangs on the call to f 0 and throws the MVar error (whatever that is). It doesn't seem to happen elsewhere, if I follow the correct indentation rules (and now I :set +m for convenience)... I'm sorry but I can't find another way to reproduce this, but following those simple statements /: I suppose it's my installation (maybe Homebrew failed compiling it, or downloading the binaries...) Thank you for your time (and sorry!) PD. The "instructions" I followed was the "Please report this bug" message. Replying to [comment:2 bgamari] -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14299#comment:4 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler