#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: | -------------------------------+-------------------------------------- Description changed by mathiassm: Old description:
I'm a newbie here, but I'm following your instructions!
I started GHCi, defined a simple factorial function and then called it and... it crashed.
{{{#!hs let f 0 = 0 f n = n * f (n-1) f 0 }}}
That is what I introduced in the console... After that computer hanged and gave me the following error:
{{{ ghc: panic! (the 'impossible' happened) (GHC version 8.2.1 for x86_64-apple-darwin): thread blocked indefinitely in an MVar operation
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}}
New description: I'm a newbie here, but I'm following your instructions! I started GHCi, defined a simple factorial function and then called it and... it crashed. {{{#!hs let f 0 = 0 f n = n * f (n-1) f 0 }}} That is what I introduced in the console... After that computer hanged and gave me the following error: {{{ ghc: panic! (the 'impossible' happened) (GHC version 8.2.1 for x86_64-apple-darwin): thread blocked indefinitely in an MVar operation Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} EDIT: This was done on a macOS 10.12.6 system with the Haskell Platform installed via Homebrew, with no further "customization". -- -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/14299#comment:1 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler