#10477: Tab-completing in a directory with Unicode heiroglyph crashes ghci -------------------------------------------+------------------------------- Reporter: acfoltzer | Owner: Type: bug | Status: new Priority: normal | Milestone: Component: GHCi | Version: 7.10.1 Keywords: | Operating System: Windows Architecture: Unknown/Multiple | Type of failure: GHCi crash Test Case: | Blocked By: Blocking: | Related Tickets: Differential Revisions: | -------------------------------------------+------------------------------- With a file called 𓅖.hs in `C:\Users\acfoltzer`, the following in `cmd.exe`: {{{ C:\Users\acfoltzer>chcp 65001 Active code page: 65001 C:\Users\acfoltzer>ghci GHCi, version 7.10.1: http://www.haskell.org/ghc/ :? for help Prelude> :l C:\cygwin\home\acfoltzer\<TAB> ghc.exe: panic! (the 'impossible' happened) (GHC version 7.10.1 for i386-unknown-mingw32): Enum.toEnum{Word16}: tag (78166) is outside of bounds (0,65535) Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug }}} Here, I'm setting the code page first according to the various bits of folk wisdom on the Internet about getting Unicode to properly display in `cmd.exe`. I don't get this crash with a Cygwin terminal, but rather see `??.hs`. I came across this because I was getting the same exception in the Cryptol REPL, so I suspect it's not unique to GHCi, but is rather something fishy in base. -- Ticket URL: http://ghc.haskell.org/trac/ghc/ticket/10477 GHC http://www.haskell.org/ghc/ The Glasgow Haskell Compiler