Panic in ghci name suggestion
From a plain invocation of ghci:
$ ghci
GHCi, version 7.2.1: http://www.haskell.org/ghc/ :? for help
Loading package ghc-prim ... linking ... done.
Loading package integer-gmp ... linking ... done.
Loading package base ... linking ... done.
Loading package ffi-1.0 ... linking ... done.
Prelude> 2
2
Prelude> fit
<interactive>:0:1:ghc: panic! (the 'impossible' happened)
(GHC version 7.2.1 for x86_64-apple-darwin):
unknownNameSuggestErr UnhelpfulSpan
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
Prelude>Presumably, ghci wants to suggest the it variable but is getting confused because that variable wasn't defined in a source file.
Note that this doesn't actually crash ghci; the prompt resumes as normal after the error message is printed out.
Trac metadata
| Trac field | Value |
|---|---|
| Version | 7.2.1 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | Unresolved |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |