Simplifier and optimization flags
compiling
>module Parse where
>
>import Parsec
>
>whiteSpace = skipMany1 (oneOf " ")
>
or
>module Parse where
>
>import Parsec
>
>ttoken :: Parser TToken
>ttoken = do { ; return TIf }
>
>data TToken = TIf
via
ghc -O2 -funbox-strict-fields
-funfolding-use-threshold30 -package text -c Parse.hs
-o Parse.o
results both times in
ghc-5.00.1: panic! (the `impossible' happened, GHC
version 5.00.1):
simplCore/Simplify.lhs:1468: Non-exhaustive patterns
in function cat_evals
removing any option compiles.
(the latter also complains about some bad eta expands)
i'm using the linux version distributed from the ghc
homepage.Trac metadata
| Trac field | Value |
|---|---|
| Version | 5.0 |
| Type | Bug |
| TypeOfFailure | OtherFailure |
| Priority | normal |
| Resolution | ResolvedWon'tFix |
| Component | Compiler |
| Test case | |
| Differential revisions | |
| BlockedBy | |
| Related | |
| Blocking | |
| CC | |
| Operating system | |
| Architecture |