compiling truncate :: Float -> Int with -O2 panics ghc
bash-3.2$ cat Bug.hs
{-# OPTIONS -fglasgow-exts -O2 #-}
module Bug (tst) where
tst :: Float -> Bool
tst x = truncate x > (0::Int)
bash-3.2$ ghc Bug.hs
ghc.exe: panic! (the 'impossible' happened)
(GHC version 6.8.1.20071102 for i386-unknown-mingw32):
narrowTo
Please report this as a GHC bug: http://www.haskell.org/ghc/reportabug
Same results reported on linux.
Trac metadata
Trac field | Value |
---|---|
Version | 6.8.1 |
Type | Bug |
TypeOfFailure | OtherFailure |
Priority | normal |
Resolution | Unresolved |
Component | Compiler |
Test case | |
Differential revisions | |
BlockedBy | |
Related | |
Blocking | |
CC | conal@conal.net |
Operating system | Unknown |
Architecture | Unknown |