[Hugs-bugs] Bug evaluating boolean expresion
Pepe Gallardo
pepeg at lcc.uma.es
Thu Jan 13 07:02:13 EST 2005
After loading the following script,
b = b' && True
b' = (if True then f else odd) 1
f _ = True
I get the following session:
|| || || || || || ||__ Hugs 98: Based on the Haskell 98 standard
||___|| ||__|| ||__|| __|| Copyright (c) 1994-2003
||---|| ___|| World Wide Web: http://haskell.org/hugs
|| || Report bugs to: hugs-bugs at haskell.org
|| || Version: November 2003 _______________________________________________
Haskell 98 mode: Restart with command line option -98 to enable extensions
Reading file "c:\program files\hugs98\libraries\Hugs\Prelude.hs":
Reading file "c:\program files\hugs98\libraries\Prelude.hs":
Reading file "C:\Documents and Settings\pepe gallardo\Desktop\pepe.hs":
Hugs session for:
c:\program files\hugs98\libraries\Hugs\Prelude.hs
c:\program files\hugs98\libraries\Prelude.hs
C:\Documents and Settings\pepe gallardo\Desktop\pepe.hs
Type :? for help
Main> b
False :: Bool
Main> b'
Program error: pattern match failure: instShow_v89_v1324 0 b'
Regards,
Pepe Gallardo
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