#3033: numerical error introduced by -O1
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Reporter: roland | Owner:
Type: bug | Status: new
Priority: normal | Component: Compiler
Version: 6.10.1 | Severity: normal
Keywords: | Testcase:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
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{{{
f x = x * 1000000.1
g y True = y
g y False = g y True
z = let x = 100000000000.0 in
f x - g (f x) True
main = putStrLn (show z)
}}}
This program prints "-2.328125" when compiled with "-O1".
Running {{{main}}} from within ghci gives "0.0", as it should.
Occurs under Mac OS and Linux (both x86).
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/3033>
GHC <http://www.haskell.org/ghc/>
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