[Haskell-cafe] Maybe a compiler bug?

Murray Gross mgross21 at verizon.net
Mon Jan 5 18:34:33 EST 2009

When using any of -O, -O1, -O2 with the Debian binary build of GHC 6.6, 
trace shows that the expression

        if (lr > ll)  then  False else True

is (at least partially) evaluated, but the value returned is always True, 
even though trace reports that (lr > ll) is True. When I use only the 
native code generator (without optimization), the correct value (False) is 

Further detail and complete code on request.


Murray Gross

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