Compiling a program with ghc built from CVS shortly after the 6.0 release
produced this error message:
ghc -fglasgow-exts -O2 -cpp -DBUILD_DATE="\\\"`date`\\\"" -package-conf
../../mk/package.conf -package flux_utils -package flux_clang -package
haskell98 -c FlattenCore.hs -o FlattenCore.o -hisuf hi
ghc-6.1: panic! (the `impossible' happened, GHC version 6.1):
simplCore/Simplify.lhs:1442: Non-exhaustive patterns in function
cat_evals
Please report it as a compiler bug to [EMAIL PROTECTED],
or http://sourceforge.net/projects/ghc/.
I was able to work around the problem by compiling without optimization.
--
Alastair Reid
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