HEAD: the `impossible' happened, MacOS X

[Sean Seefried]

On Thu, 20 Mar 2003, Simon Marlow wrote:

>
> > This is yesterdays HEAD:
> >
> > ../../ghc/compiler/ghc-inplace -H32m -O0 -W
> > -fno-warn-unused-matches -fwarn-unused-imports -L/sw/lib
> > -fglasgow-exts -cpp -Iinclude -#include HsBase.h
> > -funbox-strict-fields -package-name base -dcore-lint -W
> > -fno-warn-unused-matches -fwarn-unused-imports -keep-hc-files
> >      -c System/Random.hs -o System/Random.o  -ohi System/Random.hi
> >
> > System/Random.hs:15:
> >     Warning: Module `GHC.IOBase' is imported, but nothing
> > from it is used
> > 	     (except perhaps instances visible in `GHC.IOBase')
> > ghc-5.05: panic! (the `impossible' happened, GHC version 5.05):
> > 	ASSERT failed! file stgSyn/CoreToStg.lhs line 188
> > randomIvalDouble1 {- v s2Im -}
>
> Compiling the libraries without -O is not usually a good idea, but
> nevertheless the compiler shouldn't crash.  I'll take a look.

I had this happen to me as well on Debian Linux 2.4.20. Perhaps this
isn't architecture dependant.

Sean