> I have this code which compiles and runs normally, but gives > bus errors or > segfaults at run time when compiled with -prof -auto-all. ghc-5.04 > SunOS cownose.cs.indiana.edu 5.8 Generic_108528-18 sun4u > sparc SUNW,Ultra-5_10 If that's really 5.04, and not 5.04.2, you should upgrade and try again. Cheers, Simon