Compiled program crashes when generating heap profile

The attached program crashes when trying to obtain a heap 
profile. The program is compiled with the command:
ghc --make -prof -auto-all -i..:.:../Libs GhcProfileCrash.lhs 
-o GhcProfileCrash.exe -dcore-lint > compile.log

The program is run with the following command:
GhcProfileCrash.exe +RTS -hc -RTS

Sometimes the program crashes immediately or after 
reading some files without any message, and sometimes 
with the message (after reading 547 files):
C:\MIJNDO~1\SOFTWA~1\HASKELL\READALOT\GHCPROFI.
EXE: internal error: heapCensus
    Please report this as a bug to glasgow-haskell-
bugs@haskell.org,
    or http://www.sourceforge.net/projects/ghc/

I compile with GHC 6.0.1,
under Windows 98

Trac metadata

Trac field	Value
Version	6.0.1
Type	Bug
TypeOfFailure	OtherFailure
Priority	normal
Resolution	ResolvedNoReason
Component	Profiling
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Compiled program crashes when generating heap profile