> I ran configure on a sparc-sun-solaris2.8 system (sparcv9), and
> dblalign did not detect that ARCH_ALIGN_DOUBLE is needed for this
> architecture.  (ocamlrun gets a bus error in copy_double unless
> compiled with ARCH_ALIGN_DOUBLE).  Defining ARCH_ALIGN_DOUBLE in
> config/m.h eliminates the bus error.

You should have reported this to caml-bugs@inria.fr.  At any rate,
the problem is fixed in the working sources; see bugID #470 on
http://caml.inria.fr/bin/caml-bugs.  For your information, this is due
to some versions of gcc imposing different alignment constraints
whether -O is set or not...

- Xavier Leroy
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