>From: "Gregory Morrisett" <jgm@cs.cornell.edu>

>The same thing shows up in SML/NJ with CML.  The problem is that
>in the presence of threads, you really shouldn't be able to=20
>dereference a mutable value in your patterns.

I'd agree that core dump is surprising, but if your multi-threaded
program does anything with a mutable value without the protection of a
mutex, then it is incorrect (i.e. its semantics is unspecified).  In
O'Caml, none of the operations is specified as atomic (except a few
things in the threads library), and you shouldn't assume that they are.

-- Damien
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