Unixware 714 pthreads

Hi every one,

I need help to debug the problem I have on Unixware 714 and beta3.
postgresql make check hangs on plpgsql test when compiled with
--enable-thread-safty.

It does hang on select block_me();

This select should be canceled by the set statement_timeout=1000, instead,
the backend is 100% CPU bound and only kill -9 can kill it.

It works ok when compiled without -enable-thread-safty.

I've tried almost every thing I could think of, but not knowing so much
about threads and PG source code, I request that someone can help me as to
find a way to debug this. It worked up until beta2, but I'm not sure
block_me()was there.

I really need someone to tell me where to begin.

TIA

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