unix_write1 test failure

[Keri Harris]

On linux (ppc, sparc and x86) I get the following failure when running 'make 
boot-check' in share/tests:

$ ./configure && \
make bootstrap && \
cd share/test && \
make boot-oztest && \
make boot-check

<snip>
The following test failed:
unix_write1:
     file: './base/unix.oz':34)
make[2]: *** [zcheck] Error 1

All other tests pass. Is the unix_write1 failure an expected failure or an 
outstanding bug?

Keri