winmm.dll error 487 is easily reproducible

[EXCOFFIER Denis <denis dot excoffier at c-s dot fr>]

Hello,

I get the winmm.dll error 487 (under 1.7.8-1, but not under 1.7.7-1) with
the following, easily 100% reproducible:

echo "dummy text" > /tmp/foo
/usr/bin/xz -8 /tmp/foo
/usr/bin/xz -d < /tmp/foo.xz         <--- this produces the error
rm -f /tmp/foo /tmp/foo.xz

xz is the current one in Cygwin (4.999.9beta), but the same applies for the
last xz (5.01). The `-8' is crucial here.

The problem is related to another problem i have described on this list
(http://sourceware.org/ml/cygwin/2010-12/msg00368.html, unexpected jumps to
the future in the system date), where the problem was caused by timeGetTime()
returning 0 sometimes.

Denis Excoffier.



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