Comment 1:

I think I've run into this before on Linux, but I don't remember exactly what caused it.
I vaguely remember that there was something wrong with the way the test was being run,
and there wasn't actually a race. Might be worth a quick look through the test code.

Comment 2:

It's not a data race, it's a compilation failure. The error reporting could be improved.
From your log:
=== RUN TestNoRaceCgoSync
# command-line-arguments
cgo_test_main.go:7:21: fatal error: pthread.h: No such file or directory
compilation terminated.

Comment 3:

Thank you for the input. I do not have time to look at it now. I just reported it for
what I saw, so we do not forget. It shouldn't fail the way it did, regardless of the
reason.
Alex

Comment 4:

It prints the output of the failed test: it was an improvement over the previous
situation (compilation failures were silently ignored), see
http://code.google.com/p/go/source/detail?r=a298f2d
We would have a separate the relevant failure output.

Comment 5:

Labels changed: added priority-later, racedetector, removed priority-triage, go1.1.

Comment 6:

This issue was closed by revision 6b1b613.

Status changed to Fixed.