Several time related unit tests fail on Mac OS X
===> Failed tests
lib/dns/tests/update_test:future_to_date -> failed: update_test.c:320: serial != 2014040101 [0.058s]
lib/dns/tests/update_test:future_to_unix -> failed: update_test.c:156: serial != old + 1 [0.055s]
lib/dns/tests/update_test:now_to_date -> failed: update_test.c:296: serial != 2014040101 [0.054s]
lib/dns/tests/update_test:now_to_unix -> failed: update_test.c:133: serial != old + 1 [0.053s]
lib/dns/tests/update_test:past_to_date -> failed: update_test.c:273: serial != 2014040100 [0.052s]
lib/dns/tests/update_test:past_to_unix -> failed: update_test.c:110: serial != mystdtime [0.055s]
lib/dns/tests/update_test:undefined_plus1_to_unix -> failed: update_test.c:180: serial != mystdtime [0.056s]
lib/dns/tests/update_test:unixtime_zero -> failed: update_test.c:250: serial != old + 1 [0.054s]Master on latest Mac OS X, compiler:
$ clang --version
Apple LLVM version 9.0.0 (clang-900.0.39.2)
Target: x86_64-apple-darwin17.4.0
Thread model: posix
InstalledDir: /Library/Developer/CommandLineTools/usr/bin