sys.sys.qmath_test.qdivq_s64q is unstable: https://ci.freebsd.org/job/FreeBSD-head-amd64-test/12369/testReport/junit/sys.sys/qmath_test/qdivq_s64q/ https://ci.freebsd.org/job/FreeBSD-head-amd64-test/12387/testReport/junit/sys.sys/qmath_test/qdivq_s64q/ https://ci.freebsd.org/job/FreeBSD-head-amd64-test/12392/testReport/junit/sys.sys/qmath_test/qdivq_s64q/ *** Check failed: /usr/src/tests/sys/sys/qmath_test.c:308: QDIVQ(-10002376169421.736328 / -15034320172614.007812): | 98.402039 - 0.665303| = 97.736736 (max err 64.000000) Also on i386: https://ci.freebsd.org/job/FreeBSD-head-i386-test/6533/testReport/sys.sys/qmath_test/qdivq_s64q/ https://ci.freebsd.org/job/FreeBSD-head-i386-test/6519/testReport/sys.sys/qmath_test/qdivq_s64q/ https://ci.freebsd.org/job/FreeBSD-head-i386-test/6515/testReport/sys.sys/qmath_test/qdivq_s64q/ *** Check failed: /usr/src/tests/sys/sys/qmath_test.c:308: QDIVQ(-62708492.456048 / -164807648.004718): | 96.661085 - 0.380495| = 96.280590 (max err 64.000000)
trasz: can you help check this?
A commit references this bug: Author: lwhsu Date: Tue Sep 3 10:49:13 UTC 2019 New revision: 351739 URL: https://svnweb.freebsd.org/changeset/base/351739 Log: Temporarily skip sys.sys.qmath_test.qdivq_s64q in CI because it is unstable PR: 240219 Discussed with: trasz Sponsored by: The FreeBSD Foundation Changes: head/tests/sys/sys/qmath_test.c
I've seen this running kyua for dev testing too. It repros very regularly with: % kyua debug -k /usr/tests/sys/sys/Kyuafile qmath_test:qdivq_s64q *** Check failed: /usr/src/freebsd/tests/sys/sys/qmath_test.c:312: QDIVQ(-3223.957586 / -4.348088): | -0.000000 - 741.465557| = 741.465557 (max err 64.000000) *** Check failed: /usr/src/freebsd/tests/sys/sys/qmath_test.c:312: QDIVQ( -0.666057 / -0.006838): | -0.000000 - 97.403647| = 97.403647 (max err 64.000000) *** Check failed: /usr/src/freebsd/tests/sys/sys/qmath_test.c:312: QDIVQ(-12136258505124932.000000 / -37248647815101.328125): | 6.546875 - 325.817425| = 319.270550 (max err 64.000000) *** Check failed: /usr/src/freebsd/tests/sys/sys/qmath_test.c:312: QDIVQ(-119840516.277450 / -1321356.097985): | 2.831561 - 90.695095| = 87.863533 (max err 64.000000) It seems in all repros so far both the numerator and denominator are negative.