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Repro: * Run "make run-watchos-dev-mini CONFIG=Release" in xamarin-macios/tests Result: > test_0_float_return_spill failed: got 1, expected 0 > ... > [FAIL] JitTests.Objects : Expected: 0 Full log: https://gist.github.com/rolfbjarne/bb7cff9eaf77e1e1acba2caa8f05e741 Built log: https://gist.github.com/rolfbjarne/3b3e71a3a5c6f274d191c59d45015422 It only happens in release builds, and only on watchOS. An alternative repro would be to open the solution "tests/mini/mini-watchos.sln" and run the Release|Device configuration of the "mini-watchos-app" project.
I've tested master, d15-5, d15-4 and d15-3, and it fails everywhere, so if it's a regression, it's not a recent one.
PR to ignore this test to make the test run green: mono/master: https://github.com/mono/mono/pull/6073 mono/2017-10: https://github.com/mono/mono/pull/6074 This will not fix this bug, only make the tests green until the bug is fixed.
The latest mono bump (https://github.com/xamarin/xamarin-macios/pull/3030) brought the commit that ignores this test, so this failure should not occur anymore. This also means that to reproduce the issue, the test first has to be unignored.