Bug 59953 - [llvm][bitcode] test_0_float_return_spill failed: got 1, expected 0
Summary: [llvm][bitcode] test_0_float_return_spill failed: got 1, expected 0
Status: CONFIRMED
Alias: None
Product: iOS
Classification: Xamarin
Component: Mono runtime / AOT compiler ()
Version: master
Hardware: PC Mac OS
: --- normal
Target Milestone: Future Cycle (TBD)
Assignee: Zoltan Varga
URL:
Depends on:
Blocks:
 
Reported: 2017-10-04 11:52 UTC by Rolf Bjarne Kvinge [MSFT]
Modified: 2017-11-23 16:42 UTC (History)
4 users (show)

Tags:
Is this bug a regression?: No
Last known good build:

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Related Links:
Status:
CONFIRMED
Description Rolf Bjarne Kvinge [MSFT] 2017-10-04 11:52:36 UTC 
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.
Comment 1 Rolf Bjarne Kvinge [MSFT] 2017-10-04 11:53:20 UTC 
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.
Comment 2 Rolf Bjarne Kvinge [MSFT] 2017-11-22 12:01:13 UTC 
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.
Comment 3 Rolf Bjarne Kvinge [MSFT] 2017-11-23 16:42:59 UTC 
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.