[browser] HalfTests.ExplicitConversion_FromSingle failing due to NaN != NaN

[stephentoub]

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=768837&view=results
Build error leg or test failing: System.Tests.HalfTests.ExplicitConversion_FromSingle
Pull request:

Error Message

Fill the error message using step by step known issues guidance.

{
  "ErrorMessage": "",
  "ErrorPattern": "FAIL.*System.Tests.HalfTests.ExplicitConversion_FromSingle",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

Known issue validation

Build: 🔎 https://dev.azure.com/dnceng-public/public/_build/results?buildId=768837
Error message validated: [FAIL.*System.Tests.HalfTests.ExplicitConversion_FromSingle]
Result validation: ✅ Known issue matched with the provided build.
Validation performed at: 8/8/2024 7:39:18 PM UTC

[14:40:21] info: [FAIL] System.Tests.HalfTests.ExplicitConversion_FromSingle(f: NaN, expected: NaN)
[14:40:21] info: Assert.Equal() Failure: Values differ
[14:40:21] info: Expected:   NaN
[14:40:21] info: Actual:     NaN
[14:40:21] info:    at System.AssertExtensions.Equal(Half expected, Half actual)
[14:40:21] info:    at System.Tests.HalfTests.ExplicitConversion_FromSingle(Single f, Half expected)
[14:40:21] info:    at System.Object.InvokeStub_HalfTests.ExplicitConversion_FromSingle(Object , Span`1 )
[14:40:21] info:    at System.Reflection.MethodBaseInvoker.InvokeWithFewArgs(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[14:40:21] info: [FAIL] System.Tests.HalfTests.ExplicitConversion_FromSingle(f: NaN, expected: NaN)
[14:40:21] info: Assert.Equal() Failure: Values differ
[14:40:21] info: Expected:   NaN
[14:40:21] info: Actual:     NaN
[14:40:21] info:    at System.AssertExtensions.Equal(Half expected, Half actual)
[14:40:21] info:    at System.Tests.HalfTests.ExplicitConversion_FromSingle(Single f, Half expected)
[14:40:21] info:    at System.Object.InvokeStub_HalfTests.ExplicitConversion_FromSingle(Object , Span`1 )
[14:40:21] info:    at System.Reflection.MethodBaseInvoker.InvokeWithFewArgs(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

Report

Build	Definition	Test	Pull Request
1116802	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#118482
1116135	dotnet/runtime	WasmTestOnV8-ST-System.Runtime.Tests.WorkItemExecution	#118416
1115844	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#118458
1115210	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#118329
1114139	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#118369
1113214	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#115966
1112094	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution
1111933	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution
1110903	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#118207
1110544	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#118232
1107507	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#118099
1105486	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#117635
1105314	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#117914
1097037	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#117729
1096425	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#117716
1095850	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#116798
1094007	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#117613
1093819	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#117611
1092246	dotnet/runtime	WasmTestOnChrome-ST-System.Runtime.Tests.WorkItemExecution	#117540

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	6	19

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/area-infrastructure-libraries
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Tagging subscribers to this area: @dotnet/area-system-numerics
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[ericstj]

This issue is matching to tests jobs which log test names. Need to further constrain the match.

[mdh1418]

Just hit this in #106040 for WasmTestOnChrome-ST-System.Runtime.Tests
config: net9.0-browser-Release-wasm-Mono_Release-WasmTestOnChrome

[18:27:21] info: [STRT] System.Tests.HalfTests.ExplicitConversion_FromSingle(f: NaN, expected: NaN)
[18:27:21] info: [FAIL] System.Tests.HalfTests.ExplicitConversion_FromSingle(f: NaN, expected: NaN)
[18:27:21] info: Assert.Equal() Failure: Values differ
[18:27:21] info: Expected:   NaN
[18:27:21] info: Actual:     NaN
[18:27:21] info:    at System.AssertExtensions.Equal(Half expected, Half actual)
[18:27:21] info:    at System.Tests.HalfTests.ExplicitConversion_FromSingle(Single f, Half expected)
[18:27:21] info:    at System.Object.InvokeStub_HalfTests.ExplicitConversion_FromSingle(Object , Span`1 )
[18:27:21] info:    at System.Reflection.MethodBaseInvoker.InvokeWithFewArgs(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)
[18:27:21] info: [STRT] System.Tests.HalfTests.ExplicitConversion_FromSingle(f: NaN, expected: NaN)
[18:27:21] info: [FAIL] System.Tests.HalfTests.ExplicitConversion_FromSingle(f: NaN, expected: NaN)
[18:27:21] info: Assert.Equal() Failure: Values differ
[18:27:21] info: Expected:   NaN
[18:27:21] info: Actual:     NaN
[18:27:21] info:    at System.AssertExtensions.Equal(Half expected, Half actual)
[18:27:21] info:    at System.Tests.HalfTests.ExplicitConversion_FromSingle(Single f, Half expected)
[18:27:21] info:    at System.Object.InvokeStub_HalfTests.ExplicitConversion_FromSingle(Object , Span`1 )
[18:27:21] info:    at System.Reflection.MethodBaseInvoker.InvokeWithFewArgs(Object obj, BindingFlags invokeAttr, Binder binder, Object[] parameters, CultureInfo culture)

Not sure why it didn't match in build analysis