Test failure: System.Collections.Generic.Tests.EqualityComparerTests/NullableEquals(left: 0, right: 128, expected: False)

[ghost]

Opened on behalf of @Sunny-pu

The test System.Collections.Generic.Tests.EqualityComparerTests/NullableEquals(left: 0, right: 128, expected: False) has failed.

System.NullReferenceException : Object reference not set to an instance of an object.

    Stack Trace:

       at System.Nullable$1<System.__UniversalCanon>.get_HasValue() in f:\dd\ndp\fxcore\CoreRT\src\System.Private.CoreLib\shared\System\Nullable.cs:line 34
   at System.Collections.Generic.NullableEqualityComparer$1<System.__UniversalCanon>.Equals(Nullable$1<__UniversalCanon> x, Nullable$1<__UniversalCanon> y) in f:\dd\ndp\fxcore\CoreRT\src\System.Private.CoreLib\src\Internal\IntrinsicSupport\EqualityComparerHelpers.cs:line 253
   at Internal.Runtime.Augments.RuntimeAugments.CallDescrWorker(IntPtr callDescr) in f:\dd\ndp\fxcore\CoreRT\src\System.Private.CoreLib\src\Internal\Runtime\Augments\RuntimeAugments.cs:line 969
   at Internal.Runtime.TypeLoader.CallConverterThunk.InvokeTarget(Void* allocatedStackBuffer, $CallConversionParameters conversionParams) in InvokeTarget:line 16707566
   at Internal.Runtime.Augments.RuntimeAugments.RunFunctionWithConservativelyReportedBufferInternal<Internal.Runtime.CallInterceptor.CallConversionInterpreter+CallConversionInterpreterLocals>(Int32 cbBuffer, IntPtr pfnTargetToInvoke, $CallConversionInterpreterLocals context, ConservativelyReportedRegionDesc regionDesc) in RunFunctionWithConservativelyReportedBufferInternal:line 15732480
   at Internal.Runtime.Augments.RuntimeAugments.RunFunctionWithConservativelyReportedBuffer<Internal.Runtime.TypeLoader.CallConversionParameters>(Int32 cbBuffer, IntPtr pfnTargetToInvoke, $CallConversionParameters context) in RunFunctionWithConservativelyReportedBuffer:line 16707566
   at Internal.Runtime.TypeLoader.CallConverterThunk.CallConversionThunk(IntPtr callerTransitionBlockParam, IntPtr callConversionId) in CallConversionThunk:line 16707566
   at Internal.Runtime.Augments.RuntimeAugments.CallDescrWorker(IntPtr callDescr) in f:\dd\ndp\fxcore\CoreRT\src\System.Private.CoreLib\src\Internal\Runtime\Augments\RuntimeAugments.cs:line 969
   at Internal.Runtime.TypeLoader.CallConverterThunk.InvokeTarget(Void* allocatedStackBuffer, $CallConversionParameters conversionParams) in InvokeTarget:line 16707566
   at Internal.Runtime.Augments.RuntimeAugments.RunFunctionWithConservativelyReportedBufferInternal<Internal.Runtime.CallInterceptor.CallConversionInterpreter+CallConversionInterpreterLocals>(Int32 cbBuffer, IntPtr pfnTargetToInvoke, $CallConversionInterpreterLocals context, ConservativelyReportedRegionDesc regionDesc) in RunFunctionWithConservativelyReportedBufferInternal:line 15732480
   at Internal.Runtime.Augments.RuntimeAugments.RunFunctionWithConservativelyReportedBuffer<Internal.Runtime.TypeLoader.CallConversionParameters>(Int32 cbBuffer, IntPtr pfnTargetToInvoke, $CallConversionParameters context) in RunFunctionWithConservativelyReportedBuffer:line 16707566
   at Internal.Runtime.TypeLoader.CallConverterThunk.CallConversionThunk(IntPtr callerTransitionBlockParam, IntPtr callConversionId) in CallConversionThunk:line 16707566
   at System.Collections.Generic.Tests.EqualityComparerTests.NullableEquals<System.__UniversalCanon>(__UniversalCanon left, __UniversalCanon right, Boolean expected)
   at Internal.Runtime.Augments.RuntimeAugments.CallDescrWorker(IntPtr callDescr) in f:\dd\ndp\fxcore\CoreRT\src\System.Private.CoreLib\src\Internal\Runtime\Augments\RuntimeAugments.cs:line 969
   at Internal.Runtime.TypeLoader.CallConverterThunk.InvokeTarget(Void* allocatedStackBuffer, $CallConversionParameters conversionParams) in InvokeTarget:line 16707566
   at Internal.Runtime.Augments.RuntimeAugments.RunFunctionWithConservativelyReportedBufferInternal<Internal.Runtime.CallInterceptor.CallConversionInterpreter+CallConversionInterpreterLocals>(Int32 cbBuffer, IntPtr pfnTargetToInvoke, $CallConversionInterpreterLocals context, ConservativelyReportedRegionDesc regionDesc) in RunFunctionWithConservativelyReportedBufferInternal:line 15732480
   at Internal.Runtime.Augments.RuntimeAugments.RunFunctionWithConservativelyReportedBuffer<Internal.Runtime.TypeLoader.CallConversionParameters>(Int32 cbBuffer, IntPtr pfnTargetToInvoke, $CallConversionParameters context) in RunFunctionWithConservativelyReportedBuffer:line 16707566
   at Internal.Runtime.TypeLoader.CallConverterThunk.CallConversionThunk(IntPtr callerTransitionBlockParam, IntPtr callConversionId) in CallConversionThunk:line 16707566
   at Internal.Runtime.Augments.RuntimeAugments.CallDescrWorker(IntPtr callDescr) in f:\dd\ndp\fxcore\CoreRT\src\System.Private.CoreLib\src\Internal\Runtime\Augments\RuntimeAugments.cs:line 969
   at Internal.Runtime.TypeLoader.CallConverterThunk.InvokeTarget(Void* allocatedStackBuffer, $CallConversionParameters conversionParams) in InvokeTarget:line 16707566
   at Internal.Runtime.Augments.RuntimeAugments.RunFunctionWithConservativelyReportedBufferInternal<Internal.Runtime.CallInterceptor.CallConversionInterpreter+CallConversionInterpreterLocals>(Int32 cbBuffer, IntPtr pfnTargetToInvoke, $CallConversionInterpreterLocals context, ConservativelyReportedRegionDesc regionDesc) in RunFunctionWithConservativelyReportedBufferInternal:line 15732480
   at Internal.Runtime.Augments.RuntimeAugments.RunFunctionWithConservativelyReportedBuffer<Internal.Runtime.TypeLoader.CallConversionParameters>(Int32 cbBuffer, IntPtr pfnTargetToInvoke, $CallConversionParameters context) in RunFunctionWithConservativelyReportedBuffer:line 16707566
   at Internal.Runtime.TypeLoader.CallConverterThunk.CallConversionThunk(IntPtr callerTransitionBlockParam, IntPtr callConversionId) in CallConversionThunk:line 16707566
   at System.InvokeUtils.CalliIntrinsics.Call(IntPtr dynamicInvokeHelperMethod, Object thisPtr, IntPtr methodToCall, ArgSetupState argSetupState, Boolean isTargetThisCall)
   at System.InvokeUtils.CallDynamicInvokeMethod(Object thisPtr, IntPtr methodToCall, Object thisPtrDynamicInvokeMethod, IntPtr dynamicInvokeHelperMethod, IntPtr dynamicInvokeHelperGenericDictionary, Object targetMethodOrDelegate, Object[] parameters, BinderBundle binderBundle, Boolean wrapInTargetInvocationException, Boolean invokeMethodHelperIsThisCall, Boolean methodToCallIsThisCall) in CallDynamicInvokeMethod:line 16707566

Build : Master - 20180411.01 (UWP ILC Tests)
Failing configurations:

• Windows.10.Amd64.ClientRS3-x64
  • Release

Details:
https://mc.dot.net/#/product/netcore/master/source/official~2Fcorefx~2Fmaster~2F/type/test~2Ffunctional~2Filc~2F/build/20180411.01/workItem/System.Collections.Tests/analysis/xunit/System.Collections.Generic.Tests.EqualityComparerTests~2FNullableEquals(left:%200,%20right:%20128,%20expected:%20False)

[fadimounir]

This issue has been fixed a few months ago