WinCPP

D:\WinCPP\corefx\src\System.Private.Xml\tests\XPath\XPathDocument>msbuild /t:RebuildAndTest System.Xml.XPath.Tests.csproj
Microsoft (R) Build Engine version 15.3.409.57025 for .NET Framework
Copyright (C) Microsoft Corporation. All rights reserved.

Build started 11/2/2017 11:49:59 PM.
Project "D:\WinCPP\corefx\src\System.Private.Xml\tests\XPath\XPathDocument\System.Xml.XPath.Tests.csproj" on node 1 (RebuildAndTest target(s)).
CoreClean:
  Deleting file "D:\WinCPP\corefx\bin\Windows_NT.AnyCPU.Debug\System.Xml.XPath.Tests\netcoreapp\System.Xml.XPath.Tests.dll".
  Deleting file "D:\WinCPP\corefx\bin\Windows_NT.AnyCPU.Debug\System.Xml.XPath.Tests\netcoreapp\System.Xml.XPath.Tests.pdb".
  Deleting file "D:\WinCPP\corefx\bin\obj\Windows_NT.AnyCPU.Debug\System.Xml.XPath.Tests\netcoreapp\System.Xml.XPath.Tests.csprojResolveAssemblyReference.cache".

WinCPP

  ; Assembly listing for method System.Numerics.Tests.GenericVectorTests:TestConstructorArrayWithCountException():this
  ; Emitting BLENDED_CODE for X64 CPU with AVX
  ; debuggable code
  ; rbp based frame
  ; fully interruptible
  ; Final local variable assignments
  ;
  ;  V00 this         [V00    ] (  1,  0   )     ref  ->  [rbp+0x10]   do-not-enreg[] this class-hnd
  ;  V01 loc0         [V01    ] (  4,  4   )     ref  ->  [rbp-0x18]   do-not-enreg[] must-init class-hnd exact
  ;  V02 loc1         [V02,T01] (  2,  2   )  simd32  ->  [rbp-0x50]   do-not-enreg[SB] must-init ld-addr-op

WinCPP

  ; Assembly listing for method System.Numerics.Tests.GenericVectorTests:TestConstructorArrayWithCountException():this
  ; Emitting BLENDED_CODE for X64 CPU with AVX
  ; debuggable code
  ; rbp based frame
  ; fully interruptible
  ; Final local variable assignments
  ;
  ;  V00 this         [V00    ] (  1,  0   )     ref  ->  [rbp+0x10]   do-not-enreg[] this class-hnd
  ;  V01 loc0         [V01    ] (  4,  4   )     ref  ->  [rbp-0x18]   do-not-enreg[] must-init class-hnd exact
  ;  V02 loc1         [V02,T01] (  2,  2   )  simd32  ->  [rbp-0x50]   do-not-enreg[SB] must-init ld-addr-op

WinCPP

diff --git a/src/System.Text.Json/ref/System.Text.Json.cs b/src/System.Text.Json/ref/System.Text.Json.cs
index fd42e29f0c..e51a312d4e 100644
--- a/src/System.Text.Json/ref/System.Text.Json.cs
+++ b/src/System.Text.Json/ref/System.Text.Json.cs
@@ -134,8 +134,8 @@ public partial class JsonException : System.Exception
     public partial struct JsonReaderOptions
     {
         private int _dummyPrimitive;
-        public bool AllowTrailingCommas { get { throw null; } set { } }
-        public System.Text.Json.JsonCommentHandling CommentHandling { get { throw null; } set { } }

WinCPP

Microsoft (R) Build Engine version 16.2.0-preview.19264.2+c3389964c for .NET Core
Copyright (C) Microsoft Corporation. All rights reserved.

  System.Text.Json.Tests -> D:\WinCPP\corefx\artifacts\bin\System.Text.Json.Tests\netcoreapp-Debug\System.Text.Json.Tests.dll
  ----- start Mon 06/24/2019  1:01:29.45 ===============  To repro directly: ===================================================== 
  pushd D:\WinCPP\corefx\artifacts\bin\System.Text.Json.Tests\netcoreapp-Debug\
  "D:\WinCPP\corefx\artifacts\bin\testhost\netcoreapp-Windows_NT-Debug-x64\dotnet.exe" xunit.console.dll System.Text.Json.Tests.dll -xml testResults.xml -nologo -notrait category=nonnetcoreapptests -notrait category=nonwindowstests -notrait category=OuterLoop -notrait category=failing 
  popd
  ===========================================================================================================
    Discovering: System.Text.Json.Tests (method display = ClassAndMethod, method display options = None)