standalone repro 10564

Makefile

all: Repro10564.exe

.PHONY: all clean

Repro10564.exe: Repro10564.cs Mods.dll
	csc /out:$@ /target:exe $< -r:./Mods.dll

Mods.dll: Mods.il
	ilasm /output:$@ /dll $<

Mods.il

.assembly extern mscorlib
{
  .publickeytoken = (B7 7A 5C 56 19 34 E0 89 )                         // .z\V.4..
  .ver 4:0:0:0
}

.assembly Mods
{
  .custom instance void [mscorlib]System.Runtime.CompilerServices.CompilationRelaxationsAttribute::.ctor(int32) = ( 01 00 08 00 00 00 00 00 ) 
  .custom instance void [mscorlib]System.Runtime.CompilerServices.RuntimeCompatibilityAttribute::.ctor() = ( 01 00 01 00 54 02 16 57 72 61 70 4E 6F 6E 45 78   // ....T..WrapNonEx
                                                                                                             63 65 70 74 69 6F 6E 54 68 72 6F 77 73 01 )       // ceptionThrows.
  .hash algorithm 0x00008004
  .ver 0:0:0:0
}
.module Mods.dll

.class public auto ansi beforefieldinit CL1`1<T1>
       extends[mscorlib] System.Object
{
    .method public hidebysig specialname rtspecialname
            instance void  .ctor() cil managed
    {
      // Code size       7 (0x7)
      .maxstack  1
      IL_0000: ldarg.0
      IL_0001: call instance void[mscorlib] System.Object::.ctor()
      IL_0006: ret
    } // end of method CL1`1::.ctor
    .property instance !T1 modopt([mscorlib]System.Runtime.CompilerServices.IsConst)
            Test()
    {
      .get instance !T1 modopt([mscorlib]System.Runtime.CompilerServices.IsConst) CL1`1::get_Test()
      .set instance void CL1`1::set_Test(!T1 modopt([mscorlib]System.Runtime.CompilerServices.IsConst))
    } // end of property CL1`1::Test
    .method public hidebysig newslot specialname virtual
            instance !T1 modopt([mscorlib]System.Runtime.CompilerServices.IsConst) 
            get_Test() cil managed
    {
      // Code size       2 (0x2)
      .maxstack  1
      IL_0000: ldarg.0
      IL_0001: throw
    } // end of method CL1`1::get_Test
    .method public hidebysig newslot specialname virtual
            instance void  set_Test(!T1 modopt([mscorlib]System.Runtime.CompilerServices.IsConst) x) cil managed
    {
      // Code size       3 (0x3)
      .maxstack  1
      IL_0000: ldarg.0
      IL_0001: throw
      IL_0002:  ret
    } // end of method CL1`1::set_Test
} // end of class CL1`1
.class public auto ansi beforefieldinit CL2
       extends class CL1`1<int32 modopt([mscorlib]System.Runtime.CompilerServices.IsLong)>
{
    .method public hidebysig specialname rtspecialname
            instance void  .ctor() cil managed
{
      // Code size       7 (0x7)
      .maxstack  1
      IL_0000:  ldarg.0
      IL_0001:  call instance void class CL1`1<int32 modopt([mscorlib]System.Runtime.CompilerServices.IsLong)>::.ctor()
      IL_0006:  ret
    } // end of method CL2::.ctor
} // end of class CL2

Repro10564.cs

class Module1
{
    static void Main()
    {
        CL2 x = new CL3();
        x.Test = 0;
        var y = x.Test;
	// expected output:
	//
	// Set Overridden
	// Get Overridden
    }
}
class CL3
    : CL2
{
    public override int Test
    {
        get
        {
            System.Console.WriteLine("Get Overridden");
            return 0;
        }
        set
        {
            System.Console.WriteLine("Set Overridden");
        }
    }
}