ILVerify incorrectly complains about use of initonly field outside of constructor+

Description

ILVerify is rejecting C# code compiled using the normal compiler from the .NET SDK.

Reproduction Steps

Compile an assembly containing a class like this:

internal class ILVerifyDoesNotLikeThis {

  private static readonly DateTimeOffset FixedUtcTime = new(1969, 7, 20, 20, 17, 40, TimeSpan.Zero);

  public DateTimeOffset UtcNow => ILVerifyDoesNotLikeThis.FixedUtcTime.ToUniversalTime();

}

Run ILVerify on it.

I doubt it matters, but in my case, the compile used MSBuild version 17.7.3+8ec440e68 for .NET, targeting net6.0 in Debug configuration.

Expected behavior

No errors detected by ILVerify.

Actual behavior

ILVerify reports an error:

[IL]: Error [InitOnly]: [\Path\To\Assembly.dll : Some.Namespace.ILVerifyDoesNotLikeThis::get_UtcNow()][offset 0x00000000] Cannot change initonly field outside its .ctor.

The code does not actually change any fields.

IL for the getter:

.method /* 06001BBB */ public hidebysig specialname 
	instance valuetype [System.Runtime]System.DateTimeOffset get_UtcNow () cil managed 
{
	// Method begins at RVA 0xdfcb7
	// Header size: 1
	// Code size: 11 (0xb)
	.maxstack 8

	// return ILVerifyDoesNotLikeThis.FixedUtcTime.ToUniversalTime();
	// sequence point: (line 1597, col 35) to (line 1597, col 89) in C:\Sources\Anubex\natural-services.dotnet\Anubex.NaturalServices.Tests\DummyObjects\DummyProcessor.cs
	IL_0000: ldsflda valuetype [System.Runtime]System.DateTimeOffset Anubex.NaturalServices.Tests.DummyObjects.ILVerifyDoesNotLikeThis::FixedUtcTime /* 040011F2 */
	IL_0005: call instance valuetype [System.Runtime]System.DateTimeOffset [System.Runtime]System.DateTimeOffset::ToUniversalTime() /* 0A0000D3 */
	IL_000a: ret
} // end of method ILVerifyDoesNotLikeThis::get_UtcNow

(would be nice if GitHub supported IL highlighting, btw)

Looking at #57385 it looks like support for ldflda was added but ldsflda was left out.

Regression?

No response

Known Workarounds

No response

Configuration

ILVerify --version reports 7.0.0-rtm.22518.5+d099f075e45d2aa6007a22b71b45a08758559f80, which should be the current version.

Output of dotnet --info:

.NET SDK:
 Version:   7.0.402
 Commit:    791db8e2d8

Runtime Environment:
 OS Name:     Windows
 OS Version:  10.0.19045
 OS Platform: Windows
 RID:         win10-x64
 Base Path:   C:\Program Files\dotnet\sdk\7.0.402\

Host:
  Version:      7.0.12
  Architecture: x64
  Commit:       4a824ef37c

.NET SDKs installed:
  6.0.416 [C:\Program Files\dotnet\sdk]
  7.0.304 [C:\Program Files\dotnet\sdk]
  7.0.402 [C:\Program Files\dotnet\sdk]

.NET runtimes installed:
  Microsoft.AspNetCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.23 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 6.0.24 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.AspNetCore.App 7.0.12 [C:\Program Files\dotnet\shared\Microsoft.AspNetCore.App]
  Microsoft.NETCore.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.23 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 6.0.24 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.NETCore.App 7.0.12 [C:\Program Files\dotnet\shared\Microsoft.NETCore.App]
  Microsoft.WindowsDesktop.App 3.1.32 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.5 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.23 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 6.0.24 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]
  Microsoft.WindowsDesktop.App 7.0.12 [C:\Program Files\dotnet\shared\Microsoft.WindowsDesktop.App]

Other architectures found:
  x86   [C:\Program Files (x86)\dotnet]
    registered at [HKLM\SOFTWARE\dotnet\Setup\InstalledVersions\x86\InstallLocation]

Environment variables:
  Not set

global.json file:
  Not found

Learn more:
  https://aka.ms/dotnet/info

Download .NET:
  https://aka.ms/dotnet/download

Other information

No response