Added additional GetLastPInvokeErrorMessage() API

src/libraries/System.Private.CoreLib/src/System/Runtime/InteropServices/Marshal.cs

@@ -1296,5 +1296,14 @@ public static int GetLastWin32Error()
         {
             return GetLastPInvokeError();
         }
+
+        /// <summary>
+        /// Gets the system error message for the last PInvoke error code.
+        /// </summary>
+        /// <returns>The error message associated with the last PInvoke error code.</returns>
+        public static string GetLastPInvokeErrorMessage()
+        {
+            return GetPInvokeErrorMessage(GetLastPInvokeError());
+        }
     }
 }

src/libraries/System.Runtime.InteropServices/ref/System.Runtime.InteropServices.cs

@@ -586,6 +586,7 @@ public static void FreeHGlobal(System.IntPtr hglobal) { }
         public static int GetLastPInvokeError() { throw null; }
         public static int GetLastSystemError() { throw null; }
         public static int GetLastWin32Error() { throw null; }
+        public static string GetLastPInvokeErrorMessage() { throw null; }
         public static string GetPInvokeErrorMessage(int error) { throw null; }
         [System.Runtime.Versioning.SupportedOSPlatformAttribute("windows")]
         [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]

src/libraries/System.Runtime.InteropServices/tests/System.Runtime.InteropServices.UnitTests/System/Runtime/InteropServices/Marshal/PInvokeErrorMessageTests.cs

@@ -39,6 +39,16 @@ public void PInvokeErrorMessage_Returns_Win32Exception_Message(int error)
             Assert.Equal(expected, Marshal.GetPInvokeErrorMessage(error));
         }
 
+        [Theory]
+        [MemberData(nameof(GetErrorCode_TestData))]
+        public void LastPInvokeErrorMessage_Returns_Correct_Message(int error)
+        {
+            string expected = Marshal.GetPInvokeErrorMessage(error);
+
+            Marshal.SetLastPInvokeError(error);
+            Assert.Equal(expected, Marshal.GetLastPInvokeErrorMessage());
+        }
+
         [Fact]
         [PlatformSpecific(TestPlatforms.Windows)]
         public void PInvokeErrorMessage_Returns_UniqueMessage_Windows()

src/libraries/System.Security.Principal.Windows/src/System/Security/Principal/WindowsIdentity.cs

@@ -131,7 +131,7 @@ public WindowsIdentity(string sUserPrincipalName)
                 unsafe
                 {
                     if (!Interop.Advapi32.AllocateLocallyUniqueId(&sourceContext.SourceIdentifier))
-                        throw new SecurityException(Marshal.GetPInvokeErrorMessage(Marshal.GetLastPInvokeError()));
+                        throw new SecurityException(Marshal.GetLastPInvokeErrorMessage());
 
                     sourceName.AsSpan().CopyTo(new Span<byte>(sourceContext.SourceName, TOKEN_SOURCE.TOKEN_SOURCE_LENGTH));
                 }
@@ -264,7 +264,7 @@ private static SafeAccessTokenHandle DuplicateAccessToken(IntPtr accessToken)
                     true,
                     Interop.DuplicateHandleOptions.DUPLICATE_SAME_ACCESS))
             {
-                throw new SecurityException(Marshal.GetPInvokeErrorMessage(Marshal.GetLastPInvokeError()));
+                throw new SecurityException(Marshal.GetLastPInvokeErrorMessage());
             }
 
             return duplicateAccessToken;
@@ -465,15 +465,15 @@ private bool CheckNtTokenForSid(SecurityIdentifier sid)
                                                       (uint)TokenImpersonationLevel.Identification,
                                                       (uint)TokenType.TokenImpersonation,
                                                       ref token))
-                        throw new SecurityException(Marshal.GetPInvokeErrorMessage(Marshal.GetLastPInvokeError()));
+                        throw new SecurityException(Marshal.GetLastPInvokeErrorMessage());
                 }
 
 
                 // CheckTokenMembership will check if the SID is both present and enabled in the access token.
                 if (!Interop.Advapi32.CheckTokenMembership((til != TokenImpersonationLevel.None ? _safeTokenHandle : token),
                                                       sid.BinaryForm,
                                                       ref isMember))
-                    throw new SecurityException(Marshal.GetPInvokeErrorMessage(Marshal.GetLastPInvokeError()));
+                    throw new SecurityException(Marshal.GetLastPInvokeErrorMessage());
 
 
             }
@@ -756,7 +756,7 @@ private static void RunImpersonatedInternal(SafeAccessTokenHandle token, Action
                 delegate
                 {
                     if (!Interop.Advapi32.RevertToSelf())
-                        Environment.FailFast(Marshal.GetPInvokeErrorMessage(Marshal.GetLastPInvokeError()));
+                        Environment.FailFast(Marshal.GetLastPInvokeErrorMessage());
 
                     s_currentImpersonatedToken.Value = null;
 
@@ -776,12 +776,12 @@ private static void CurrentImpersonatedTokenChanged(AsyncLocalValueChangedArgs<S
                 return; // we handle explicit Value property changes elsewhere.
 
             if (!Interop.Advapi32.RevertToSelf())
-                Environment.FailFast(Marshal.GetPInvokeErrorMessage(Marshal.GetLastPInvokeError()));
+                Environment.FailFast(Marshal.GetLastPInvokeErrorMessage());
 
             if (args.CurrentValue != null && !args.CurrentValue.IsInvalid)
             {
                 if (!Interop.Advapi32.ImpersonateLoggedOnUser(args.CurrentValue))
-                    Environment.FailFast(Marshal.GetPInvokeErrorMessage(Marshal.GetLastPInvokeError()));
+                    Environment.FailFast(Marshal.GetLastPInvokeErrorMessage());
             }
         }
 
@@ -899,7 +899,7 @@ private static Interop.LUID GetLogonAuthId(SafeAccessTokenHandle safeTokenHandle
                                                              dwLength,
                                                              out _);
                     if (!result)
-                        throw new SecurityException(Marshal.GetPInvokeErrorMessage(Marshal.GetLastPInvokeError()));
+                        throw new SecurityException(Marshal.GetLastPInvokeErrorMessage());
                     break;
                 case Interop.Errors.ERROR_INVALID_HANDLE:
                     throw new ArgumentException(SR.Argument_InvalidImpersonationToken);

src/libraries/System.Security.Principal.Windows/src/System/Security/Principal/WindowsPrincipal.cs

@@ -153,7 +153,7 @@ public virtual bool IsInRole(SecurityIdentifier sid)
                                                   (uint)TokenImpersonationLevel.Identification,
                                                   (uint)TokenType.TokenImpersonation,
                                                   ref token))
-                    throw new SecurityException(Marshal.GetPInvokeErrorMessage(Marshal.GetLastPInvokeError()));
+                    throw new SecurityException(Marshal.GetLastPInvokeErrorMessage());
             }
 
             bool isMember = false;
@@ -162,7 +162,7 @@ public virtual bool IsInRole(SecurityIdentifier sid)
             if (!Interop.Advapi32.CheckTokenMembership((_identity.ImpersonationLevel != TokenImpersonationLevel.None ? _identity.AccessToken : token),
                                                   sid.BinaryForm,
                                                   ref isMember))
-                throw new SecurityException(Marshal.GetPInvokeErrorMessage(Marshal.GetLastPInvokeError()));
+                throw new SecurityException(Marshal.GetLastPInvokeErrorMessage());
 
             token.Dispose();
             return isMember;