diff options
| -rw-r--r-- | src/System.Private.CoreLib/src/System/Runtime/InteropServices/Marshal.cs | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/src/System.Private.CoreLib/src/System/Runtime/InteropServices/Marshal.cs b/src/System.Private.CoreLib/src/System/Runtime/InteropServices/Marshal.cs index ff9844e206..ed3d648586 100644 --- a/src/System.Private.CoreLib/src/System/Runtime/InteropServices/Marshal.cs +++ b/src/System.Private.CoreLib/src/System/Runtime/InteropServices/Marshal.cs @@ -1540,7 +1540,19 @@ namespace System.Runtime.InteropServices /// metadata then it is returned otherwise a stable guid is generated based /// on the fully qualified name of the type. /// </summary> - public static Guid GenerateGuidForType(Type type) => type.GUID; + public static Guid GenerateGuidForType(Type type) + { + if (type == null) + { + throw new ArgumentNullException(nameof(type)); + } + if (!(type is RuntimeType)) + { + throw new ArgumentException(SR.Argument_MustBeRuntimeType, nameof(type)); + } + + return type.GUID; + } /// <summary> /// This method generates a PROGID for the specified type. If the type has |