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authorstakx <stakx@eml.cc>2018-05-07 18:28:37 +0200
committerAtsushi Kanamori <AtsushiKan@users.noreply.github.com>2018-05-07 09:28:37 -0700
commitdbcfd2f9d18a595757194202de518b62ae9eb9f7 (patch)
tree49f9f9277c558f4a71611a1347718637b88ea11a
parentfceac03e8202fb07dc1bb3b4f3ec3cf0921e12de (diff)
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Reflection: Fix DefaultValue for optional DateTime (#17877)
Querying the default value of an optional `DateTime` parameter using `ParameterInfo.DefaultValue` can throw a `FormatException` if that default value is a null constant in metadata, which is how the C# compiler encodes a default value of `default(DateTime)`. This commit fixes that error by adding the proper handling for null metadata constants with `DateTime` parameters.
-rw-r--r--src/mscorlib/src/System/Reflection/MdConstant.cs3
1 files changed, 3 insertions, 0 deletions
diff --git a/src/mscorlib/src/System/Reflection/MdConstant.cs b/src/mscorlib/src/System/Reflection/MdConstant.cs
index 8e5b65724d..7337039908 100644
--- a/src/mscorlib/src/System/Reflection/MdConstant.cs
+++ b/src/mscorlib/src/System/Reflection/MdConstant.cs
@@ -94,6 +94,9 @@ namespace System.Reflection
defaultValue = buffer;
break;
+ case CorElementType.Class:
+ return null;
+
default:
throw new FormatException(SR.Arg_BadLiteralFormat);
#endregion