Stack overflow when print a KOSDelegate with args of lexicon contains itself

[longdishort]

I am trying to introduce object oriented programming based on lexicon and binded KOSDelegate, and serveral game crash happened when I debug my script.
This happened in KOS 1.2.1.0 / KSP 1.9.1 but I think it will happened in the latest version (but I can't test it.)

Here is a example of script that cause the crash:

function memberFunc {
	parameter self.
}
function new {
	local self is lexicon().
	set self:memberFunc to memberFunc@:bind(self).
	return self.
}
local obj is new().
print obj.

Some log after crash:

[EXC 15:51:05.908] StackOverflowException: The requested operation caused a stack overflow.
	kOS.Safe.Serialization.SafeSerializationMgr.DumpValue (System.Object value, System.Boolean includeType) (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Serialization.SafeSerializationMgr.Dump (kOS.Safe.Serialization.IDumper dumper, System.Boolean includeType) (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Serialization.SafeSerializationMgr.Serialize (kOS.Safe.Serialization.IDumper serialized, kOS.Safe.Serialization.IFormatWriter formatter, System.Boolean includeType) (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Serialization.SafeSerializationMgr.ToString (kOS.Safe.Serialization.IDumper dumper) (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Encapsulation.Lexicon.ToString () (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	System.String.Concat (System.Object arg0, System.Object arg1, System.Object arg2) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
	kOS.Safe.Encapsulation.KOSDelegate.ToString () (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Encapsulation.UserDelegate.ToString () (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Serialization.SafeSerializationMgr.DumpValue (System.Object value, System.Boolean includeType) (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Serialization.SafeSerializationMgr+<>c__DisplayClass7_0.<DumpValue>b__0 (System.Object v) (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	System.Linq.Enumerable+SelectListIterator`2[TSource,TResult].ToList () (at <fbb5ed17eb6e46c680000f8910ebb50c>:0)
	System.Linq.Enumerable.ToList[TSource] (System.Collections.Generic.IEnumerable`1[T] source) (at <fbb5ed17eb6e46c680000f8910ebb50c>:0)
	kOS.Safe.Serialization.SafeSerializationMgr.DumpValue (System.Object value, System.Boolean includeType) (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Serialization.SafeSerializationMgr.Dump (kOS.Safe.Serialization.IDumper dumper, System.Boolean includeType) (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Serialization.SafeSerializationMgr.Serialize (kOS.Safe.Serialization.IDumper serialized, kOS.Safe.Serialization.IFormatWriter formatter, System.Boolean includeType) (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Serialization.SafeSerializationMgr.ToString (kOS.Safe.Serialization.IDumper dumper) (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	kOS.Safe.Encapsulation.Lexicon.ToString () (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
	System.String.Concat (System.Object arg0, System.Object arg1, System.Object arg2) (at <ad04dee02e7e4a85a1299c7ee81c79f6>:0)
	kOS.Safe.Encapsulation.KOSDelegate.ToString () (at <1f05d5b75d1c42729d0e0281470dcabd>:0)
... and more

It crashs not only when I print it, but also when I run the script with some bugs in the script, which really bothers me.

[nuggreat]

duplicate of issue #1598 and will likely be fixed by PR #2882