Closed
Description
Environment
- Pythonnet version: master@c81c3c3db7fcc403d5f4e8298b320240829daab2
- Python version: 3.7, 3.9 (both x64)
- Operating System: Windows
Details
This is a regression introduced in c81c3c3 .
- If there is a parameterless constructor (and probably a method too) that has an overload with at least one parameter
params
parameter, when called from Python, an InvalidIndexError will be raised from Python for .NET.
Callstack from when called from within Unity
System.ArgumentOutOfRangeException : Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
---
at System.Collections.ArrayList.get_Item (System.Int32 index) [0x0001c] in <437ba245d8404784b9fbab9b439ac908>:0
at Python.Runtime.MethodBinder.TryConvertArguments (System.Reflection.ParameterInfo[] pi, System.Boolean paramsArray, System.IntPtr args, System.Int32 pyArgCount, System.Collections.Generic.Dictionary`2[TKey,TValue] kwargDict, System.Collections.ArrayList defaultArgList, System.Boolean needsResolution, System.Int32& outs) [0x0008a] in <d0b807c6e27c43ea84a0e3a3c643e888>:0
at Python.Runtime.MethodBinder.Bind (System.IntPtr inst, System.IntPtr args, System.IntPtr kw, System.Reflection.MethodBase info, System.Reflection.MethodInfo[] methodinfo) [0x0017c] in <d0b807c6e27c43ea84a0e3a3c643e888>:0
at Python.Runtime.MethodBinder.Bind (System.IntPtr inst, System.IntPtr args, System.IntPtr kw, System.Reflection.MethodBase info) [0x00000] in <d0b807c6e27c43ea84a0e3a3c643e888>:0
at Python.Runtime.ConstructorBinder.InvokeRaw (System.IntPtr inst, System.IntPtr args, System.IntPtr kw, System.Reflection.MethodBase info) [0x00074] in <d0b807c6e27c43ea84a0e3a3c643e888>:0
at Python.Runtime.ConstructorBinder.InvokeRaw (System.IntPtr inst, System.IntPtr args, System.IntPtr kw) [0x00000] in <d0b807c6e27c43ea84a0e3a3c643e888>:0
at Python.Runtime.ClassObject.tp_new (System.IntPtr tp, System.IntPtr args, System.IntPtr kw) [0x000b5] in <d0b807c6e27c43ea84a0e3a3c643e888>:0
at Python.Runtime.NativeCall.Call_3 (System.IntPtr fp, System.IntPtr a1, System.IntPtr a2, System.IntPtr a3) [0x00006] in <d0b807c6e27c43ea84a0e3a3c643e888>:0
at Python.Runtime.MetaType.tp_call (System.IntPtr tp, System.IntPtr args, System.IntPtr kw) [0x00024] in <d0b807c6e27c43ea84a0e3a3c643e888>:0
at (wrapper managed-to-native) Python.Runtime.Runtime.PyRun_String(string,Python.Runtime.RunFlagType,intptr,intptr)
I have a patch to show how to reproduce it (although it crashes pytest)
diff --git a/src/testing/constructortests.cs b/src/testing/constructortests.cs
index 8800c94..ecc61ce 100644
--- a/src/testing/constructortests.cs
+++ b/src/testing/constructortests.cs
@@ -48,4 +48,22 @@ namespace Python.Test
value = v;
}
}
+
+ public class MultipleConstructorsTest
+ {
+ public string value;
+ public Type[] type;
+
+ public MultipleConstructorsTest()
+ {
+ value = "";
+ type = new Type[1] { null };
+ }
+
+ public MultipleConstructorsTest(string s, params Type[] tp)
+ {
+ value = s;
+ type = tp;
+ }
+ }
}
diff --git a/src/tests/test_constructors.py b/src/tests/test_constructors.py
index 5e54896..c305377 100644
--- a/src/tests/test_constructors.py
+++ b/src/tests/test_constructors.py
@@ -44,3 +44,12 @@ def test_subclass_constructor():
instance = Sub()
ob = SubclassConstructorTest(instance)
assert isinstance(ob.value, System.Exception)
+
+
+def test_multiple_constructor():
+ from Python.Test import MultipleConstructorsTest
+ import System
+
+ # Test parameterless
+ ob = MultipleConstructorsTest()
+ assert ob.value == ""
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