[generator] Use GC.KeepAlive for reference type method parameters.

jpobst · jpobst · commit 143a0f7eef0b · 2020-09-18T09:29:43.000-05:00
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteClass.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteClass.txt
@@ -162,6 +162,7 @@ public partial class MyClass  {
 				_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 			} finally {
 				JNIEnv.DeleteLocalRef (native_value);
+				global::System.GC.KeepAlive (value);
 			}
 		}
 	}
@@ -260,6 +261,7 @@ public partial class MyClass  {
 			return __rm;
 		} finally {
 			JNIEnv.DeleteLocalRef (native_key);
+			global::System.GC.KeepAlive (key);
 		}
 	}
 
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteClassMethods.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteClassMethods.txt
@@ -29,6 +29,7 @@ public virtual unsafe int GetCountForKey (string key)
 		return __rm;
 	} finally {
 		JNIEnv.DeleteLocalRef (native_key);
+		global::System.GC.KeepAlive (key);
 	}
 }
 
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteClassProperties.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteClassProperties.txt
@@ -109,6 +109,7 @@ public virtual unsafe string Key {
 			_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 		} finally {
 			JNIEnv.DeleteLocalRef (native_value);
+			global::System.GC.KeepAlive (value);
 		}
 	}
 }
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteKotlinUnsignedArrayTypeMethodsClass.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteKotlinUnsignedArrayTypeMethodsClass.txt
@@ -27,6 +27,7 @@ public partial class MyClass  {
 				JNIEnv.CopyArray (native_value, value);
 				JNIEnv.DeleteLocalRef (native_value);
 			}
+			global::System.GC.KeepAlive (value);
 		}
 	}
 
@@ -46,6 +47,7 @@ public partial class MyClass  {
 				JNIEnv.CopyArray (native_value, value);
 				JNIEnv.DeleteLocalRef (native_value);
 			}
+			global::System.GC.KeepAlive (value);
 		}
 	}
 
@@ -65,6 +67,7 @@ public partial class MyClass  {
 				JNIEnv.CopyArray (native_value, value);
 				JNIEnv.DeleteLocalRef (native_value);
 			}
+			global::System.GC.KeepAlive (value);
 		}
 	}
 
@@ -84,6 +87,7 @@ public partial class MyClass  {
 				JNIEnv.CopyArray (native_value, value);
 				JNIEnv.DeleteLocalRef (native_value);
 			}
+			global::System.GC.KeepAlive (value);
 		}
 	}
 
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteKotlinUnsignedArrayTypePropertiesClass.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteKotlinUnsignedArrayTypePropertiesClass.txt
@@ -36,6 +36,7 @@ public partial class MyClass  {
 					JNIEnv.CopyArray (native_value, value);
 					JNIEnv.DeleteLocalRef (native_value);
 				}
+				global::System.GC.KeepAlive (value);
 			}
 		}
 	}
@@ -65,6 +66,7 @@ public partial class MyClass  {
 					JNIEnv.CopyArray (native_value, value);
 					JNIEnv.DeleteLocalRef (native_value);
 				}
+				global::System.GC.KeepAlive (value);
 			}
 		}
 	}
@@ -94,6 +96,7 @@ public partial class MyClass  {
 					JNIEnv.CopyArray (native_value, value);
 					JNIEnv.DeleteLocalRef (native_value);
 				}
+				global::System.GC.KeepAlive (value);
 			}
 		}
 	}
@@ -123,6 +126,7 @@ public partial class MyClass  {
 					JNIEnv.CopyArray (native_value, value);
 					JNIEnv.DeleteLocalRef (native_value);
 				}
+				global::System.GC.KeepAlive (value);
 			}
 		}
 	}
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteKotlinUnsignedTypePropertiesClass.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/JavaInterop1/WriteKotlinUnsignedTypePropertiesClass.txt
@@ -103,6 +103,7 @@ public partial class MyClass  {
 				__args [0] = new JniArgumentValue (value);
 				_members.InstanceMethods.InvokeAbstractVoidMethod (__id, this, __args);
 			} finally {
+				global::System.GC.KeepAlive (value);
 			}
 		}
 	}
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1-NRT/WriteClass.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1-NRT/WriteClass.txt
@@ -162,6 +162,7 @@ public partial class MyClass  {
 				_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 			} finally {
 				JNIEnv.DeleteLocalRef (native_value);
+				global::System.GC.KeepAlive (value);
 			}
 		}
 	}
@@ -260,6 +261,7 @@ public partial class MyClass  {
 			return __rm;
 		} finally {
 			JNIEnv.DeleteLocalRef (native_key);
+			global::System.GC.KeepAlive (key);
 		}
 	}
 
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1-NRT/WriteClassMethods.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1-NRT/WriteClassMethods.txt
@@ -29,6 +29,7 @@ public virtual unsafe int GetCountForKey (string? key)
 		return __rm;
 	} finally {
 		JNIEnv.DeleteLocalRef (native_key);
+		global::System.GC.KeepAlive (key);
 	}
 }
 
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1-NRT/WriteClassProperties.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1-NRT/WriteClassProperties.txt
@@ -109,6 +109,7 @@ public virtual unsafe string? Key {
 			_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 		} finally {
 			JNIEnv.DeleteLocalRef (native_value);
+			global::System.GC.KeepAlive (value);
 		}
 	}
 }
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1/WriteClass.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1/WriteClass.txt
@@ -162,6 +162,7 @@ public partial class MyClass  {
 				_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 			} finally {
 				JNIEnv.DeleteLocalRef (native_value);
+				global::System.GC.KeepAlive (value);
 			}
 		}
 	}
@@ -260,6 +261,7 @@ public partial class MyClass  {
 			return __rm;
 		} finally {
 			JNIEnv.DeleteLocalRef (native_key);
+			global::System.GC.KeepAlive (key);
 		}
 	}
 
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1/WriteClassMethods.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1/WriteClassMethods.txt
@@ -29,6 +29,7 @@ public virtual unsafe int GetCountForKey (string key)
 		return __rm;
 	} finally {
 		JNIEnv.DeleteLocalRef (native_key);
+		global::System.GC.KeepAlive (key);
 	}
 }
 
diff --git a/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1/WriteClassProperties.txt b/tests/generator-Tests/Unit-Tests/CodeGeneratorExpectedResults/XAJavaInterop1/WriteClassProperties.txt
@@ -109,6 +109,7 @@ public virtual unsafe string Key {
 			_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 		} finally {
 			JNIEnv.DeleteLocalRef (native_value);
+			global::System.GC.KeepAlive (value);
 		}
 	}
 }
diff --git a/tests/generator-Tests/expected.ji/Adapters/Xamarin.Test.AbsSpinner.cs b/tests/generator-Tests/expected.ji/Adapters/Xamarin.Test.AbsSpinner.cs
@@ -83,6 +83,7 @@ static void n_SetAdapter_Lxamarin_test_SpinnerAdapter_ (IntPtr jnienv, IntPtr na
 					__args [0] = new JniArgumentValue ((value == null) ? IntPtr.Zero : ((global::Java.Lang.Object) value).Handle);
 					_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 				} finally {
+					global::System.GC.KeepAlive (value);
 				}
 			}
 		}
@@ -126,6 +127,7 @@ public AbsSpinnerInvoker (IntPtr handle, JniHandleOwnership transfer) : base (ha
 					_members.InstanceMethods.InvokeAbstractVoidMethod (__id, this, __args);
 				} finally {
 					JNIEnv.DeleteLocalRef (native_value);
+					global::System.GC.KeepAlive (value);
 				}
 			}
 		}
diff --git a/tests/generator-Tests/expected.ji/Adapters/Xamarin.Test.AdapterView.cs b/tests/generator-Tests/expected.ji/Adapters/Xamarin.Test.AdapterView.cs
@@ -110,6 +110,7 @@ public AdapterViewInvoker (IntPtr handle, JniHandleOwnership transfer) : base (h
 					_members.InstanceMethods.InvokeAbstractVoidMethod (__id, this, __args);
 				} finally {
 					JNIEnv.DeleteLocalRef (native_value);
+					global::System.GC.KeepAlive (value);
 				}
 			}
 		}
diff --git a/tests/generator-Tests/expected.ji/CSharpKeywords/Xamarin.Test.CSharpKeywords.cs b/tests/generator-Tests/expected.ji/CSharpKeywords/Xamarin.Test.CSharpKeywords.cs
@@ -73,6 +73,7 @@ public static unsafe string UseThis (string this_)
 				return JNIEnv.GetString (__rm.Handle, JniHandleOwnership.TransferLocalRef);
 			} finally {
 				JNIEnv.DeleteLocalRef (native_this);
+				global::System.GC.KeepAlive (this_);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/Core_Jar2Xml/Android.Text.SpannableString.cs b/tests/generator-Tests/expected.ji/Core_Jar2Xml/Android.Text.SpannableString.cs
@@ -102,6 +102,7 @@ static int n_GetSpanFlags_Ljava_lang_Object_ (IntPtr jnienv, IntPtr native__this
 				var __rm = _members.InstanceMethods.InvokeVirtualInt32Method (__id, this, __args);
 				return (global::Android.Text.SpanTypes) __rm;
 			} finally {
+				global::System.GC.KeepAlive (what);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/Core_Jar2Xml/Android.Text.SpannableStringInternal.cs b/tests/generator-Tests/expected.ji/Core_Jar2Xml/Android.Text.SpannableStringInternal.cs
@@ -60,6 +60,7 @@ static int n_GetSpanFlags_Ljava_lang_Object_ (IntPtr jnienv, IntPtr native__this
 				var __rm = _members.InstanceMethods.InvokeVirtualInt32Method (__id, this, __args);
 				return (global::Android.Text.SpanTypes) __rm;
 			} finally {
+				global::System.GC.KeepAlive (p0);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/Core_Jar2Xml/Android.Views.View.cs b/tests/generator-Tests/expected.ji/Core_Jar2Xml/Android.Views.View.cs
@@ -176,6 +176,7 @@ public virtual unsafe void SetOnClickListener (global::Android.Views.View.IOnCli
 				__args [0] = new JniArgumentValue ((l == null) ? IntPtr.Zero : ((global::Java.Lang.Object) l).Handle);
 				_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 			} finally {
+				global::System.GC.KeepAlive (l);
 			}
 		}
 
@@ -206,6 +207,7 @@ public virtual unsafe void SetOn123Listener (global::Android.Views.View.IOnClick
 				__args [0] = new JniArgumentValue ((l == null) ? IntPtr.Zero : ((global::Java.Lang.Object) l).Handle);
 				_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 			} finally {
+				global::System.GC.KeepAlive (l);
 			}
 		}
 
@@ -238,6 +240,7 @@ public virtual unsafe void AddTouchables (global::System.Collections.Generic.ILi
 				_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 			} finally {
 				JNIEnv.DeleteLocalRef (native_views);
+				global::System.GC.KeepAlive (views);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/GenericArguments/Com.Google.Android.Exoplayer.Drm.FrameworkMediaDrm.cs b/tests/generator-Tests/expected.ji/GenericArguments/Com.Google.Android.Exoplayer.Drm.FrameworkMediaDrm.cs
@@ -58,6 +58,7 @@ public unsafe void SetOnEventListener (global::Com.Google.Android.Exoplayer.Drm.
 				__args [0] = new JniArgumentValue ((p0 == null) ? IntPtr.Zero : ((global::Java.Lang.Object) p0).Handle);
 				_members.InstanceMethods.InvokeAbstractVoidMethod (__id, this, __args);
 			} finally {
+				global::System.GC.KeepAlive (p0);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/NormalMethods/Xamarin.Test.SomeObject.cs b/tests/generator-Tests/expected.ji/NormalMethods/Xamarin.Test.SomeObject.cs
@@ -109,6 +109,8 @@ static int n_Handle_Ljava_lang_Object_Ljava_lang_Throwable_ (IntPtr jnienv, IntP
 				var __rm = _members.InstanceMethods.InvokeVirtualInt32Method (__id, this, __args);
 				return __rm;
 			} finally {
+				global::System.GC.KeepAlive (o);
+				global::System.GC.KeepAlive (t);
 			}
 		}
 
@@ -255,6 +257,8 @@ public virtual unsafe void VoidMethodWithParams (string astring, int anint, glob
 				_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 			} finally {
 				JNIEnv.DeleteLocalRef (native_astring);
+				global::System.GC.KeepAlive (astring);
+				global::System.GC.KeepAlive (anObject);
 			}
 		}
 
@@ -318,6 +322,7 @@ public virtual unsafe void ArrayListTest (global::System.Collections.Generic.ILi
 				_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 			} finally {
 				JNIEnv.DeleteLocalRef (native_p0);
+				global::System.GC.KeepAlive (p0);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/NormalProperties/Xamarin.Test.SomeObject.cs b/tests/generator-Tests/expected.ji/NormalProperties/Xamarin.Test.SomeObject.cs
@@ -210,6 +210,7 @@ public override unsafe int SomeInteger {
 					__args [0] = new JniArgumentValue ((value == null) ? IntPtr.Zero : ((global::Java.Lang.Object) value).Handle);
 					_members.InstanceMethods.InvokeAbstractVoidMethod (__id, this, __args);
 				} finally {
+					global::System.GC.KeepAlive (value);
 				}
 			}
 		}
@@ -236,6 +237,7 @@ public override unsafe string SomeString {
 					_members.InstanceMethods.InvokeAbstractVoidMethod (__id, this, __args);
 				} finally {
 					JNIEnv.DeleteLocalRef (native_value);
+					global::System.GC.KeepAlive (value);
 				}
 			}
 		}
diff --git a/tests/generator-Tests/expected.ji/ParameterXPath/Xamarin.Test.A.cs b/tests/generator-Tests/expected.ji/ParameterXPath/Xamarin.Test.A.cs
@@ -60,6 +60,7 @@ public virtual unsafe void SetA (global::Java.Lang.Object adapter)
 				_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 			} finally {
 				JNIEnv.DeleteLocalRef (native_adapter);
+				global::System.GC.KeepAlive (adapter);
 			}
 		}
 
@@ -92,6 +93,7 @@ public virtual unsafe void ListTest (global::System.Collections.Generic.IList<gl
 				_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 			} finally {
 				JNIEnv.DeleteLocalRef (native_p0);
+				global::System.GC.KeepAlive (p0);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/StaticProperties/Xamarin.Test.SomeObject.cs b/tests/generator-Tests/expected.ji/StaticProperties/Xamarin.Test.SomeObject.cs
@@ -76,6 +76,7 @@ public static unsafe string SomeString {
 					_members.StaticMethods.InvokeVoidMethod (__id, __args);
 				} finally {
 					JNIEnv.DeleteLocalRef (native_value);
+					global::System.GC.KeepAlive (value);
 				}
 			}
 		}
@@ -102,6 +103,7 @@ public static unsafe void SetSomeObject (global::Java.Lang.Object newvalue)
 				__args [0] = new JniArgumentValue ((newvalue == null) ? IntPtr.Zero : ((global::Java.Lang.Object) newvalue).Handle);
 				_members.StaticMethods.InvokeVoidMethod (__id, __args);
 			} finally {
+				global::System.GC.KeepAlive (newvalue);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/Streams/Java.IO.InputStream.cs b/tests/generator-Tests/expected.ji/Streams/Java.IO.InputStream.cs
@@ -216,6 +216,7 @@ public virtual unsafe int Read (byte[] buffer)
 					JNIEnv.CopyArray (native_buffer, buffer);
 					JNIEnv.DeleteLocalRef (native_buffer);
 				}
+				global::System.GC.KeepAlive (buffer);
 			}
 		}
 
@@ -257,6 +258,7 @@ public virtual unsafe int Read (byte[] buffer, int byteOffset, int byteCount)
 					JNIEnv.CopyArray (native_buffer, buffer);
 					JNIEnv.DeleteLocalRef (native_buffer);
 				}
+				global::System.GC.KeepAlive (buffer);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/Streams/Java.IO.OutputStream.cs b/tests/generator-Tests/expected.ji/Streams/Java.IO.OutputStream.cs
@@ -136,6 +136,7 @@ public virtual unsafe void Write (byte[] buffer)
 					JNIEnv.CopyArray (native_buffer, buffer);
 					JNIEnv.DeleteLocalRef (native_buffer);
 				}
+				global::System.GC.KeepAlive (buffer);
 			}
 		}
 
@@ -175,6 +176,7 @@ public virtual unsafe void Write (byte[] buffer, int offset, int count)
 					JNIEnv.CopyArray (native_buffer, buffer);
 					JNIEnv.DeleteLocalRef (native_buffer);
 				}
+				global::System.GC.KeepAlive (buffer);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/TestInterface/Test.ME.GenericImplementation.cs b/tests/generator-Tests/expected.ji/TestInterface/Test.ME.GenericImplementation.cs
@@ -82,6 +82,7 @@ public virtual unsafe void SetObject (byte[] value)
 					JNIEnv.CopyArray (native_value, value);
 					JNIEnv.DeleteLocalRef (native_value);
 				}
+				global::System.GC.KeepAlive (value);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/TestInterface/Test.ME.GenericObjectPropertyImplementation.cs b/tests/generator-Tests/expected.ji/TestInterface/Test.ME.GenericObjectPropertyImplementation.cs
@@ -101,6 +101,7 @@ static void n_SetObject_Ljava_lang_Object_ (IntPtr jnienv, IntPtr native__this,
 					__args [0] = new JniArgumentValue ((value == null) ? IntPtr.Zero : ((global::Java.Lang.Object) value).Handle);
 					_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 				} finally {
+					global::System.GC.KeepAlive (value);
 				}
 			}
 		}
diff --git a/tests/generator-Tests/expected.ji/TestInterface/Test.ME.GenericStringImplementation.cs b/tests/generator-Tests/expected.ji/TestInterface/Test.ME.GenericStringImplementation.cs
@@ -82,6 +82,7 @@ public virtual unsafe void SetObject (string[] value)
 					JNIEnv.CopyArray (native_value, value);
 					JNIEnv.DeleteLocalRef (native_value);
 				}
+				global::System.GC.KeepAlive (value);
 			}
 		}
 
diff --git a/tests/generator-Tests/expected.ji/TestInterface/Test.ME.GenericStringPropertyImplementation.cs b/tests/generator-Tests/expected.ji/TestInterface/Test.ME.GenericStringPropertyImplementation.cs
@@ -103,6 +103,7 @@ public virtual unsafe string Object {
 					_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);
 				} finally {
 					JNIEnv.DeleteLocalRef (native_value);
+					global::System.GC.KeepAlive (value);
 				}
 			}
 		}
diff --git a/tests/generator-Tests/expected.ji/TestInterface/Test.ME.TestInterfaceImplementation.cs b/tests/generator-Tests/expected.ji/TestInterface/Test.ME.TestInterfaceImplementation.cs
diff --git a/tests/generator-Tests/expected.ji/java.lang.Enum/Java.Lang.Enum.cs b/tests/generator-Tests/expected.ji/java.lang.Enum/Java.Lang.Enum.cs
diff --git a/tools/generator/Java.Interop.Tools.Generator.CodeGeneration/JavaInteropCodeGenerator.cs b/tools/generator/Java.Interop.Tools.Generator.CodeGeneration/JavaInteropCodeGenerator.cs

Original file line number	Diff line number	Diff line change
`@@ -162,6 +162,7 @@ public partial class MyClass {`
`162`	`162`	`_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);`
`163`	`163`	`} finally {`
`164`	`164`	`JNIEnv.DeleteLocalRef (native_value);`
	`165`	`+ global::System.GC.KeepAlive (value);`
`165`	`166`	`}`
`166`	`167`	`}`
`167`	`168`	`}`
`@@ -260,6 +261,7 @@ public partial class MyClass {`
`260`	`261`	`return __rm;`
`261`	`262`	`} finally {`
`262`	`263`	`JNIEnv.DeleteLocalRef (native_key);`
	`264`	`+ global::System.GC.KeepAlive (key);`
`263`	`265`	`}`
`264`	`266`	`}`
`265`	`267`
Original file line number	Diff line number	Diff line change
`@@ -29,6 +29,7 @@ public virtual unsafe int GetCountForKey (string key)`
`29`	`29`	`return __rm;`
`30`	`30`	`} finally {`
`31`	`31`	`JNIEnv.DeleteLocalRef (native_key);`
	`32`	`+ global::System.GC.KeepAlive (key);`
`32`	`33`	`}`
`33`	`34`	`}`
`34`	`35`
Original file line number	Diff line number	Diff line change
`@@ -109,6 +109,7 @@ public virtual unsafe string Key {`
`109`	`109`	`_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);`
`110`	`110`	`} finally {`
`111`	`111`	`JNIEnv.DeleteLocalRef (native_value);`
	`112`	`+ global::System.GC.KeepAlive (value);`
`112`	`113`	`}`
`113`	`114`	`}`
`114`	`115`	`}`
Original file line number	Diff line number	Diff line change
`@@ -27,6 +27,7 @@ public partial class MyClass {`
`27`	`27`	`JNIEnv.CopyArray (native_value, value);`
`28`	`28`	`JNIEnv.DeleteLocalRef (native_value);`
`29`	`29`	`}`
	`30`	`+ global::System.GC.KeepAlive (value);`
`30`	`31`	`}`
`31`	`32`	`}`
`32`	`33`
`@@ -46,6 +47,7 @@ public partial class MyClass {`
`46`	`47`	`JNIEnv.CopyArray (native_value, value);`
`47`	`48`	`JNIEnv.DeleteLocalRef (native_value);`
`48`	`49`	`}`
	`50`	`+ global::System.GC.KeepAlive (value);`
`49`	`51`	`}`
`50`	`52`	`}`
`51`	`53`
`@@ -65,6 +67,7 @@ public partial class MyClass {`
`65`	`67`	`JNIEnv.CopyArray (native_value, value);`
`66`	`68`	`JNIEnv.DeleteLocalRef (native_value);`
`67`	`69`	`}`
	`70`	`+ global::System.GC.KeepAlive (value);`
`68`	`71`	`}`
`69`	`72`	`}`
`70`	`73`
`@@ -84,6 +87,7 @@ public partial class MyClass {`
`84`	`87`	`JNIEnv.CopyArray (native_value, value);`
`85`	`88`	`JNIEnv.DeleteLocalRef (native_value);`
`86`	`89`	`}`
	`90`	`+ global::System.GC.KeepAlive (value);`
`87`	`91`	`}`
`88`	`92`	`}`
`89`	`93`
Original file line number	Diff line number	Diff line change
`@@ -36,6 +36,7 @@ public partial class MyClass {`
`36`	`36`	`JNIEnv.CopyArray (native_value, value);`
`37`	`37`	`JNIEnv.DeleteLocalRef (native_value);`
`38`	`38`	`}`
	`39`	`+ global::System.GC.KeepAlive (value);`
`39`	`40`	`}`
`40`	`41`	`}`
`41`	`42`	`}`
`@@ -65,6 +66,7 @@ public partial class MyClass {`
`65`	`66`	`JNIEnv.CopyArray (native_value, value);`
`66`	`67`	`JNIEnv.DeleteLocalRef (native_value);`
`67`	`68`	`}`
	`69`	`+ global::System.GC.KeepAlive (value);`
`68`	`70`	`}`
`69`	`71`	`}`
`70`	`72`	`}`
`@@ -94,6 +96,7 @@ public partial class MyClass {`
`94`	`96`	`JNIEnv.CopyArray (native_value, value);`
`95`	`97`	`JNIEnv.DeleteLocalRef (native_value);`
`96`	`98`	`}`
	`99`	`+ global::System.GC.KeepAlive (value);`
`97`	`100`	`}`
`98`	`101`	`}`
`99`	`102`	`}`
`@@ -123,6 +126,7 @@ public partial class MyClass {`
`123`	`126`	`JNIEnv.CopyArray (native_value, value);`
`124`	`127`	`JNIEnv.DeleteLocalRef (native_value);`
`125`	`128`	`}`
	`129`	`+ global::System.GC.KeepAlive (value);`
`126`	`130`	`}`
`127`	`131`	`}`
`128`	`132`	`}`
Original file line number	Diff line number	Diff line change
`@@ -103,6 +103,7 @@ public partial class MyClass {`
`103`	`103`	`__args [0] = new JniArgumentValue (value);`
`104`	`104`	`_members.InstanceMethods.InvokeAbstractVoidMethod (__id, this, __args);`
`105`	`105`	`} finally {`
	`106`	`+ global::System.GC.KeepAlive (value);`
`106`	`107`	`}`
`107`	`108`	`}`
`108`	`109`	`}`
Original file line number	Diff line number	Diff line change
`@@ -83,6 +83,7 @@ static void n_SetAdapter_Lxamarin_test_SpinnerAdapter_ (IntPtr jnienv, IntPtr na`
`83`	`83`	`__args [0] = new JniArgumentValue ((value == null) ? IntPtr.Zero : ((global::Java.Lang.Object) value).Handle);`
`84`	`84`	`_members.InstanceMethods.InvokeVirtualVoidMethod (__id, this, __args);`
`85`	`85`	`} finally {`
	`86`	`+ global::System.GC.KeepAlive (value);`
`86`	`87`	`}`
`87`	`88`	`}`
`88`	`89`	`}`
`@@ -126,6 +127,7 @@ public AbsSpinnerInvoker (IntPtr handle, JniHandleOwnership transfer) : base (ha`
`126`	`127`	`_members.InstanceMethods.InvokeAbstractVoidMethod (__id, this, __args);`
`127`	`128`	`} finally {`
`128`	`129`	`JNIEnv.DeleteLocalRef (native_value);`
	`130`	`+ global::System.GC.KeepAlive (value);`
`129`	`131`	`}`
`130`	`132`	`}`
`131`	`133`	`}`
Original file line number	Diff line number	Diff line change
`@@ -110,6 +110,7 @@ public AdapterViewInvoker (IntPtr handle, JniHandleOwnership transfer) : base (h`
`110`	`110`	`_members.InstanceMethods.InvokeAbstractVoidMethod (__id, this, __args);`
`111`	`111`	`} finally {`
`112`	`112`	`JNIEnv.DeleteLocalRef (native_value);`
	`113`	`+ global::System.GC.KeepAlive (value);`
`113`	`114`	`}`
`114`	`115`	`}`
`115`	`116`	`}`
Original file line number	Diff line number	Diff line change
`@@ -73,6 +73,7 @@ public static unsafe string UseThis (string this_)`
`73`	`73`	`return JNIEnv.GetString (__rm.Handle, JniHandleOwnership.TransferLocalRef);`
`74`	`74`	`} finally {`
`75`	`75`	`JNIEnv.DeleteLocalRef (native_this);`
	`76`	`+ global::System.GC.KeepAlive (this_);`
`76`	`77`	`}`
`77`	`78`	`}`
`78`	`79`
Original file line number	Diff line number	Diff line change
`@@ -102,6 +102,7 @@ static int n_GetSpanFlags_Ljava_lang_Object_ (IntPtr jnienv, IntPtr native__this`
`102`	`102`	`var __rm = _members.InstanceMethods.InvokeVirtualInt32Method (__id, this, __args);`
`103`	`103`	`return (global::Android.Text.SpanTypes) __rm;`
`104`	`104`	`} finally {`
	`105`	`+ global::System.GC.KeepAlive (what);`
`105`	`106`	`}`
`106`	`107`	`}`
`107`	`108`