An attempt was made to prevent occurrence of the access violation exception in the CallFunction method

Author: Taritsyn

NuGet/MsieJavaScriptEngine.nuspec

@@ -12,7 +12,7 @@
 		<requireLicenseAcceptance>false</requireLicenseAcceptance>
 		<description>This library is a .NET wrapper for working with the JavaScript engines of Internet Explorer and Edge (JsRT versions of Chakra, ActiveScript version of Chakra and Classic JavaScript Engine). Project was based on the code of SassAndCoffee.JavaScript (http://github.com/paulcbetts/SassAndCoffee) and Chakra Sample Hosts (http://github.com/panopticoncentral/chakra-host).</description>
 		<summary>This library is a .NET wrapper for working with the JavaScript engines of Internet Explorer and Edge (JsRT versions of Chakra, ActiveScript version of Chakra and Classic JavaScript Engine).</summary>
-		<releaseNotes>JSON2 library was updated to version of May 10, 2016.</releaseNotes>
+		<releaseNotes>An attempt was made to prevent occurrence of the access violation exception in the `CallFunction` method.</releaseNotes>
 		<copyright>Copyright (c) 2012-2016 Andrey Taritsyn - http://www.taritsyn.ru</copyright>
 		<language>en-US</language>
 		<tags>JavaScript ECMAScript MSIE IE Edge Chakra</tags>

NuGet/readme.txt

@@ -21,7 +21,8 @@
    =============
    RELEASE NOTES
    =============
-   JSON2 library was updated to version of May 10, 2016.
+   An attempt was made to prevent occurrence of the access violation
+   exception in the `CallFunction` method.
 
    ============
    PROJECT SITE

src/MsieJavaScriptEngine/JsRt/Edge/ChakraEdgeJsRtJsEngine.cs

@@ -424,12 +424,16 @@ public override object CallFunction(string functionName, params object[] args)
 						string.Format(Strings.Runtime_FunctionNotExist, functionName));
 				}
 
-				var processedArgs = MapToScriptType(args);
-				var allProcessedArgs = new[] { globalObj }.Concat(processedArgs).ToArray();
-
+				EdgeJsValue[] processedArgs = MapToScriptType(args);
 				EdgeJsValue functionValue = globalObj.GetProperty(functionId);
+
+				globalObj.AddRef();
+
+				EdgeJsValue[] allProcessedArgs = new[] { globalObj }.Concat(processedArgs).ToArray();
 				EdgeJsValue resultValue = functionValue.CallFunction(allProcessedArgs);
 
+				globalObj.Release();
+
 				return MapToHostType(resultValue);
 			});
 

src/MsieJavaScriptEngine/JsRt/Ie/ChakraIeJsRtJsEngine.cs

@@ -460,12 +460,16 @@ public override object CallFunction(string functionName, params object[] args)
 						string.Format(Strings.Runtime_FunctionNotExist, functionName));
 				}
 
-				var processedArgs = MapToScriptType(args);
-				var allProcessedArgs = new[] { globalObj }.Concat(processedArgs).ToArray();
-
+				IeJsValue[] processedArgs = MapToScriptType(args);
 				IeJsValue functionValue = globalObj.GetProperty(functionId);
+
+				globalObj.AddRef();
+
+				IeJsValue[] allProcessedArgs = new[] { globalObj }.Concat(processedArgs).ToArray();
 				IeJsValue resultValue = functionValue.CallFunction(allProcessedArgs);
 
+				globalObj.Release();
+
 				return MapToHostType(resultValue);
 			});
 

src/MsieJavaScriptEngine/Properties/AssemblyInfo.cs

@@ -13,7 +13,7 @@
 [assembly: ComVisible(false)]
 [assembly: Guid("ae6911c9-e2a9-4386-ab90-3722a9166564")]
 
-[assembly: AssemblyVersion("1.7.1.0")]
-[assembly: AssemblyFileVersion("1.7.1.0")]
+[assembly: AssemblyVersion("1.7.2.0")]
+[assembly: AssemblyFileVersion("1.7.2.0")]
 
 [module: DefaultCharSet(CharSet.Unicode)]