I upgrade my lib to ARC and run as static lib in another non-arc project. I getting a EXC_BAD_ACCES and the debugger stop on CLASSNAME.cxx_destruct.
Is this a kind of new issue with ARC or is the same problems with EXC_BAD_ACCES (a nil reference?)
I'm confused because I stop in this method:
- (void)dealloc
{
[self closeDb];
}
And work fine.
Related
I have a sample solution with a console and library project. Both reference the same nuget but a different version. The console project also has a reference to the library project. So the structure is like this:
- Solution
- ConsoleApp
- Project Reference: Library
- Nuget: NServiceBus.RabbitMQ (5.2.0)
- Library
- Nuget: NServiceBus.RabbitMQ (6.0.0)
You can find the solution here.
Since Nuget uses the nearest wins rule, the nuget package that gets resolved is version 5.2.0. This is what I want, so far so good. But when I run the application and run a method of the Library I get the following exception:
Could not load file or assembly 'NServiceBus.Transport.RabbitMQ, Version=6.0.0.0, Culture=neutral, PublicKeyToken=9fc386479f8a226c'. The located assembly's manifest definition does not match the assembly reference. (0x80131040)
In .NET Framework I would solve this with an assembly redirect. But that isn't available in .Net Core. I always thought that .Net Core solves this automatically by using the deps.json file. There I see the following statement:
"Library/1.0.0": {
"dependencies": {
"NServiceBus.RabbitMQ": "5.2.0"
},
"runtime": {
"Library.dll": {}
}
}
But still at runtime he tries to resolve the 6.0.0 version. I'm using the latest .Dot Net 3.1.X SDK.
I'm I doing something wrong or does this seem like a bug?
For the record, this is a simple sample project. The actual situation where I need this is much more complex. I also do understand that doing this can cause runtime exceptions while running the application.
It appears to be by design.
A little bit of searching, I found this: https://github.com/dotnet/fsharp/issues/3408#issuecomment-319466999
The coreclr will load an assembly of the version or higher than the reference. If the assembly discovered is lower than the reference then it fails.
Also this: https://github.com/dotnet/sdk/issues/384#issuecomment-260457776
downgrading the assembly version isn't supported on .NET Core
So, to confirm, I spent much more time than I intended looking/searching through https://github.com/dotnet/runtime. Eventually I found the assembly version compatibility method: https://github.com/dotnet/runtime/blob/172059af6623d04fa0468ec286ab2c240409abe3/src/coreclr/binder/assemblybindercommon.cpp#L49-L53
It checks all the components of the version separately, but if we look at just one, we can see what it's doing:
if (!pFoundVersion->HasMajor() || pRequestedVersion->GetMajor() > pFoundVersion->GetMajor())
{
// - A specific requested version component does not match an unspecified value for the same component in
// the found version, regardless of lesser-order version components
// - Or, the requested version is greater than the found version
return false;
}
As the comment says, the loader will reject the assembly if the assembly's version is lower than the requested version. In your case, assuming that the assembly version matches the package version (which it doesn't have to), your library is requesting version 6.0.0, but the assembly loader/binder, found version 5.2.0 on disk, which is lower. Hence, it rejects that dll, keeps looking, but then can't find a suitable version of the assembly on the probing path and eventually throws the FileLoadException.
What's not clear to me is if this assembly compatibility is checked only on the default assembly loader, or even if you add your own event handler to AssemblyLoadContext.Default.Resolving. You could try adding your own handler and when it requests the assembly of the higher version, you return the lower version assembly anyway. It might be a way to work around the issue.
This problem is specific to RazorLight.
Error:
Can't load metadata reference from the entry assembly. Make sure
PreserveCompilationContext is set to true in *.csproj file
This error pops up only after we deploy to AWS. On the local machine things work fine. I've already added PreserveCompilationContext to the *.csproj file.
<PropertyGroup>
<TargetFramework>netcoreapp2.1</TargetFramework>
<PreserveCompilationContext>true</PreserveCompilationContext>
</PropertyGroup>
We use circleci for deployments. The API that's having this problem is hosted in AWS Lambda.
private async Task<string> GenerateText(string template, ProseModel model)
{
var engine = new RazorLightEngineBuilder()
.UseMemoryCachingProvider()
.Build();
try
{
// ERROR thrown on next line
var result = await engine.CompileRenderAsync(Guid.NewGuid().ToString(), template, model);
return result;
}
catch(Exception e)
{
Logger.LogError("Error generating template", e);
throw e;
}
}
I found that people are getting this same error in Azure Functions. Is that similar to Lambda's and maybe requires a similar fix? If yes, how can I fix this in a Lambda?
I've also tried to set SetOperatingAssembly(Assembly. GetExecutingAssembly())
I ran into the same issue but the fix that you posted for the Azure Function hack worked for me. You must make sure to replace the "RazorLight" package with the "RazorLight.Unofficial" package version beta1.3. Then it should work.
The problem is that the entry assembly when running on Lambda is called:
Bootstrap, Version=0.0.0.0, Culture=neutral, PublicKeyToken=null
Which I'm assuming isn't compiled to preserve the compilation context.
I couldn't find anything that explains this -- for some reason my .NET Core 2.0 ASP.NET application does not run as a DLL via:
dotnet MyProject.Web.dll
And instead I get the exception:
Unhandled Exception: System.MissingMethodException: Entry point not found in assembly 'MyProject.Web, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'.
namespace MyProject.Web
{
public class Program
{
public static void Main(string[] args)
{
LoadDependencies();
var host = new WebHostBuilder()
.UseKestrel()
.UseContentRoot(Directory.GetCurrentDirectory())
.UseIISIntegration()
.UseStartup<Startup>()
.Build();
host.Run();
}
private static void LoadDependencies()
{
DependencyLocator.Instance.DefineIfUndefined<IDataProvider, DataProvider>();
}
}
}
It runs fine as a standalone executable (when targeting a "Console Application" in the project's config), but now that I'm trying to deploy to a server that needs it to run via the dotnet command (as a DLL, i.e. "dotnet .\MyProject.Web.dll"), it seems to be having issues. I get the above exception on both my server and my local development box.
I'm kind of blown away that it cannot locate the Main method -- it's declared as static and in Program.cs. Am I missing something?
(EDIT: To clarify, the DLL I'm trying to run against the "dotnet" command is from the target compiling as a "Console Library," since my server is explicitly asking for a DLL, since they will not run executables).
OK, so this is annoying and will hopefully help someone else out.
My host wants to specifically run DLL's thru .NET Core ONLY. They do not allow for executables to be run.
Because DLL's are frequently built as "Class Library" output types on the project, I assumed that this was the workflow necessary to build it. However, I found out that whenever you build your project as a "Console Application," it builds a DLL in addition to an EXE. So, in the above example, MyProject.Web.exe and MyProject.Web.dll are both built when the output type is "Console Application."
MyProject.Web.dll that comes from "Console Application" is different than MyProject.Web.Dll that comes from "Class Library." The one that comes from "Class Library" will NOT have an entry point that can be discovered on it, which will lead to the problem above.
So, if you're getting this error, look for the DLL that ships with your EXE of the same name -- that's the actual DLL you'll want to run in your dotnet console (i.e. dotnet MyProject.Web.dll)
After building and successfully running a self-hosted NancyFx application on windows with visual studio I went on and tried to run the application on linux with mono. I was able to build the solution (using xbuild) but when running the app I get a strange error:
Unhandled Exception:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. --->
System.TypeLoadException: Could not load type 'System.Net.HttpListener'
from assembly 'System, Version=4.0.0.0, Culture=neutral,
PublicKeyToken=b77a5c561934e089'.
at Microsoft.Owin.Host.HttpListener.OwinServerFactory.Initialize (IDictionary`2 properties) <0x413ae4f0 + 0x000eb> in <filename unknown>:0
For some reason, the app tries to initialize class HttpListener from the System assembly, but HttpListener lives in System.Netassembly. I looked in the GAC folder and found that System.Net is there as expected. I moved a copy to the bin folder where the other dependencies of the app live but that didn't solve the problem. Any help would be appreciated!!
here is my OWIN-related code:
// Startup.cs
using Owin;
namespace MyApp
{
public class Startup
{
public void Configuration(IAppBuilder app)
{
app.UseNancy();
}
}
}
// Program.cs
using System;
using Microsoft.Owin.Hosting;
namespace MyApp
{
public class Program
{
static void Main(string[] args)
{
var url = "http://127.0.0.1:8080/";
using (WebApp.Start<Startup>(url))
{
Console.WriteLine("Running on {0}", url);
Console.WriteLine("Press enter to exit");
Console.ReadLine();
}
}
}
}
Yep, wrong assembly indeed.
Im not sure why yet, but I'm having the same issue with CENTOS only using mono 4.3.178. Debian Jesse using version 4.2.x had no issues. Several other Debian Jesse boxes I use to test seem to have no issues with 4.3.x. In my case I'm listening on an alternate port.
RedHat Strikes Again :/
A MUCH deeper stack trace into the IL seems to indicate that gcc on the machine you built mono on, and also the build essentials package have some extremely dated libs and even the compiler. I was surprised to see the number of warnings, nearly 70,000 as opposed to a typical 400 depending on the diversity of libs you have. I have about 10 hours to figure this out, so hopefully its not too bad.
I'm attempting to minify my .JSX files with ASP.NET Minification and Optimization via System.Web.Optimization.React. I've installed the MVC4 React Package as well as the Optimization package, but whenever I try to include a bundle I get the following:
React.TinyIoC.TinyIoCResolutionException: Unable to resolve type: React.IReactEnvironment
The InnerException is always null
My bundles are setup as follows:
bundles.Add(new ScriptBundle("~/Bundle/Scripts/ReactJS").Include(
"~/Scripts/React/react-0.12.2.js",
"~/Scripts/React/react-with-addons-0.12.2.js",
"~/Scripts/React/JSXTransformer-0.12.2.js"
));
bundles.Add(new JsxBundle("~/Bundle/Scripts/ReactCalendar").Include(
"~/Scripts/React/Calendar/Main.react.jsx",
"~/Scripts/React/Calendar/Components/Calendar.react.jsx",
"~/Scripts/React/Calendar/Components/CalendarEvent.react.jsx",
"~/Scripts/React/Calendar/Components/CalendarControls.react.jsx",
"~/Scripts/React/Calendar/Components/CalendarTimeSlots.react.jsx"
));
And included in the view as:
#section scripts{
#Scripts.Render("~/Bundle/Scripts/ReactJS");
#Scripts.Render("~/Bundle/Scripts/ReactCalendar");
}
The error is always thrown on line:
#Scripts.Render("~/Bundle/Scripts/ReactCalendar");
Anyone got any ideas on how to solve / debug this one? Let me know if more info is needed.
I'm not sure if this is the same issue I was facing, but I googled the exact same error, found this SO topic as the first hit, with no definitive answer, so I thought I'd offer my solution.
I'm using .NET 4.5 in an MVC app, and React.Web.Mvc4 v3.0.0.
I managed to work around this issue with the help of this comment on Github.
Here's my entire ReactConfig.cs:
using React;
using React.TinyIoC;
using React.Web.TinyIoC;
namespace NS.Project
{
public static class ReactConfig
{
public static void Configure()
{
Initializer.Initialize(AsPerRequestSingleton);
ReactSiteConfiguration.Configuration
.SetLoadBabel(false)
.AddScriptWithoutTransform("~/React/dist/server.bundle.js");
}
private static TinyIoCContainer.RegisterOptions AsPerRequestSingleton(
TinyIoCContainer.RegisterOptions registerOptions)
{
return TinyIoCContainer.RegisterOptions.ToCustomLifetimeManager(
registerOptions,
new HttpContextLifetimeProvider(),
"per request singleton"
);
}
}
}
Then, I'm callingReactConfig.Configure explicitly from Application_Start.
"Unable to resolve type: React.IReactEnvironment" with no InnerException generally means ReactJS.NET is not initialising properly for some reason. In web apps, ReactJS.NET handles initialisation through the use of WebActivator. Make sure your project is referencing React.Web, React.Web.Mvc4 and WebActivatorEx, and all the corresponding .dll files are ending up in your app's bin directory.
Also, you do not need to (and should not) include JSXTransformer in your JavaScript bundles, as ReactJS.NET does all the JSX compilation server-side.
Something looks like changed from React.Web.MVc4 version 4.0.0. versions before didnt have that problem.
as stated here
Install the React.Web.Mvc4 package through NuGet. You will also need to install a JS engine to use (either V8 or ChakraCore are recommended). See the JSEngineSwitcher docs for more information.
To use V8, add the following packages:
JavaScriptEngineSwitcher.V8
JavaScriptEngineSwitcher.V8.Native.win-x64
ReactConfig.cs will be automatically generated for you. Update it to register a JS engine and your JSX files:
using JavaScriptEngineSwitcher.Core;
using JavaScriptEngineSwitcher.V8;
[assembly: WebActivatorEx.PreApplicationStartMethod(typeof(React.Sample.Mvc4.ReactConfig), "Configure")]
namespace React.Sample.Mvc4
{
public static class ReactConfig
{
public static void Configure()
{
ReactSiteConfiguration.Configuration
.AddScript("~/Content/Sample.jsx");
JsEngineSwitcher.Current.DefaultEngineName = V8JsEngine.EngineName;
JsEngineSwitcher.Current.EngineFactories.AddV8();
}
}
}
If anyone needs this, just install this nuget and it will resolve this issue.
System.Web.Optimization.React