.NET Core - how to catch a StackOverflowException

Question

The perfect StackOverflow question has finally come....

How do I catch a StackOverflow exception!

It seems in .NET Core the StackOverflowException isn't available:

And if I run this code:

using System;

namespace PlayGround.Core.Console
{
    public class Program
    {
        public static void Main(string[] args)
        {
            try
            {
                DoSomething();
            }
            catch(Exception e)
            {
                System.Console.WriteLine("Bugger");
            }

        }

        private static void DoSomething()
        {
            DoSomething();
        }
    }
}

I get this:

You can see my exception handler didn't run. So how do I go about catching this exception in .NET Core?

EDIT September 15th, 2017: In .NET Core 2.0 there is now a StackOverflowException class, but it still doesn't actually catch a stackoverflow exception.

See http://stackoverflow.com/questions/1599219/c-sharp-catch-a-stack-overflow-exception/1599238#1599238 for a discussion of why it is not catchable — John Davidson
– John Davidson, Commented Sep 15, 2016 at 13:52
@Technetium, not a duplicate because in .NET it is possible to catch these exceptions and the class itself is accessible to use in a try/catch. .NET Core is a different animal all together. — joshcomley
– joshcomley, Commented Sep 19, 2016 at 13:52
Indeed, you are correct @joshcomley. This is strange. You can see it in the source code next to everything else under System. github.com/dotnet/corefx/blob/master/src/mscorlib/ref/Compat/… — Technetium
– Technetium, Commented Sep 19, 2016 at 15:25
@LexLi good idea, have now done so: github.com/dotnet/coreclr/issues/14010 — joshcomley
– joshcomley, Commented Sep 15, 2017 at 12:29

Zoxive · Accepted Answer · 2018-08-02 14:30:11Z

2

Since CLR 2.0 you cant catch a StackOverflowException. Unless you were the one to throw it it.

https://blogs.msdn.microsoft.com/jaredpar/2008/10/22/when-can-you-catch-a-stackoverflowexception/

answered Aug 2, 2018 at 14:30

Zoxive

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2 Comments

quetzalcoatl Over a year ago

The Gods Must Be Crazy

XouDo Over a year ago

It's a pity so you can't know where in your code the exception happened. In the case of a big application, it's a problem.

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