ConfigurationProviders leak memory

using System;
using System.Threading.Tasks;
using Microsoft.Extensions.Configuration;

namespace WebApplication45
{
    public class Program
    {
        public static async Task Main(string[] args)
        {
            Console.WriteLine("STARTING");
            Console.ReadLine();
            CreateConfig();
            Console.WriteLine("DONE");
            Console.ReadLine();
        }

        private static void CreateConfig()
        {
            for (int i = 0; i < 1000; i++)
            {
                var config = new ConfigurationBuilder()
                               .SetBasePath(Environment.CurrentDirectory)
                               .AddJsonFile("appsettings.json", optional: false, reloadOnChange: true)
                               .Build();
            }
        }
    }
}

This roots tons of objects because of https://github.com/aspnet/Extensions/issues/786 they can’t be cleaned up.

[davidfowl]

@poke We actually need it in 2 places. It needs to go into the generic host (that’s the default in 3.0) and in the WebHost for compat.

[poke]

@davidfowl We still need the work on the AspNetCore side though. I’m working on that (currently struggling with getting the repo to build).