ContainerBlock CopyTo IndexOutOfRangeException

[ladeak]

When I call ToList() on a ContainerBlock (ListItemBlock) with a single item in it, I get a IndexOutOfRangeException.

Stacktrace:

   at System.Runtime.CompilerServices.CastHelpers.StelemRef(Array array, Int32 index, Object obj)
   at Markdig.Syntax.ContainerBlock.CopyTo(Block[] array, Int32 arrayIndex)
   at System.Collections.Generic.List`1..ctor(IEnumerable`1 collection)
   at System.Linq.Enumerable.ToList[TSource](IEnumerable`1 source)

This seems to be a regression since v28.1. I am still further looking into the detailts.

(.NET6, Blazor app)

[MihaZupan]

Caused by a typo here:

markdig/src/Markdig/Syntax/ContainerBlock.cs

Line 133 in a4a1a17

array[arrayIndex + 1] = children[i].Block;

Should be arrayIndex + i instead of arrayIndex + 1.

As a temporary workaround, you can avoid the CopyTo.

var list = new List<Block>(container.Count);
for (int i = 0; i < list.Count; i++)
    list[i] = container[i];

[ladeak]

I was wondering why I did not find this piece of code... GitHub search has taken me to a different version of the file. 😡

It seems calling ToList() on MarkdownDocument results a weird list of, probably also caused by the same typo.