Jonathan, Filing a GitHub issue in the Mono repo is best way to report/track this.
I found a similar sounding issue, but perhaps it's different: https://github.com/mono/mono/issues/7696 Thanks, Jonathan On Wed, Mar 21, 2018 at 7:11 PM, Jonathan Mitchell <li...@mugginsoft.com> wrote: > On Mono 5.4.1 > > The following Distinct() method calls succeeds on .Net but raises with a > Null ref exception on Mono macOS 10.13 > . > var orders = items.SelectMany(e => e.Deductions).Select(e => > e.Order).Distinct(); > foreach (var order in orders) { > … // order is Null here and raises > } > > > On Mono `order` is Null though `orders` is an instance of > System.Linq.Enumerable.DistinctIterator<T>. > In the local vars browser `orders` IEnumerator is Null. > > I know I am a bit behind the curve in using 5.4.1 but the Reference source > for System.Linq.Enumerable,cs doesn’t seem to have changed much. > I thought the use of the reference source would have nuked this sort of > divergence? > Or maybe I am just being a bit stupid... > > Thanks > > Jonathan > > > _______________________________________________ > Mono-devel-list mailing list > Mono-devel-list@lists.dot.net > http://lists.dot.net/mailman/listinfo/mono-devel-list >
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