https://issues.dlang.org/show_bug.cgi?id=16107
--- Comment #1 from b2.t...@gmx.com ---
definition of Foo can be reduced to
class Foo
{
alias TreeItemType = typeof(this);
TreeItemSiblings!TreeItemType _siblings; // remove this decl
TreeItemChildren!TreeItemType _children; // or this one : OK
}
The content was initially a mixin template, which explains why it was
incoherant...anyway still the ICE.
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