[Issue 23646] A nastier forward reference bug

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23646

--- Comment #1 from Max Samukha <maxsamukha at gmail.com> ---
Further reduced:

alias aliases(a...) = a;

alias Components = Dependencies!();

template Dependencies()
{
    alias Dependencies = aliases!(Top.DirectDependencies);
    // alias Dependencies = Top.DirectDependencies; // but this succeeds
}

struct Top
{
    alias DirectDependencies = aliases!();
    enum l = Components.length;
}

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