[Issue 23082] stringof of template alias overloaded with function accessed by trait: segfault.

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=23082

--- Comment #1 from FeepingCreature <default_357-line at yahoo.de> ---
Further reduced:

...
    __traits(parent, main).bar.stringof;
...

Afaics at first glance, the problem is that mod.bar forms a DotIdExp, but
doesn't have a type.

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