[Issue 19091] __traits(compiles) and error in templated structs leads to missing symbol

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19091

--- Comment #5 from FeepingCreature <default_357-line at yahoo.de> ---
https://issues.dlang.org/show_bug.cgi?id=21235 might be the same bug? I don't
know.

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