[Issue 21228] Templated toString silently ignored when it can't be instantiated

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=21228

Joseph Rushton Wakeling <joseph.wakeling at webdrake.net> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|Templated toString silently |Templated toString silently
                   |ignored when it cant be     |ignored when it can't be
                   |instantiated                |instantiated

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