[Issue 20695] Copy constructor disable default struct constructor

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20695

Mathias LANG <pro.mathias.lang at gmail.com> changed:

           What    |Removed                     |Added
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           Hardware|x86                         |All
                 OS|Mac OS X                    |All
           Severity|enhancement                 |normal

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