[Issue 20641] [shared] static [~]this in templates get run multiple time when compiled separately

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=20641

--- Comment #1 from Mathias LANG <pro.mathias.lang at gmail.com> ---
For anyone willing to tackle this problem, it might be worth looking into what
C++ is doing: http://itanium-cxx-abi.github.io/cxx-abi/abi.html#once-ctor

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