[Issue 16527] extern( C++ ) Win64 build - return struct by value is broken

[via Digitalmars-d-bugs]

https://issues.dlang.org/show_bug.cgi?id=16527

--- Comment #1 from ki...@gmx.net ---
We have a special case for this in LDC. MSVC passes `this` before `sret`,
unlike most other ABIs.

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