[Issue 19179] extern(C++) small-struct by-val uses wrong ABI

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19179

Walter Bright <bugzilla at digitalmars.com> changed:

           What    |Removed                     |Added
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             Status|REOPENED                    |RESOLVED
         Resolution|---                         |INVALID

--- Comment #7 from Walter Bright <bugzilla at digitalmars.com> ---
Default initialization in C++ doesn't make it non-POD. And I added the
`extern(C++)` to the test cases that Manu had omitted.

Is the actual problem trying to create a non-POD struct in D that is compatible
with a non-POD struct in C++?

As to how to make a POD in D without a default constructor, just add a trivial
postblit:

    this(this) { }

and it will be not POD.

If there's still a problem, please file a new report explaining what that is
rather than reopening this as a different issue.

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