[Issue 19119] App crashes with strange behavior of ctors/dtors from CPP

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=19119

--- Comment #12 from kinke at gmx.net ---
Something very similar is apparently already done for GC-allocated structs - if
they have a destructor, the TypeInfo pointer is stored right after the actual
instance, and a specially marked GC block is requested; see
rt.lifetime._d_newitemU().

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