[Issue 4231] Solitary opUnary Postincrement and Postdecrement user defined operators are broken.

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=4231



--- Comment #5 from Andrei Alexandrescu <andrei at metalanguage.com> 2010-06-02 08:57:50 PDT ---
That looks like a very specialized optimization to me. In particular, if the
postblit has side effects, the optimizer must have advanced knowledge in order
to elide it. This is a path that C++ has taken with copy constructor elision,
and it's not a path we should take.

I think the language definition should clarify that postincrement and
postdecrement are lowered into their pre- counterparts if the result is not
taken.

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