Re: operator class&() { return *this; } considered harmful?
Michael Norrish ha scritto:
Clearly, the rvalue reference proposal solves all sorts of other
interesting issues apart from the one in my example, but my question
is really whether or not
operator C&() { return *this; }
will safely achieve what I want.
I don't think so. According to my interpretation, 12.2/5 doesn't apply
here, because in line:
C &x = f();
the reference x is *not* bound to a temporary, but rather to the result
of the call to operator C& which is a reference (such reference
*happens* to be bound to a temporary but this fact is irrelevant to a
strict interpretation of 12.2/5).
I expect the temporary to be properly destroyed at the end of the
full-expression, making x a dangling reference.
Just my opinion,
Ganesh
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