Andrew Haley writes:
> Christian Fröbel writes:
> > Hi there,
> >
> > Christian Fröbel wrote:
> > > I'm having problems with a non-const copy constructor.
> >
> > I'd like to correct myself. This problem dosn't seem to be related to the copy
> > constructor at all. The problem is that I'm not allowed to make a non-const
> > reference to a temporary object. For example code like this doesn't compile:
> >
> > class C {};
> >
> > void foo (C& c) {}
> >
> > int main (void)
> > {
> > foo (C()); // <== problem
> > return 0;
> > }
> >
> > The error message I get here is:
> > conversion.cpp:48: error: invalid initialization of non-const reference of
> > type øC&ù from a temporary of type øCù
> > conversion.cpp:42: error: in passing argument 1 of øvoid foo(C&)ù
> >
> > I read §5.5 in Stroustrup's C++ Programming Language regadring that topic but
> > couldn't find anything of real use there.
>
> I can. "The initializer of a const T& need not be an lvalue..." In
> other words, although he doesn't explicitly say so, the initializer of
> a const T& has to be an lvalue.
Sorry, a non-const T&.
Andrew.
