Re: reference to non-const temporary

Greg Herlihy wrote:


Thanks -- so g++ 4.01 is wrong in this case.

I'm curious -- why aren't temporaries allowed to be passed as non-const
references? It seems slightly arbitrary, since non-const methods can be
called on them anyway. Surely such temporaries are fully constructed
objects. What's the rationale? It seems the restriction is trivially
circumvented using operator=():

struct Foo {};

Foo make() { return Foo(); }

void use(Foo& foo) { }

int main()
{
     use(make()); // Fails, as discussed above
     use(Foo() = make()); // Compiles
}

Thanks,
Ethan

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