Re: Life time of an object and Reference Var

maverick wrote:

  > Sorry for not defining g(). But let me do it as follows:

  > foo& g()
  > {
  > foo local;
  > return local;
  > }

As has already been pointed out, this will result in undefined
behavior as soon as you use the reference you return. Most
compilers will warn you.

  > and lets also add a member var to class Foo say i of int type--
  > class Foo
  > {

  > int i;
  > Foo ( int j = 0 ) : i(j){}

  > };

  > now let say,
  > int main()
  > {
  > Foo& ref = g();
  > ref.i = 10; //?????CORE???
  > }

  > but it never core dumps.

So. It's undefined behavior. Anything can happen. It might
even seem to work.

--
James Kanze kanze.james@neuf.fr
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