Hi Neo, >Can you copy/paste for me? Thanks. Excerpt from ISO 14882:1998 13.3.3.1.4.3 A standard conversion sequence cannot be formed if it requires binding a reference to a non-const to an rvalue (except when binding an implicit object parameter; see the special rules for that case in 13.3.1). [Note: this means, for example, that a candidate function cannot be a viable function if it has a non-const reference parameter (other than the implicit object parameter) and the corresponding argument is a temporary or would require one to be created to initialize the reference (see 8.5.3).] >Can you tell me where the DOH is? Your example does not involve a temporary, which was the point of the example I was trying to contrive, and mimics the situation you had originally inquired about. Sincerely, --Eljay