16 Overloading [over]

16.3 Overload resolution [over.match]

16.3.1 Candidate functions and argument lists [over.match.funcs] Copy-initialization of class by user-defined conversion [over.match.copy]

Under the conditions specified in [dcl.init], as part of a copy-initialization of an object of class type, a user-defined conversion can be invoked to convert an initializer expression to the type of the object being initialized. Overload resolution is used to select the user-defined conversion to be invoked. [Note: The conversion performed for indirect binding to a reference to a possibly cv-qualified class type is determined in terms of a corresponding non-reference copy-initialization. end note] Assuming that “cv1 T” is the type of the object being initialized, with T a class type, the candidate functions are selected as follows:

In both cases, the argument list has one argument, which is the initializer expression. [Note: This argument will be compared against the first parameter of the constructors and against the implicit object parameter of the conversion functions. end note]