[over.match.call.general]
12 Overloading [over]
12.2 Overload resolution [over.match]
12.2.2 Candidate functions and argument lists [over.match.funcs]
12.2.2.2 Function call syntax [over.match.call]
12.2.2.2.1 General [over.match.call.general]
In a function call
if the postfix-expression names at least one function or function template, overload resolution is applied as specified in [over.call.func].
If the postfix-expression denotes an object of class type, overload resolution is applied as specified in [over.call.object].
If the postfix-expression is the address of an overload set, overload resolution is applied using that set as described above.
If the function selected by overload resolution is an implicit object member function, the program is ill-formed.
[Note 2:
The resolution of the address of an overload set in other contexts is described in [over.over].
— end note]