[Boost-users] [Boost.Assign][doc] Question on a statement in the documentation

Here http://www.boost.org/doc/libs/1_40_0/libs/assign/doc/index.html#extensions is stated "it is illegal to take the address of a function in the standard library" Is it correct? Where is it mentioned in the Standard? 17.4.4.4/2 says that a member function may be replaced with the version with other signature, but a) "a member function" != "a function" b) May be replaced with the version with other signature doesn't mean one cannot take its address, it only means taking its address doesn't make sense for portable code.