n3337 13.1
[ Note: As specified in 8.3.5, function declarations that have
equivalent parameter declarations declare the same function and
therefore cannot be overloaded: ffer only in the presence or absence
— Parameter declarations that di3
of const and/or volatile are equivalent. That is, the const and
volatile type-specifiers for each parameter type are ignored when
determining which function is being declared, defined, or called. [
Example:
typedef const int cInt;
int f(int);
int f(const int); // redeclaration of f(int)
int f(int) { /* ... */ } // definition of f(int)
int f(cInt) { /* ... */ } // error: redefinition of f(int)
— end
example ] Only the const and volatile type-specifiers at the outermost
level of the parameter type specifica- tion are ignored in this
fashion; const and volatile type-specifiers buried within a parameter
type specification are significant and can be used to distinguish
overloaded function declarations.124 In particular, for any type T,
“pointer to T,” “pointer to const T,” and “pointer to volatile T” are
considered distinct parameter types, as are “reference to T,”
“reference to const T,” and “reference to volatile T.”
