c++ - 比较函数指针

Question

如何比较 C++ 中的函数指针？稳定吗？

例如，这样的事情是否有效:

if(pFnc == &myFnc){
//Do something
}

Answer 1

C++03 5.10/1 [expr.eq]:

The == (equal to) and the != (not equal to) operators have the same semantic restrictions, conversions, and result type as the relational operators except for their lower precedence and truth-value result. [Note: a < b == c < d is true whenever a < b and c < d have the same truth-value. ] Pointers to objects or functions of the same type (after pointer conversions) can be compared for equality. Two pointers of the same type compare equal if and only if they are both null, both point to the same function, or both represent the same address (3.9.2).

强调我的。