opov02.c

来自「开放源码的编译器open watcom 1.6.0版的源代码」· C语言 代码 · 共 29 行

#include "fail.h"

struct S {
    S * operator ->();
    int s;
};
struct P {};
struct T : P, S {
};

int foo( T &r )
{
    return r->s;
}
S * S::operator ->()
{
    ++s;
    return this;
}

int main() {
    T x;
    x.s = 1;
    if( foo( x ) != 2 ) fail(__LINE__);
    x.s = -1;
    if( foo( x ) != 0 ) fail(__LINE__);
    _PASS;
}