编辑:
我设法在较小的范围内解决了同样的问题:
std::istringstream hex;
std::string str = "0x7ffa428ab946";
std::cout << "str " << str << std::endl;
hex.str(str);
long caller;
hex >> std::hex >> caller;
std::cout << "caller " << caller << std::endl;
str = "0x7ff9ec0010f0";
std::cout << "str " << str << std::endl;
hex.str(str);
long address;
hex >> std::hex >> address;
std::cout << "address " << address << std::endl;
得到这个:
str 0x7ffa428ab946
caller 140712834939206
str 0x7ff9ec0010f0
address 0
这是为什么?