14 题：改进利用链接符号名的做法 #194
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14 题：改进利用链接符号名的做法 #194
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原理： Itanium ABI 上变量 ss::a; 的重整名为 _ZN2ss1aE 。 在 MSVC 上需要用 pragma 告诉链接器使用 MSVC ABI 的重整名 ?a@ss@@3Ha 。
Mq-b
reviewed
Dec 16, 2023
src/群友提交/第14题/F.v.S..cpp
Outdated
#include<iostream>
namespace ss {
int a = 0;
}
int main() {
enum ss { a = 100 };
std::cout << ss::a << '\n';
}这种利用名字查找优先级的方式的确不太合适。 |
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这里改进的写法看上去不需要修改
ss，可能更“干净”一点。原理：
ss::a的重整名为_ZN2ss1aE。#pragma告诉链接器使用 MSVC ABI 的重整名?a@ss@@3HA。Godbolt link
还有另一个作弊的写法，不过大概不符合要求：