c++ - 如何在 Linux 上强制执行 vector 下标超出范围调试断言

Question

此代码适用于 linux。

#include <vector>
#include <iostream>

using namespace std;


int main () 
{
    vector<int> v(10, 0);

    cout << v[100];

    return 0;
}

operator[] 用注释声明

      // element access
      /**
       *  @brief  Subscript access to the data contained in the %vector.
       *  @param __n The index of the element for which data should be
       *  accessed.
       *  @return  Read/write reference to data.
       *
       *  This operator allows for easy, array-style, data access.
       *  Note that data access with this operator is unchecked and
       *  out_of_range lookups are not defined. (For checked lookups
       *  see at().)
       */
      reference
      operator[](size_type __n) _GLIBCXX_NOEXCEPT
      { return *(this->_M_impl._M_start + __n); }

但是 MSVS 编译器会警告此类下标超出范围的情况。有什么方法可以模仿它的行为吗？

Answer 1

其实，我的一个同事已经找到了想要的答案:

-D_GLIBCXX_DEBUG

标志激活 libstdc++ 的 Debug模式。