相关疑难解决方法(0)

更新:以下问题似乎取决于该-fwhole-program选项.

我一直在玩内存分配,我遇到了一个小小的谜团:在GCC(4.6)中,当我用[/] 编译时如何std::string分配它的内存[ edit-fwhole-program ]？

有以下测试程序:

#include <new>
#include <string>
#include <iostream>
#include <cstdlib>

void * operator new(std::size_t n) throw(std::bad_alloc)
{
  void * const p = std::malloc(n);

  if (p == NULL) throw std::bad_alloc();

  std::cerr << "new() requests " << n << " bytes, allocated at " << p << ".\n";

  return p;
}

void operator delete(void * p) noexcept
{
  std::cerr << "delete() at " << p << ".\n";
  std::free(p);
}

int main()
{ …