刚发现 C 语言命名初始化语法糖（Designated Initializers）依赖标准库的 memset 和 memcpy

struct proc test_proc_1 = {
      .name = "test_proc_1",
      .pid = 1,
      .hartid = 0,
      .state = PROC_READY,
      .cpu = {
          .pc = (u64)&test_proc_1,
      }};

这段代码在链接的时候提示：

undefined reference to `memset'
undefined reference to `memcpy'

让 ChatGPT 给我实现了一下，编译链接进去就好了。

#include "kstring.h"

void *memset(void *s, int c, size_t n)
{
  unsigned char *p = s;
  while (n--)
    *p++ = (unsigned char)c;
  return s;
}

void *memcpy(void *dest, const void *src, size_t n)
{
  unsigned char *d = dest;
  const unsigned char *s = src;
  while (n--)
    *d++ = *s++;
  return dest;
}