Andrew's git - gitweb.git/blob

   1#ifndef BANNED_H
   2#define BANNED_H
   3
   4/*
   5 * This header lists functions that have been banned from our code base,
   6 * because they're too easy to misuse (and even if used correctly,
   7 * complicate audits). Including this header turns them into compile-time
   8 * errors.
   9 */
  10
  11#define BANNED(func) sorry_##func##_is_a_banned_function
  12
  13#undef strcpy
  14#define strcpy(x,y) BANNED(strcpy)
  15#undef strcat
  16#define strcat(x,y) BANNED(strcat)
  17#undef strncpy
  18#define strncpy(x,y,n) BANNED(strncpy)
  19#undef strncat
  20#define strncat(x,y,n) BANNED(strncat)
  21
  22#undef sprintf
  23#undef vsprintf
  24#ifdef HAVE_VARIADIC_MACROS
  25#define sprintf(...) BANNED(sprintf)
  26#define vsprintf(...) BANNED(vsprintf)
  27#else
  28#define sprintf(buf,fmt,arg) BANNED(sprintf)
  29#define vsprintf(buf,fmt,arg) BANNED(vsprintf)
  30#endif
  31
  32#endif /* BANNED_H */