cutils.h

   1 #ifndef CUTILS_H
   2 #define CUTILS_H
   3
   4 #if defined __GNUC__
   5 #define UNUSED_ATTR __attribute__ ((unused))
   6 #if !defined __clang__
   7 #define NO_OPTIMIZE_ATTR __attribute__ ((optimize ("O0")))
   8 #else
   9 #define NO_OPTIMIZE_ATTR __attribute__ ((optnone))
  10 #endif
  11 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
  12 #else
  13 #error Stringent C compiler requirements not satisfied
  14 #endif
  15
  16 extern _Noreturn void GCC_FMT_ATTR (3, 4)
  17     err (int errno_val, int exitcode, const char *fmt, ...);
  18 extern _Noreturn void GCC_FMT_ATTR (2, 3)
  19     errx (int exitcode, const char *fmt, ...);
  20 extern void *parse_pointer (const char *cap, const char *s);
  21 extern double now (void);
  22 extern void fmt_linkn (char *s, const char *c, unsigned int l, int n);
  23
  24 #endif