cutils.h

   1 #ifndef CUTILS_H
   2 #define CUTILS_H
   3
   4 #if defined __GNUC__
   5 #define NORETURN_ATTR __attribute__ ((noreturn))
   6 #define UNUSED_ATTR __attribute__ ((unused))
   7 #if !defined __clang__
   8 #define NO_OPTIMIZE_ATTR __attribute__ ((optimize ("O0")))
   9 #else
  10 #define NO_OPTIMIZE_ATTR __attribute__ ((optnone))
  11 #endif
  12 #define GCC_FMT_ATTR(a, b) __attribute__ ((format (printf, a, b)))
  13 #else
  14 #error Stringent C compiler requirements not satisfied
  15 #endif
  16
  17 extern void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
  18     err (int exitcode, const char *fmt, ...);
  19 extern void NORETURN_ATTR GCC_FMT_ATTR (2, 3)
  20     errx (int exitcode, const char *fmt, ...);
  21 extern void *parse_pointer (const char *cap, const char *s);
  22 extern double now (void);
  23 extern void fmt_linkn (char *s, unsigned int u);
  24 extern char *ystrdup (const char *s);
  25
  26 #endif