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/// return wrappers for unexpected NULL pointers
#ifndef NULLPO_H
#define NULLPO_H
/// Comment this out to live dangerously
# define NULLPO_CHECK
/// All functions print to standard error (was: standard output)
/// nullpo_ret(cond) - return 0 if given pointer is NULL
/// nullpo_retv(cond) - just return (function returns void)
/// nullpo_retr(rv, cond) - return given value instead
/// the _f variants take a printf-format string and arguments
# ifdef NULLPO_CHECK
# define NLP_MARK __FILE__, __LINE__, __func__
# define nullpo_ret(t) \
if (nullpo_chk(NLP_MARK, t)) \
return 0;
# define nullpo_retv(t) \
if (nullpo_chk(NLP_MARK, t)) \
return;
# define nullpo_retr(ret, t) \
if (nullpo_chk(NLP_MARK, t)) \
return ret;
# define nullpo_ret_f(t, fmt, ...) \
if (nullpo_chk_f(NLP_MARK, t, fmt, ##__VA_ARGS__)) \
return 0;
# define nullpo_retv_f(t, fmt, ...) \
if (nullpo_chk_f(NLP_MARK, t, fmt, ##__VA_ARGS__)) \
return;
# define nullpo_retr_f(ret, t, fmt, ...) \
if (nullpo_chk_f(NLP_MARK, t, fmt, ##__VA_ARGS__)) \
return ret;
# else // NULLPO_CHECK
# define nullpo_ret(t) t;
# define nullpo_retv(t) t;
# define nullpo_retr(ret, t) t;
# define nullpo_ret_f(t, fmt, ...) t;
# define nullpo_retv_f(t, fmt, ...) t;
# define nullpo_retr_f(ret, t, fmt, ...) t;
# endif // NULLPO_CHECK
# include "sanity.h"
/// Used by macros in this header
bool nullpo_chk (const char *file, int line, const char *func,
const void *target);
/// Used by macros in this header
bool nullpo_chk_f (const char *file, int line, const char *func,
const void *target, const char *fmt, ...)
__attribute__ ((format (printf, 5, 6)));
/// Used only by map/battle.c
void nullpo_info (const char *file, int line, const char *func);
/// Not used
void nullpo_info_f (const char *file, int line, const char *func,
const char *fmt, ...)
__attribute__ ((format (printf, 4, 5)));
#endif // NULLPO_H
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