ObjFW  Check-in [61369b9d26]

#define OF_ENSURE(cond)							\
	if (!(cond)) {							\
		fprintf(stderr, "Failed to ensure condition in "	\
		    __FILE__ ":%d:\n" #cond "\n", __LINE__);		\
		abort();						\
	}

#if __STDC_VERSION__ >= 201112L
# /* C11 compiler, but old libc */
#if __STDC_VERSION__ >= 201112L && !defined(static_assert)
/* C11 compiler, but old libc */
# ifndef static_assert
#  define static_assert _Static_assert
# define static_assert _Static_assert
# endif
#else
# define static_assert assert
#endif

#if !defined(_WIN32) && !defined(__DJGPP__)
# define OF_PATH_DELIMITER '/'
# define OF_PATH_DELIMITER_STRING @"/"
# define OF_IS_PATH_DELIMITER(c) (c == '/')
#else