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/* err.h: Error handling and reporting.
*
* Copyright (C) 2001-2010 by Brian Raiter and Madhav Shanbhag,
* under the GNU General Public License. No warranty. See COPYING for details.
*/
#ifndef HEADER_err_h_
#define HEADER_err_h_
/* Simple macros for dealing with memory allocation simply.
*/
#define memerrexit() (die("out of memory"))
#define x_alloc(p, n) (((p) = realloc((p), (n))) || (memerrexit(), 0))
#ifdef __cplusplus
extern "C" {
#endif
/* Log an error message and continue.
*/
extern void warn_(char const *fmt, ...);
/* Display an error message.
*/
extern void errmsg_(char const *prefix, char const *fmt, ...);
/* Display an error message and abort.
*/
extern void die_(char const *fmt, ...) __attribute__((noreturn));
#ifdef __cplusplus
}
#endif
/* A really ugly hack used to smuggle extra arguments into variadic
* functions.
*/
extern char const *err_cfile_;
extern unsigned long err_lineno_;
#define warn (err_cfile_ = __FILE__, err_lineno_ = __LINE__, warn_)
#define errmsg (err_cfile_ = __FILE__, err_lineno_ = __LINE__, errmsg_)
#define die (err_cfile_ = __FILE__, err_lineno_ = __LINE__, die_)
#endif
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