execinfo.h

/* Copyright (C) 1998, 1999, 2004, 2005 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.


   Based on uClibc/include/execinfo.h

   Copyright (C) 2016 Gentoo Foundation
   Author(s): Anthony G. Basile
   - rework to build on musl

 */

#ifndef _EXECINFO_H
#define _EXECINFO_H 1

#include <features.h>

/* __BEGIN_DECLS */
#ifdef __cplusplus
extern "C" {
#endif

#ifndef __nonnull
# define __nonnull(params) __attribute__ ((__nonnull__ params))
#endif

#ifndef __THROW
# define __THROW __attribute__ ((__nothrow__ , __leaf__))
#endif

/* Store up to SIZE return address of the current program state in
   ARRAY and return the exact number of values stored.  */
extern int backtrace (void **__array, int __size) __nonnull ((1));


/* Return names of functions from the backtrace list in ARRAY in a newly
   malloc()ed memory block.  */
extern char **backtrace_symbols (void *const *__array, int __size)
     __THROW __nonnull ((1));


/* This function is similar to backtrace_symbols() but it writes the result
   immediately to a file.  */
extern void backtrace_symbols_fd (void *const *__array, int __size, int __fd)
     __THROW __nonnull ((1));

/* __END_DECLS */
#ifdef __cplusplus
}
#endif

#endif /* execinfo.h  */