freebsd-dev/bin/sh/shell.h
Jilles Tjoelker e9749129ad sh: Detect dividing the smallest integer by -1.
This overflows and on some architectures such as amd64 it generates SIGFPE.
Generate an error on all architectures.
2011-02-12 23:44:05 +00:00

79 lines
2.7 KiB
C

/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Kenneth Almquist.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)shell.h 8.2 (Berkeley) 5/4/95
* $FreeBSD$
*/
#ifndef SHELL_H_
#define SHELL_H_
#include <inttypes.h>
/*
* The follow should be set to reflect the type of system you have:
* JOBS -> 1 if you have Berkeley job control, 0 otherwise.
* define DEBUG=1 to compile in debugging (set global "debug" to turn on)
* define DEBUG=2 to compile in and turn on debugging.
*
* When debugging is on, debugging info will be written to ./trace and
* a quit signal will generate a core dump.
*/
#define JOBS 1
/* #define DEBUG 1 */
/*
* Type of used arithmetics. SUSv3 requires us to have at least signed long.
*/
typedef intmax_t arith_t;
#define ARITH_FORMAT_STR "%" PRIdMAX
#define atoarith_t(arg) strtoimax(arg, NULL, 0)
#define strtoarith_t(nptr, endptr, base) strtoimax(nptr, endptr, base)
#define ARITH_MIN INTMAX_MIN
#define ARITH_MAX INTMAX_MAX
typedef void *pointer;
#define MKINIT /* empty */
#include <sys/cdefs.h>
extern char nullstr[1]; /* null string */
#ifdef DEBUG
#define TRACE(param) sh_trace param
#else
#define TRACE(param)
#endif
#endif /* !SHELL_H_ */