main1.c revision 281168 
1/*	$NetBSD: main1.c,v 1.17 2006/11/08 18:31:15 christos Exp $	*/
2
3/*
4 * Copyright (c) 1994, 1995 Jochen Pohl
5 * All Rights Reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 * 3. All advertising materials mentioning features or use of this software
16 *    must display the following acknowledgement:
17 *      This product includes software developed by Jochen Pohl for
18 *	The NetBSD Project.
19 * 4. The name of the author may not be used to endorse or promote products
20 *    derived from this software without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
23 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
24 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
25 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
27 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
28 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
29 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
30 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
31 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
32 */
33
34#include <sys/cdefs.h>
35#if defined(__RCSID) && !defined(lint)
36__RCSID("$NetBSD: main1.c,v 1.17 2006/11/08 18:31:15 christos Exp $");
37#endif
38__FBSDID("$FreeBSD: stable/10/usr.bin/xlint/lint1/main1.c 281168 2015-04-06 19:56:27Z pfg $");
39
40#include <sys/types.h>
41#include <stdio.h>
42#include <string.h>
43#include <stdlib.h>
44#include <unistd.h>
45#include <err.h>
46#include <errno.h>
47#include <limits.h>
48
49#include "lint1.h"
50
51/* set yydebug to 1*/
52int	yflag;
53
54/*
55 * Print warnings if an assignment of an integertype to another integertype
56 * causes an implicit narrowing conversion. If aflag is 1, these warnings
57 * are printed only if the source type is at least as wide as long. If aflag
58 * is greater than 1, they are always printed.
59 */
60int	aflag;
61
62/* Print a warning if a break statement cannot be reached. */
63int	bflag;
64
65/* Print warnings for pointer casts. */
66int	cflag;
67
68/* Print various debug information. */
69int	dflag;
70
71/* Perform stricter checking of enum types and operations on enum types. */
72int	eflag;
73
74/* Print complete pathnames, not only the basename. */
75int	Fflag;
76
77/* Enable some extensions of gcc */
78int	gflag;
79
80/* Treat warnings as errors */
81int	wflag;
82
83/*
84 * Apply a number of heuristic tests to attempt to intuit bugs, improve
85 * style, and reduce waste.
86 */
87int	hflag;
88
89/* Attempt to check portability to other dialects of C. */
90int	pflag;
91
92/*
93 * In case of redeclarations/redefinitions print the location of the
94 * previous declaration/definition.
95 */
96int	rflag;
97
98/* Strict ANSI C mode. */
99int	sflag;
100
101/* Traditional C mode. */
102int	tflag;
103
104/* Enable C9X extensions */
105int	Sflag;
106/*
107 * Complain about functions and external variables used and not defined,
108 * or defined and not used.
109 */
110int	uflag = 1;
111
112/* Complain about unused function arguments. */
113int	vflag = 1;
114
115/* Complain about structures which are never defined. */
116int	zflag = 1;
117
118err_set	msgset;
119
120static	void	usage(void);
121
122int main(int, char *[]);
123
124int
125main(int argc, char *argv[])
126{
127	int	c;
128	char	*ptr;
129
130	ERR_ZERO(&msgset);
131	while ((c = getopt(argc, argv, "abcdeghmprstuvwyzFSX:")) != -1) {
132		switch (c) {
133		case 'a':	aflag++;	break;
134		case 'b':	bflag = 1;	break;
135		case 'c':	cflag = 1;	break;
136		case 'd':	dflag = 1;	break;
137		case 'e':	eflag = 1;	break;
138		case 'F':	Fflag = 1;	break;
139		case 'g':	gflag = 1;	break;
140		case 'h':	hflag = 1;	break;
141		case 'p':	pflag = 1;	break;
142		case 'r':	rflag = 1;	break;
143		case 's':	sflag = 1;	break;
144		case 'S':	Sflag = 1;	break;
145		case 't':	tflag = 1;	break;
146		case 'u':	uflag = 0;	break;
147		case 'w':	wflag = 1;	break;
148		case 'v':	vflag = 0;	break;
149		case 'y':	yflag = 1;	break;
150		case 'z':	zflag = 0;	break;
151
152		case 'm':
153			msglist();
154			return(0);
155
156		case 'X':
157			for (ptr = strtok(optarg, ","); ptr;
158			    ptr = strtok(NULL, ",")) {
159				char *eptr;
160				long msg;
161
162				errno = 0;
163				msg = strtol(ptr, &eptr, 0);
164				if ((msg == LONG_MIN || msg == LONG_MAX) &&
165				    errno == ERANGE)
166				    err(1, "invalid error message id '%s'",
167					ptr);
168				if (*eptr || ptr == eptr || msg < 0 ||
169				    msg >= ERR_SETSIZE)
170					errx(1, "invalid error message id '%s'",
171					    ptr);
172				ERR_SET(msg, &msgset);
173			}
174			break;
175		case '?':
176		default:
177			usage();
178			break;
179		}
180	}
181	argc -= optind;
182	argv += optind;
183
184	if (argc != 2)
185		usage();
186
187	/* open the input file */
188	if ((yyin = fopen(argv[0], "r")) == NULL)
189		err(1, "cannot open '%s'", argv[0]);
190
191	/* initialize output */
192	outopen(argv[1]);
193
194	if (yflag)
195		yydebug = 1;
196
197	initmem();
198	initdecl();
199	initscan();
200	initmtab();
201
202	yyparse();
203
204	/* Following warnings cannot be suppressed by LINTED */
205	nowarn = 0;
206#ifdef DEBUG
207	printf("%s, %d: nowarn = 0\n", curr_pos.p_file, curr_pos.p_line);
208#endif
209	chkglsyms();
210
211	outclose();
212
213	return (nerr != 0);
214}
215
216static void
217usage(void)
218{
219	(void)fprintf(stderr,
220	    "usage: lint1 [-abcdeghmprstuvwyzFS] [-X <id>[,<id>]... src dest\n");
221	exit(1);
222}
223
224void
225norecover(void)
226{
227	/* cannot recover from previous errors */
228	error(224);
229	exit(1);
230}
231