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main2.c revision 1.29 
      1 /*	$NetBSD: main2.c,v 1.29 2023/06/09 13:03:49 rillig 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 #if HAVE_NBTOOL_CONFIG_H
     35 #include "nbtool_config.h"
     36 #endif
     37 
     38 #include <sys/cdefs.h>
     39 #if defined(__RCSID)
     40 __RCSID("$NetBSD: main2.c,v 1.29 2023/06/09 13:03:49 rillig Exp $");
     41 #endif
     42 
     43 #include <stdio.h>
     44 #include <stdlib.h>
     45 #include <string.h>
     46 #include <unistd.h>
     47 
     48 #include "lint2.h"
     49 
     50 /* warnings for symbols which are declared but not defined or used */
     51 bool	xflag;
     52 
     53 /*
     54  * warnings for symbols which are used and not defined or defined
     55  * and not used
     56  */
     57 bool	uflag = true;
     58 
     59 /* Create a lint library in the current directory with name libname. */
     60 bool	Cflag;
     61 const char *libname;
     62 
     63 /*
     64  * warnings for (tentative) definitions of the same name in more than
     65  * one translation unit
     66  */
     67 bool	sflag;
     68 
     69 bool	tflag;
     70 
     71 /*
     72  * If a complaint stems from a included file, print the name of the included
     73  * file instead of the name specified at the command line followed by '?'
     74  */
     75 bool	Hflag;
     76 
     77 bool	hflag;
     78 
     79 /* Print full path names, not only the last component */
     80 bool	Fflag;
     81 
     82 /*
     83  * List of libraries (from -l flag). These libraries are read after all
     84  * other input files has been read and, for Cflag, after the new lint library
     85  * has been written.
     86  */
     87 static const char **libs;
     88 
     89 static	void	usage(void) __attribute__((noreturn));
     90 
     91 static void
     92 check_name_non_const(hte_t *hte)
     93 {
     94 	check_name(hte);
     95 }
     96 
     97 int
     98 main(int argc, char *argv[])
     99 {
    100 	int c, i;
    101 	size_t len;
    102 	char *lname;
    103 
    104 	libs = xcalloc(1, sizeof(*libs));
    105 
    106 	opterr = 0;
    107 	while ((c = getopt(argc, argv, "hstxuC:HFl:")) != -1) {
    108 		switch (c) {
    109 		case 's':
    110 			sflag = true;
    111 			break;
    112 		case 't':
    113 			tflag = true;
    114 			break;
    115 		case 'u':
    116 			uflag = false;
    117 			break;
    118 		case 'x':
    119 			xflag = true;
    120 			break;
    121 		case 'C':
    122 			len = strlen(optarg);
    123 			lname = xmalloc(len + 10);
    124 			(void)sprintf(lname, "llib-l%s.ln", optarg);
    125 			libname = lname;
    126 			Cflag = true;
    127 			uflag = false;
    128 			break;
    129 		case 'H':
    130 			Hflag = true;
    131 			break;
    132 		case 'h':
    133 			hflag = true;
    134 			break;
    135 		case 'F':
    136 			Fflag = true;
    137 			break;
    138 		case 'l':
    139 			for (i = 0; libs[i] != NULL; i++)
    140 				continue;
    141 			libs = xrealloc(libs, (i + 2) * sizeof(*libs));
    142 			libs[i] = xstrdup(optarg);
    143 			libs[i + 1] = NULL;
    144 			break;
    145 		default:
    146 			usage();
    147 		}
    148 	}
    149 
    150 	argc -= optind;
    151 	argv += optind;
    152 
    153 	if (argc == 0)
    154 		usage();
    155 
    156 	symtab_init();
    157 
    158 	for (i = 0; i < argc; i++)
    159 		readfile(argv[i]);
    160 
    161 	/* write the lint library */
    162 	if (Cflag) {
    163 		symtab_forall(mkstatic);
    164 		outlib(libname);
    165 	}
    166 
    167 	/* read additional libraries */
    168 	for (i = 0; libs[i] != NULL; i++)
    169 		readfile(libs[i]);
    170 
    171 	symtab_forall(mkstatic);
    172 
    173 	mark_main_as_used();
    174 
    175 	/* perform all tests */
    176 	symtab_forall_sorted(check_name_non_const);
    177 
    178 	return 0;
    179 }
    180 
    181 static void
    182 usage(void)
    183 {
    184 	(void)fprintf(stderr,
    185 		      "usage: lint2 -hpstxuHFT -Clib -l lib ... src1 ...\n");
    186 	exit(1);
    187 }
    188