usr.bin/xlint/lint1/main1.c

   1 /*      $NetBSD: main1.c,v 1.3 1995/10/02 17:29:56 jpo 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  * $NetBSD: main1.c,v 1.3 1995/10/02 17:29:56 jpo Exp $
  34  * $DragonFly: src/usr.bin/xlint/lint1/main1.c,v 1.6 2004/07/07 12:24:00 asmodai Exp $
  35  */
  36
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <unistd.h>
  40 #include <err.h>
  41
  42 #include "lint1.h"
  43
  44 /* set yydebug to 1*/
  45 int     yflag;
  46
  47 /*
  48  * Print warnings if an assignment of an integertype to another integertype
  49  * causes an implizit narrowing conversion. If aflag is 1, these warnings
  50  * are printed only if the source type is at least as wide as long. If aflag
  51  * is greather then 1, they are always printed.
  52  */
  53 int     aflag;
  54
  55 /* Print a warning if a break statement cannot be reached. */
  56 int     bflag;
  57
  58 /* Print warnings for pointer casts. */
  59 int     cflag;
  60
  61 /* Print various debug information. */
  62 int     dflag;
  63
  64 /* Perform stricter checking of enum types and operations on enum types. */
  65 int     eflag;
  66
  67 /* Print complete pathnames, not only the basename. */
  68 int     Fflag;
  69
  70 /* Enable some extensions of gcc */
  71 int     gflag;
  72
  73 /*
  74  * Apply a number of heuristic tests to attempt to intuit bugs, improve
  75  * style, and reduce waste.
  76  */
  77 int     hflag;
  78
  79 /* Attempt to check portability to other dialects of C. */
  80 int     pflag;
  81
  82 /*
  83  * In case of redeclarations/redefinitions print the location of the
  84  * previous declaration/definition.
  85  */
  86 int     rflag;
  87
  88 /* Strict ANSI C mode. */
  89 int     sflag;
  90
  91 /* Traditional C mode. */
  92 int     tflag;
  93
  94 /*
  95  * Complain about functions and external variables used and not defined,
  96  * or defined and not used.
  97  */
  98 int     uflag = 1;
  99
 100 /* Complain about unused function arguments. */
 101 int     vflag = 1;
 102
 103 /* Complain about structures which are never defined. */
 104 int     zflag = 1;
 105
 106 static  void    usage(void);
 107
 108 int
 109 main(int argc, char *argv[])
 110 {
 111         int     c;
 112
 113         while ((c = getopt(argc, argv, "abcdeghprstuvyzF")) != -1) {
 114                 switch (c) {
 115                 case 'a':       aflag++;        break;
 116                 case 'b':       bflag = 1;      break;
 117                 case 'c':       cflag = 1;      break;
 118                 case 'd':       dflag = 1;      break;
 119                 case 'e':       eflag = 1;      break;
 120                 case 'F':       Fflag = 1;      break;
 121                 case 'g':       gflag = 1;      break;
 122                 case 'h':       hflag = 1;      break;
 123                 case 'p':       pflag = 1;      break;
 124                 case 'r':       rflag = 1;      break;
 125                 case 's':       sflag = 1;      break;
 126                 case 't':       tflag = 1;      break;
 127                 case 'u':       uflag = 0;      break;
 128                 case 'v':       vflag = 0;      break;
 129                 case 'y':       yflag = 1;      break;
 130                 case 'z':       zflag = 0;      break;
 131                 case '?':       usage();
 132                 }
 133         }
 134         argc -= optind;
 135         argv += optind;
 136
 137         if (argc != 2)
 138                 usage();
 139
 140         /* open the input file */
 141         if ((yyin = fopen(argv[0], "r")) == NULL)
 142                 err(1, "cannot open '%s'", argv[0]);
 143
 144         /* initialize output */
 145         outopen(argv[1]);
 146
 147         if (yflag)
 148                 yydebug = 1;
 149
 150         initmem();
 151         initdecl();
 152         initscan();
 153         initmtab();
 154
 155         yyparse();
 156
 157         /* Following warnings cannot be suppressed by LINTED */
 158         nowarn = 0;
 159
 160         chkglsyms();
 161
 162         outclose();
 163
 164         return (nerr != 0);
 165 }
 166
 167 static void
 168 usage(void)
 169 {
 170         (void)fprintf(stderr, "usage: lint1 [-abcdeghprstuvyzF] src dest\n");
 171         exit(1);
 172 }
 173
 174 void
 175 norecover(void)
 176 {
 177         /* cannot recover from previous errors */
 178         error(224);
 179         exit(1);
 180 }