main1.c revision 1.41
1 /* $NetBSD: main1.c,v 1.41 2021/03/28 15:36:37 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) && !defined(lint) 40 __RCSID("$NetBSD: main1.c,v 1.41 2021/03/28 15:36:37 rillig Exp $"); 41 #endif 42 43 #include <sys/types.h> 44 #include <errno.h> 45 #include <limits.h> 46 #include <signal.h> 47 #include <stdio.h> 48 #include <stdlib.h> 49 #include <string.h> 50 #include <unistd.h> 51 52 #include "lint1.h" 53 54 /* set yydebug to 1*/ 55 bool yflag; 56 57 /* 58 * Print warnings if an assignment of an integer type to another integer type 59 * causes an implicit narrowing conversion. If aflag is 1, these warnings 60 * are printed only if the source type is at least as wide as long. If aflag 61 * is greater than 1, they are always printed. 62 */ 63 int aflag; 64 65 /* Print a warning if a break statement cannot be reached. */ 66 bool bflag; 67 68 /* Print warnings for pointer casts. */ 69 bool cflag; 70 71 /* Print various debug information. */ 72 bool dflag; 73 74 /* Perform stricter checking of enum types and operations on enum types. */ 75 bool eflag; 76 77 /* Print complete pathnames, not only the basename. */ 78 bool Fflag; 79 80 /* Enable some extensions of gcc */ 81 bool gflag; 82 83 /* Treat warnings as errors */ 84 bool wflag; 85 86 /* 87 * Apply a number of heuristic tests to attempt to intuit bugs, improve 88 * style, and reduce waste. 89 */ 90 bool hflag; 91 92 /* Attempt to check portability to other dialects of C. */ 93 bool pflag; 94 95 /* 96 * In case of redeclarations/redefinitions print the location of the 97 * previous declaration/definition. 98 */ 99 bool rflag; 100 101 /* Strict ANSI C mode. */ 102 bool sflag; 103 104 bool Tflag; 105 106 /* Traditional C mode. */ 107 bool tflag; 108 109 /* Enable C9X extensions */ 110 bool Sflag; 111 112 /* Picky flag */ 113 bool Pflag; 114 115 /* 116 * Complain about functions and external variables used and not defined, 117 * or defined and not used. 118 */ 119 bool uflag = true; 120 121 /* Complain about unused function arguments. */ 122 bool vflag = true; 123 124 /* Complain about structures which are never defined. */ 125 bool zflag = true; 126 127 err_set msgset; 128 129 sig_atomic_t fpe; 130 131 static void usage(void); 132 133 static const char builtins[] = 134 "int __builtin_isinf(long double);\n" 135 "int __builtin_isnan(long double);\n" 136 "int __builtin_copysign(long double, long double);\n" 137 ; 138 static const size_t builtinlen = sizeof builtins - 1; 139 140 static FILE * 141 gcc_builtins(void) 142 { 143 #if HAVE_NBTOOL_CONFIG_H 144 char template[] = "/tmp/lint.XXXXXX"; 145 int fd; 146 FILE *fp; 147 if ((fd = mkstemp(template)) == -1) 148 return NULL; 149 (void)unlink(template); 150 if ((fp = fdopen(fd, "r+")) == NULL) { 151 close(fd); 152 return NULL; 153 } 154 if (fwrite(builtins, 1, builtinlen, fp) != builtinlen) { 155 fclose(fp); 156 return NULL; 157 } 158 rewind(fp); 159 return fp; 160 #else 161 return fmemopen(__UNCONST(builtins), builtinlen, "r"); 162 #endif 163 } 164 165 /*ARGSUSED*/ 166 static void 167 sigfpe(int s) 168 { 169 fpe = 1; 170 } 171 172 int 173 main(int argc, char *argv[]) 174 { 175 int c; 176 char *ptr; 177 178 setprogname(argv[0]); 179 180 ERR_ZERO(&msgset); 181 while ((c = getopt(argc, argv, "abcdeghmprstuvwyzFPR:STX:")) != -1) { 182 switch (c) { 183 case 'a': aflag++; break; 184 case 'b': bflag = true; break; 185 case 'c': cflag = true; break; 186 case 'd': dflag = true; break; 187 case 'e': eflag = true; break; 188 case 'F': Fflag = true; break; 189 case 'g': gflag = true; break; 190 case 'h': hflag = true; break; 191 case 'p': pflag = true; break; 192 case 'P': Pflag = true; break; 193 case 'r': rflag = true; break; 194 case 's': sflag = true; break; 195 case 'S': Sflag = true; break; 196 case 'T': Tflag = true; break; 197 case 't': tflag = true; break; 198 case 'u': uflag = false; break; 199 case 'w': wflag = true; break; 200 case 'v': vflag = false; break; 201 case 'y': yflag = true; break; 202 case 'z': zflag = false; break; 203 204 case 'm': 205 msglist(); 206 return 0; 207 208 case 'R': 209 add_directory_replacement(optarg); 210 break; 211 212 case 'X': 213 for (ptr = strtok(optarg, ","); ptr != NULL; 214 ptr = strtok(NULL, ",")) { 215 char *eptr; 216 long msg; 217 218 errno = 0; 219 msg = strtol(ptr, &eptr, 0); 220 if ((msg == TARG_LONG_MIN || msg == TARG_LONG_MAX) && 221 errno == ERANGE) 222 err(1, "invalid error message id '%s'", 223 ptr); 224 if (*eptr != '\0' || ptr == eptr || msg < 0 || 225 msg >= ERR_SETSIZE) 226 errx(1, "invalid error message id '%s'", 227 ptr); 228 ERR_SET(msg, &msgset); 229 } 230 break; 231 case '?': 232 default: 233 usage(); 234 break; 235 } 236 } 237 argc -= optind; 238 argv += optind; 239 240 if (argc != 2) 241 usage(); 242 243 244 /* initialize output */ 245 outopen(argv[1]); 246 247 #ifdef YYDEBUG 248 if (yflag) 249 yydebug = 1; 250 #endif 251 252 (void)signal(SIGFPE, sigfpe); 253 initmem(); 254 initdecl(); 255 initscan(); 256 257 if (gflag) { 258 if ((yyin = gcc_builtins()) == NULL) 259 err(1, "cannot open builtins"); 260 yyparse(); 261 fclose(yyin); 262 } 263 264 /* open the input file */ 265 if ((yyin = fopen(argv[0], "r")) == NULL) 266 err(1, "cannot open '%s'", argv[0]); 267 yyparse(); 268 fclose(yyin); 269 270 /* Following warnings cannot be suppressed by LINTED */ 271 lwarn = LWARN_ALL; 272 #ifdef DEBUG 273 printf("%s, %d: lwarn = %d\n", curr_pos.p_file, curr_pos.p_line, lwarn); 274 #endif 275 276 check_global_symbols(); 277 278 outclose(); 279 280 return nerr != 0 ? 1 : 0; 281 } 282 283 static void 284 usage(void) 285 { 286 (void)fprintf(stderr, 287 "Usage: %s [-abcdeghmprstuvwyzFST] [-X <id>[,<id>]... src dest\n", 288 getprogname()); 289 exit(1); 290 } 291 292 void 293 norecover(void) 294 { 295 /* cannot recover from previous errors */ 296 error(224); 297 exit(1); 298 } 299
Indexes created Thu Sep 25 16:09:42 GMT 2025