| 1 | /* Demangler test program, |
| 2 | Copyright (C) 2002-2020 Free Software Foundation, Inc. |
| 3 | Written by Zack Weinberg <zack@codesourcery.com |
| 4 | |
| 5 | This file is part of GNU libiberty. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 20 | */ |
| 21 | |
| 22 | #ifdef HAVE_CONFIG_H |
| 23 | #include "config.h" |
| 24 | #endif |
| 25 | #include "ansidecl.h" |
| 26 | #include <stdio.h> |
| 27 | #include "libiberty.h" |
| 28 | #include "demangle.h" |
| 29 | #ifdef HAVE_STRING_H |
| 30 | #include <string.h> |
| 31 | #endif |
| 32 | #if HAVE_STDLIB_H |
| 33 | # include <stdlib.h> |
| 34 | #endif |
| 35 | #ifdef HAVE_UNISTD_H |
| 36 | #include <unistd.h> |
| 37 | #endif |
| 38 | |
| 39 | struct line |
| 40 | { |
| 41 | size_t alloced; |
| 42 | char *data; |
| 43 | }; |
| 44 | |
| 45 | static unsigned int lineno; |
| 46 | |
| 47 | /* Safely read a single line of arbitrary length from standard input. */ |
| 48 | |
| 49 | #define LINELEN 80 |
| 50 | |
| 51 | static void |
| 52 | get_line(buf) |
| 53 | struct line *buf; |
| 54 | { |
| 55 | char *data = buf->data; |
| 56 | size_t alloc = buf->alloced; |
| 57 | size_t count = 0; |
| 58 | int c; |
| 59 | |
| 60 | if (data == 0) |
| 61 | { |
| 62 | data = xmalloc (LINELEN); |
| 63 | alloc = LINELEN; |
| 64 | } |
| 65 | |
| 66 | /* Skip comment lines. */ |
| 67 | while ((c = getchar()) == '#') |
| 68 | { |
| 69 | while ((c = getchar()) != EOF && c != '\n'); |
| 70 | lineno++; |
| 71 | } |
| 72 | |
| 73 | /* c is the first character on the line, and it's not a comment |
| 74 | line: copy this line into the buffer and return. */ |
| 75 | while (c != EOF && c != '\n') |
| 76 | { |
| 77 | if (count + 1 >= alloc) |
| 78 | { |
| 79 | alloc *= 2; |
| 80 | data = xrealloc (data, alloc); |
| 81 | } |
| 82 | data[count++] = c; |
| 83 | c = getchar(); |
| 84 | } |
| 85 | lineno++; |
| 86 | data[count] = '\0'; |
| 87 | |
| 88 | buf->data = data; |
| 89 | buf->alloced = alloc; |
| 90 | } |
| 91 | |
| 92 | /* If we have mmap() and mprotect(), copy the string S just before a |
| 93 | protected page, so that if the demangler runs over the end of the |
| 94 | string we'll get a fault, and return the address of the new string. |
| 95 | If no mmap, or it fails, or it looks too hard, just return S. */ |
| 96 | |
| 97 | #ifdef HAVE_SYS_MMAN_H |
| 98 | #include <sys/mman.h> |
| 99 | #endif |
| 100 | #if defined(MAP_ANON) && ! defined (MAP_ANONYMOUS) |
| 101 | #define MAP_ANONYMOUS MAP_ANON |
| 102 | #endif |
| 103 | |
| 104 | static const char * |
| 105 | protect_end (const char * s) |
| 106 | { |
| 107 | #if defined(HAVE_MMAP) && defined (MAP_ANONYMOUS) |
| 108 | size_t pagesize = getpagesize(); |
| 109 | static char * buf; |
| 110 | size_t s_len = strlen (s); |
| 111 | char * result; |
| 112 | |
| 113 | /* Don't try if S is too long. */ |
| 114 | if (s_len >= pagesize) |
| 115 | return s; |
| 116 | |
| 117 | /* Allocate one page of allocated space followed by an unmapped |
| 118 | page. */ |
| 119 | if (buf == NULL) |
| 120 | { |
| 121 | buf = mmap (NULL, pagesize * 2, PROT_READ | PROT_WRITE, |
| 122 | MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); |
| 123 | if (! buf) |
| 124 | return s; |
| 125 | munmap (buf + pagesize, pagesize); |
| 126 | } |
| 127 | |
| 128 | result = buf + (pagesize - s_len - 1); |
| 129 | memcpy (result, s, s_len + 1); |
| 130 | return result; |
| 131 | #else |
| 132 | return s; |
| 133 | #endif |
| 134 | } |
| 135 | |
| 136 | static void |
| 137 | fail (lineno, opts, in, out, exp) |
| 138 | int lineno; |
| 139 | const char *opts; |
| 140 | const char *in; |
| 141 | const char *out; |
| 142 | const char *exp; |
| 143 | { |
| 144 | printf ("\ |
| 145 | FAIL at line %d, options %s:\n\ |
| 146 | in: %s\n\ |
| 147 | out: %s\n\ |
| 148 | exp: %s\n", |
| 149 | lineno, opts, in, out != NULL ? out : "(null)", exp); |
| 150 | } |
| 151 | |
| 152 | /* The tester operates on a data file consisting of groups of lines: |
| 153 | options |
| 154 | input to be demangled |
| 155 | expected output |
| 156 | |
| 157 | Supported options: |
| 158 | --format=<name> Sets the demangling style. |
| 159 | --no-params There are two lines of expected output; the first |
| 160 | is with DMGL_PARAMS, the second is without it. |
| 161 | --is-v3-ctor Calls is_gnu_v3_mangled_ctor on input; expected |
| 162 | output is an integer representing ctor_kind. |
| 163 | --is-v3-dtor Likewise, but for dtors. |
| 164 | --ret-postfix Passes the DMGL_RET_POSTFIX option |
| 165 | --ret-drop Passes the DMGL_RET_DROP option |
| 166 | |
| 167 | For compatibility, just in case it matters, the options line may be |
| 168 | empty, to mean --format=auto. If it doesn't start with --, then it |
| 169 | may contain only a format name. |
| 170 | */ |
| 171 | |
| 172 | int |
| 173 | main(argc, argv) |
| 174 | int argc; |
| 175 | char **argv; |
| 176 | { |
| 177 | enum demangling_styles style = auto_demangling; |
| 178 | int no_params; |
| 179 | int is_v3_ctor; |
| 180 | int is_v3_dtor; |
| 181 | int ret_postfix, ret_drop; |
| 182 | struct line format; |
| 183 | struct line input; |
| 184 | struct line expect; |
| 185 | char *result; |
| 186 | int failures = 0; |
| 187 | int tests = 0; |
| 188 | |
| 189 | if (argc > 1) |
| 190 | { |
| 191 | fprintf (stderr, "usage: %s < test-set\n", argv[0]); |
| 192 | return 2; |
| 193 | } |
| 194 | |
| 195 | format.data = 0; |
| 196 | input.data = 0; |
| 197 | expect.data = 0; |
| 198 | |
| 199 | for (;;) |
| 200 | { |
| 201 | const char *inp; |
| 202 | |
| 203 | get_line (&format); |
| 204 | if (feof (stdin)) |
| 205 | break; |
| 206 | |
| 207 | get_line (&input); |
| 208 | get_line (&expect); |
| 209 | |
| 210 | inp = protect_end (input.data); |
| 211 | |
| 212 | tests++; |
| 213 | |
| 214 | no_params = 0; |
| 215 | ret_postfix = 0; |
| 216 | ret_drop = 0; |
| 217 | is_v3_ctor = 0; |
| 218 | is_v3_dtor = 0; |
| 219 | if (format.data[0] == '\0') |
| 220 | style = auto_demangling; |
| 221 | else if (format.data[0] != '-') |
| 222 | { |
| 223 | style = cplus_demangle_name_to_style (format.data); |
| 224 | if (style == unknown_demangling) |
| 225 | { |
| 226 | printf ("FAIL at line %d: unknown demangling style %s\n", |
| 227 | lineno, format.data); |
| 228 | failures++; |
| 229 | continue; |
| 230 | } |
| 231 | } |
| 232 | else |
| 233 | { |
| 234 | char *p; |
| 235 | char *opt; |
| 236 | |
| 237 | p = format.data; |
| 238 | while (*p != '\0') |
| 239 | { |
| 240 | char c; |
| 241 | |
| 242 | opt = p; |
| 243 | p += strcspn (p, " \t="); |
| 244 | c = *p; |
| 245 | *p = '\0'; |
| 246 | if (strcmp (opt, "--format") == 0 && c == '=') |
| 247 | { |
| 248 | char *fstyle; |
| 249 | |
| 250 | *p = c; |
| 251 | ++p; |
| 252 | fstyle = p; |
| 253 | p += strcspn (p, " \t"); |
| 254 | c = *p; |
| 255 | *p = '\0'; |
| 256 | style = cplus_demangle_name_to_style (fstyle); |
| 257 | if (style == unknown_demangling) |
| 258 | { |
| 259 | printf ("FAIL at line %d: unknown demangling style %s\n", |
| 260 | lineno, fstyle); |
| 261 | failures++; |
| 262 | continue; |
| 263 | } |
| 264 | } |
| 265 | else if (strcmp (opt, "--no-params") == 0) |
| 266 | no_params = 1; |
| 267 | else if (strcmp (opt, "--is-v3-ctor") == 0) |
| 268 | is_v3_ctor = 1; |
| 269 | else if (strcmp (opt, "--is-v3-dtor") == 0) |
| 270 | is_v3_dtor = 1; |
| 271 | else if (strcmp (opt, "--ret-postfix") == 0) |
| 272 | ret_postfix = 1; |
| 273 | else if (strcmp (opt, "--ret-drop") == 0) |
| 274 | ret_drop = 1; |
| 275 | else |
| 276 | { |
| 277 | printf ("FAIL at line %d: unrecognized option %s\n", |
| 278 | lineno, opt); |
| 279 | failures++; |
| 280 | continue; |
| 281 | } |
| 282 | *p = c; |
| 283 | p += strspn (p, " \t"); |
| 284 | } |
| 285 | } |
| 286 | |
| 287 | if (is_v3_ctor || is_v3_dtor) |
| 288 | { |
| 289 | char buf[20]; |
| 290 | |
| 291 | if (is_v3_ctor) |
| 292 | { |
| 293 | enum gnu_v3_ctor_kinds kc; |
| 294 | |
| 295 | kc = is_gnu_v3_mangled_ctor (inp); |
| 296 | sprintf (buf, "%d", (int) kc); |
| 297 | } |
| 298 | else |
| 299 | { |
| 300 | enum gnu_v3_dtor_kinds kd; |
| 301 | |
| 302 | kd = is_gnu_v3_mangled_dtor (inp); |
| 303 | sprintf (buf, "%d", (int) kd); |
| 304 | } |
| 305 | |
| 306 | if (strcmp (buf, expect.data) != 0) |
| 307 | { |
| 308 | fail (lineno, format.data, input.data, buf, expect.data); |
| 309 | failures++; |
| 310 | } |
| 311 | |
| 312 | continue; |
| 313 | } |
| 314 | |
| 315 | cplus_demangle_set_style (style); |
| 316 | |
| 317 | result = cplus_demangle (inp, (DMGL_PARAMS | DMGL_ANSI | DMGL_TYPES |
| 318 | | (ret_postfix ? DMGL_RET_POSTFIX : 0) |
| 319 | | (ret_drop ? DMGL_RET_DROP : 0))); |
| 320 | |
| 321 | if (result |
| 322 | ? strcmp (result, expect.data) |
| 323 | : strcmp (input.data, expect.data)) |
| 324 | { |
| 325 | fail (lineno, format.data, input.data, result, expect.data); |
| 326 | failures++; |
| 327 | } |
| 328 | free (result); |
| 329 | |
| 330 | if (no_params) |
| 331 | { |
| 332 | get_line (&expect); |
| 333 | result = cplus_demangle (inp, DMGL_ANSI|DMGL_TYPES); |
| 334 | |
| 335 | if (result |
| 336 | ? strcmp (result, expect.data) |
| 337 | : strcmp (input.data, expect.data)) |
| 338 | { |
| 339 | fail (lineno, format.data, input.data, result, expect.data); |
| 340 | failures++; |
| 341 | } |
| 342 | free (result); |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | free (format.data); |
| 347 | free (input.data); |
| 348 | free (expect.data); |
| 349 | |
| 350 | printf ("%s: %d tests, %d failures\n", argv[0], tests, failures); |
| 351 | return failures ? 1 : 0; |
| 352 | } |