test/test/test_cmdline_num.c

   1 /*-
   2  *   BSD LICENSE
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  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
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  19  *       from this software without specific prior written permission.
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  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <string.h>
  36 #include <inttypes.h>
  37
  38 #include <rte_string_fns.h>
  39
  40 #include <cmdline_parse.h>
  41 #include <cmdline_parse_num.h>
  42
  43 #include "test_cmdline.h"
  44
  45 struct num_unsigned_str {
  46         const char * str;
  47         uint64_t result;
  48 };
  49
  50 struct num_signed_str {
  51         const char * str;
  52         int64_t result;
  53 };
  54
  55 const struct num_unsigned_str num_valid_positive_strs[] = {
  56                 /* decimal positive */
  57                 {"0", 0 },
  58                 {"127", INT8_MAX },
  59                 {"128", INT8_MAX + 1 },
  60                 {"255", UINT8_MAX },
  61                 {"256", UINT8_MAX + 1 },
  62                 {"32767", INT16_MAX },
  63                 {"32768", INT16_MAX + 1 },
  64                 {"65535", UINT16_MAX },
  65                 {"65536", UINT16_MAX + 1 },
  66                 {"2147483647", INT32_MAX },
  67                 {"2147483648", INT32_MAX + 1U },
  68                 {"4294967295", UINT32_MAX },
  69                 {"4294967296", UINT32_MAX + 1ULL },
  70                 {"9223372036854775807", INT64_MAX },
  71                 {"9223372036854775808", INT64_MAX + 1ULL},
  72                 {"18446744073709551615", UINT64_MAX },
  73                 /* hexadecimal (no leading zeroes) */
  74                 {"0x0", 0 },
  75                 {"0x7F", INT8_MAX },
  76                 {"0x80", INT8_MAX + 1 },
  77                 {"0xFF", UINT8_MAX },
  78                 {"0x100", UINT8_MAX + 1 },
  79                 {"0x7FFF", INT16_MAX },
  80                 {"0x8000", INT16_MAX + 1 },
  81                 {"0xFFFF", UINT16_MAX },
  82                 {"0x10000", UINT16_MAX + 1 },
  83                 {"0x7FFFFFFF", INT32_MAX },
  84                 {"0x80000000", INT32_MAX + 1U },
  85                 {"0xFFFFFFFF", UINT32_MAX },
  86                 {"0x100000000", UINT32_MAX + 1ULL },
  87                 {"0x7FFFFFFFFFFFFFFF", INT64_MAX },
  88                 {"0x8000000000000000", INT64_MAX + 1ULL},
  89                 {"0xFFFFFFFFFFFFFFFF", UINT64_MAX },
  90                 /* hexadecimal (with leading zeroes) */
  91                 {"0x00", 0 },
  92                 {"0x7F", INT8_MAX },
  93                 {"0x80", INT8_MAX + 1 },
  94                 {"0xFF", UINT8_MAX },
  95                 {"0x0100", UINT8_MAX + 1 },
  96                 {"0x7FFF", INT16_MAX },
  97                 {"0x8000", INT16_MAX + 1 },
  98                 {"0xFFFF", UINT16_MAX },
  99                 {"0x00010000", UINT16_MAX + 1 },
 100                 {"0x7FFFFFFF", INT32_MAX },
 101                 {"0x80000000", INT32_MAX + 1U },
 102                 {"0xFFFFFFFF", UINT32_MAX },
 103                 {"0x0000000100000000", UINT32_MAX + 1ULL },
 104                 {"0x7FFFFFFFFFFFFFFF", INT64_MAX },
 105                 {"0x8000000000000000", INT64_MAX + 1ULL},
 106                 {"0xFFFFFFFFFFFFFFFF", UINT64_MAX },
 107                 /* check all characters */
 108                 {"0x1234567890ABCDEF", 0x1234567890ABCDEFULL },
 109                 {"0x1234567890abcdef", 0x1234567890ABCDEFULL },
 110                 /* binary (no leading zeroes) */
 111                 {"0b0", 0 },
 112                 {"0b1111111", INT8_MAX },
 113                 {"0b10000000", INT8_MAX + 1 },
 114                 {"0b11111111", UINT8_MAX },
 115                 {"0b100000000", UINT8_MAX + 1 },
 116                 {"0b111111111111111", INT16_MAX },
 117                 {"0b1000000000000000", INT16_MAX + 1 },
 118                 {"0b1111111111111111", UINT16_MAX },
 119                 {"0b10000000000000000", UINT16_MAX + 1 },
 120                 {"0b1111111111111111111111111111111", INT32_MAX },
 121                 {"0b10000000000000000000000000000000", INT32_MAX + 1U },
 122                 {"0b11111111111111111111111111111111", UINT32_MAX },
 123                 {"0b100000000000000000000000000000000", UINT32_MAX + 1ULL },
 124                 {"0b111111111111111111111111111111111111111111111111111111111111111",
 125                                 INT64_MAX },
 126                 {"0b1000000000000000000000000000000000000000000000000000000000000000",
 127                                 INT64_MAX + 1ULL},
 128                 {"0b1111111111111111111111111111111111111111111111111111111111111111",
 129                                 UINT64_MAX },
 130                 /* binary (with leading zeroes) */
 131                 {"0b01111111", INT8_MAX },
 132                 {"0b0000000100000000", UINT8_MAX + 1 },
 133                 {"0b0111111111111111", INT16_MAX },
 134                 {"0b00000000000000010000000000000000", UINT16_MAX + 1 },
 135                 {"0b01111111111111111111111111111111", INT32_MAX },
 136                 {"0b0000000000000000000000000000000100000000000000000000000000000000",
 137                                 UINT32_MAX + 1ULL },
 138                 {"0b0111111111111111111111111111111111111111111111111111111111111111",
 139                                 INT64_MAX },
 140                 /* octal */
 141                 {"00", 0 },
 142                 {"0177", INT8_MAX },
 143                 {"0200", INT8_MAX + 1 },
 144                 {"0377", UINT8_MAX },
 145                 {"0400", UINT8_MAX + 1 },
 146                 {"077777", INT16_MAX },
 147                 {"0100000", INT16_MAX + 1 },
 148                 {"0177777", UINT16_MAX },
 149                 {"0200000", UINT16_MAX + 1 },
 150                 {"017777777777", INT32_MAX },
 151                 {"020000000000", INT32_MAX + 1U },
 152                 {"037777777777", UINT32_MAX },
 153                 {"040000000000", UINT32_MAX + 1ULL },
 154                 {"0777777777777777777777", INT64_MAX },
 155                 {"01000000000000000000000", INT64_MAX + 1ULL},
 156                 {"01777777777777777777777", UINT64_MAX },
 157                 /* check all numbers */
 158                 {"012345670", 012345670 },
 159                 {"076543210", 076543210 },
 160 };
 161
 162 const struct num_signed_str num_valid_negative_strs[] = {
 163                 /* deciman negative */
 164                 {"-128", INT8_MIN },
 165                 {"-129", INT8_MIN - 1 },
 166                 {"-32768", INT16_MIN },
 167                 {"-32769", INT16_MIN - 1 },
 168                 {"-2147483648", INT32_MIN },
 169                 {"-2147483649", INT32_MIN - 1LL },
 170                 {"-9223372036854775808", INT64_MIN },
 171 };
 172
 173 const struct num_unsigned_str num_garbage_positive_strs[] = {
 174                 /* valid strings with garbage on the end, should still be valid */
 175                 /* decimal */
 176                 {"9223372036854775807\0garbage", INT64_MAX },
 177                 {"9223372036854775807\tgarbage", INT64_MAX },
 178                 {"9223372036854775807\rgarbage", INT64_MAX },
 179                 {"9223372036854775807\ngarbage", INT64_MAX },
 180                 {"9223372036854775807#garbage", INT64_MAX },
 181                 {"9223372036854775807 garbage", INT64_MAX },
 182                 /* hex */
 183                 {"0x7FFFFFFFFFFFFFFF\0garbage", INT64_MAX },
 184                 {"0x7FFFFFFFFFFFFFFF\tgarbage", INT64_MAX },
 185                 {"0x7FFFFFFFFFFFFFFF\rgarbage", INT64_MAX },
 186                 {"0x7FFFFFFFFFFFFFFF\ngarbage", INT64_MAX },
 187                 {"0x7FFFFFFFFFFFFFFF#garbage", INT64_MAX },
 188                 {"0x7FFFFFFFFFFFFFFF garbage", INT64_MAX },
 189                 /* binary */
 190                 {"0b1111111111111111111111111111111\0garbage", INT32_MAX },
 191                 {"0b1111111111111111111111111111111\rgarbage", INT32_MAX },
 192                 {"0b1111111111111111111111111111111\tgarbage", INT32_MAX },
 193                 {"0b1111111111111111111111111111111\ngarbage", INT32_MAX },
 194                 {"0b1111111111111111111111111111111#garbage", INT32_MAX },
 195                 {"0b1111111111111111111111111111111 garbage", INT32_MAX },
 196                 /* octal */
 197                 {"01777777777777777777777\0garbage", UINT64_MAX },
 198                 {"01777777777777777777777\rgarbage", UINT64_MAX },
 199                 {"01777777777777777777777\tgarbage", UINT64_MAX },
 200                 {"01777777777777777777777\ngarbage", UINT64_MAX },
 201                 {"01777777777777777777777#garbage", UINT64_MAX },
 202                 {"01777777777777777777777 garbage", UINT64_MAX },
 203 };
 204
 205 const struct num_signed_str num_garbage_negative_strs[] = {
 206                 /* valid strings with garbage on the end, should still be valid */
 207                 {"-9223372036854775808\0garbage", INT64_MIN },
 208                 {"-9223372036854775808\rgarbage", INT64_MIN },
 209                 {"-9223372036854775808\tgarbage", INT64_MIN },
 210                 {"-9223372036854775808\ngarbage", INT64_MIN },
 211                 {"-9223372036854775808#garbage", INT64_MIN },
 212                 {"-9223372036854775808 garbage", INT64_MIN },
 213 };
 214
 215 const char * num_invalid_strs[] = {
 216                 "18446744073709551616", /* out of range unsigned */
 217                 "-9223372036854775809", /* out of range negative signed */
 218                 "0x10000000000000000", /* out of range hex */
 219                 /* out of range binary */
 220                 "0b10000000000000000000000000000000000000000000000000000000000000000",
 221                 "020000000000000000000000", /* out of range octal */
 222                 /* wrong chars */
 223                 "0123456239",
 224                 "0x1234580AGE",
 225                 "0b0111010101g001",
 226                 "0b01110101017001",
 227                 /* false negative numbers */
 228                 "-12345F623",
 229                 "-0x1234580A",
 230                 "-0b0111010101",
 231                 /* too long (128+ chars) */
 232                 "0b1111000011110000111100001111000011110000111100001111000011110000"
 233                   "1111000011110000111100001111000011110000111100001111000011110000",
 234                 "1E3",
 235                 "0A",
 236                 "-B",
 237                 "+4",
 238                 "1.23G",
 239                 "",
 240                 " ",
 241                 "#",
 242                 "\r",
 243                 "\t",
 244                 "\n",
 245                 "\0",
 246 };
 247
 248 #define NUM_POSITIVE_STRS_SIZE \
 249         (sizeof(num_valid_positive_strs) / sizeof(num_valid_positive_strs[0]))
 250 #define NUM_NEGATIVE_STRS_SIZE \
 251         (sizeof(num_valid_negative_strs) / sizeof(num_valid_negative_strs[0]))
 252 #define NUM_POSITIVE_GARBAGE_STRS_SIZE \
 253         (sizeof(num_garbage_positive_strs) / sizeof(num_garbage_positive_strs[0]))
 254 #define NUM_NEGATIVE_GARBAGE_STRS_SIZE \
 255         (sizeof(num_garbage_negative_strs) / sizeof(num_garbage_negative_strs[0]))
 256 #define NUM_INVALID_STRS_SIZE \
 257         (sizeof(num_invalid_strs) / sizeof(num_invalid_strs[0]))
 258
 259
 260
 261 static int
 262 can_parse_unsigned(uint64_t expected_result, enum cmdline_numtype type)
 263 {
 264         switch (type) {
 265         case UINT8:
 266                 if (expected_result > UINT8_MAX)
 267                         return 0;
 268                 break;
 269         case UINT16:
 270                 if (expected_result > UINT16_MAX)
 271                         return 0;
 272                 break;
 273         case UINT32:
 274                 if (expected_result > UINT32_MAX)
 275                         return 0;
 276                 break;
 277         case INT8:
 278                 if (expected_result > INT8_MAX)
 279                         return 0;
 280                 break;
 281         case INT16:
 282                 if (expected_result > INT16_MAX)
 283                         return 0;
 284                 break;
 285         case INT32:
 286                 if (expected_result > INT32_MAX)
 287                         return 0;
 288                 break;
 289         case INT64:
 290                 if (expected_result > INT64_MAX)
 291                         return 0;
 292                 break;
 293         default:
 294                 return 1;
 295         }
 296         return 1;
 297 }
 298
 299 static int
 300 can_parse_signed(int64_t expected_result, enum cmdline_numtype type)
 301 {
 302         switch (type) {
 303         case UINT8:
 304                 if (expected_result > UINT8_MAX || expected_result < 0)
 305                         return 0;
 306                 break;
 307         case UINT16:
 308                 if (expected_result > UINT16_MAX || expected_result < 0)
 309                         return 0;
 310                 break;
 311         case UINT32:
 312                 if (expected_result > UINT32_MAX || expected_result < 0)
 313                         return 0;
 314                 break;
 315         case UINT64:
 316                 if (expected_result < 0)
 317                         return 0;
 318         case INT8:
 319                 if (expected_result > INT8_MAX || expected_result < INT8_MIN)
 320                         return 0;
 321                 break;
 322         case INT16:
 323                 if (expected_result > INT16_MAX || expected_result < INT16_MIN)
 324                         return 0;
 325                 break;
 326         case INT32:
 327                 if (expected_result > INT32_MAX || expected_result < INT32_MIN)
 328                         return 0;
 329                 break;
 330         default:
 331                 return 1;
 332         }
 333         return 1;
 334 }
 335
 336 /* test invalid parameters */
 337 int
 338 test_parse_num_invalid_param(void)
 339 {
 340         char buf[CMDLINE_TEST_BUFSIZE];
 341         uint32_t result;
 342         cmdline_parse_token_num_t token;
 343         int ret = 0;
 344
 345         /* set up a token */
 346         token.num_data.type = UINT32;
 347
 348         /* copy string to buffer */
 349         snprintf(buf, sizeof(buf), "%s",
 350                         num_valid_positive_strs[0].str);
 351
 352         /* try all null */
 353         ret = cmdline_parse_num(NULL, NULL, NULL, 0);
 354         if (ret != -1) {
 355                 printf("Error: parser accepted null parameters!\n");
 356                 return -1;
 357         }
 358
 359         /* try null token */
 360         ret = cmdline_parse_num(NULL, buf, (void*)&result, sizeof(result));
 361         if (ret != -1) {
 362                 printf("Error: parser accepted null token!\n");
 363                 return -1;
 364         }
 365
 366         /* try null buf */
 367         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*)&token, NULL,
 368                 (void*)&result, sizeof(result));
 369         if (ret != -1) {
 370                 printf("Error: parser accepted null string!\n");
 371                 return -1;
 372         }
 373
 374         /* try null result */
 375         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*)&token, buf,
 376                 NULL, 0);
 377         if (ret == -1) {
 378                 printf("Error: parser rejected null result!\n");
 379                 return -1;
 380         }
 381
 382         /* test help function */
 383         memset(&buf, 0, sizeof(buf));
 384
 385         /* try all null */
 386         ret = cmdline_get_help_num(NULL, NULL, 0);
 387         if (ret != -1) {
 388                 printf("Error: help function accepted null parameters!\n");
 389                 return -1;
 390         }
 391
 392         /* try null token */
 393         ret = cmdline_get_help_num(NULL, buf, sizeof(buf));
 394         if (ret != -1) {
 395                 printf("Error: help function accepted null token!\n");
 396                 return -1;
 397         }
 398
 399         /* coverage! */
 400         ret = cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token, buf, sizeof(buf));
 401         if (ret < 0) {
 402                 printf("Error: help function failed with valid parameters!\n");
 403                 return -1;
 404         }
 405
 406         return 0;
 407 }
 408 /* test valid parameters but invalid data */
 409 int
 410 test_parse_num_invalid_data(void)
 411 {
 412         enum cmdline_numtype type;
 413         int ret = 0;
 414         unsigned i;
 415         char buf[CMDLINE_TEST_BUFSIZE];
 416         uint64_t result; /* pick largest buffer */
 417         cmdline_parse_token_num_t token;
 418
 419         /* cycle through all possible parsed types */
 420         for (type = UINT8; type <= INT64; type++) {
 421                 token.num_data.type = type;
 422
 423                 /* test full strings */
 424                 for (i = 0; i < NUM_INVALID_STRS_SIZE; i++) {
 425
 426                         memset(&result, 0, sizeof(uint64_t));
 427                         memset(&buf, 0, sizeof(buf));
 428
 429                         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*)&token,
 430                                 num_invalid_strs[i], (void*)&result, sizeof(result));
 431                         if (ret != -1) {
 432                                 /* get some info about what we are trying to parse */
 433                                 cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 434                                                 buf, sizeof(buf));
 435
 436                                 printf("Error: parsing %s as %s succeeded!\n",
 437                                                 num_invalid_strs[i], buf);
 438                                 return -1;
 439                         }
 440                 }
 441         }
 442         return 0;
 443 }
 444
 445 /* test valid parameters and data */
 446 int
 447 test_parse_num_valid(void)
 448 {
 449         int ret = 0;
 450         enum cmdline_numtype type;
 451         unsigned i;
 452         char buf[CMDLINE_TEST_BUFSIZE];
 453         uint64_t result;
 454         cmdline_parse_token_num_t token;
 455
 456         /** valid strings **/
 457
 458         /* cycle through all possible parsed types */
 459         for (type = UINT8; type <= INT64; type++) {
 460                 token.num_data.type = type;
 461
 462                 /* test positive strings */
 463                 for (i = 0; i < NUM_POSITIVE_STRS_SIZE; i++) {
 464                         result = 0;
 465                         memset(&buf, 0, sizeof(buf));
 466
 467                         cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 468                                         buf, sizeof(buf));
 469
 470                         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*) &token,
 471                                 num_valid_positive_strs[i].str,
 472                                 (void*)&result, sizeof(result));
 473
 474                         /* if it should have passed but didn't, or if it should have failed but didn't */
 475                         if ((ret < 0) == (can_parse_unsigned(num_valid_positive_strs[i].result, type) > 0)) {
 476                                 printf("Error: parser behaves unexpectedly when parsing %s as %s!\n",
 477                                                 num_valid_positive_strs[i].str, buf);
 478                                 return -1;
 479                         }
 480                         /* check if result matches what it should have matched
 481                          * since unsigned numbers don't care about number of bits, we can just convert
 482                          * everything to uint64_t without any worries. */
 483                         if (ret > 0 && num_valid_positive_strs[i].result != result) {
 484                                 printf("Error: parsing %s as %s failed: result mismatch!\n",
 485                                                 num_valid_positive_strs[i].str, buf);
 486                                 return -1;
 487                         }
 488                 }
 489
 490                 /* test negative strings */
 491                 for (i = 0; i < NUM_NEGATIVE_STRS_SIZE; i++) {
 492                         result = 0;
 493                         memset(&buf, 0, sizeof(buf));
 494
 495                         cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 496                                         buf, sizeof(buf));
 497
 498                         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*) &token,
 499                                 num_valid_negative_strs[i].str,
 500                                 (void*)&result, sizeof(result));
 501
 502                         /* if it should have passed but didn't, or if it should have failed but didn't */
 503                         if ((ret < 0) == (can_parse_signed(num_valid_negative_strs[i].result, type) > 0)) {
 504                                 printf("Error: parser behaves unexpectedly when parsing %s as %s!\n",
 505                                                 num_valid_negative_strs[i].str, buf);
 506                                 return -1;
 507                         }
 508                         /* check if result matches what it should have matched
 509                          * the result is signed in this case, so we have to account for that */
 510                         if (ret > 0) {
 511                                 /* detect negative */
 512                                 switch (type) {
 513                                 case INT8:
 514                                         result = (int8_t) result;
 515                                         break;
 516                                 case INT16:
 517                                         result = (int16_t) result;
 518                                         break;
 519                                 case INT32:
 520                                         result = (int32_t) result;
 521                                         break;
 522                                 default:
 523                                         break;
 524                                 }
 525                                 if (num_valid_negative_strs[i].result == (int64_t) result)
 526                                         continue;
 527                                 printf("Error: parsing %s as %s failed: result mismatch!\n",
 528                                                 num_valid_negative_strs[i].str, buf);
 529                                 return -1;
 530                         }
 531                 }
 532         }
 533
 534         /** garbage strings **/
 535
 536         /* cycle through all possible parsed types */
 537         for (type = UINT8; type <= INT64; type++) {
 538                 token.num_data.type = type;
 539
 540                 /* test positive garbage strings */
 541                 for (i = 0; i < NUM_POSITIVE_GARBAGE_STRS_SIZE; i++) {
 542                         result = 0;
 543                         memset(&buf, 0, sizeof(buf));
 544
 545                         cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 546                                         buf, sizeof(buf));
 547
 548                         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*) &token,
 549                                 num_garbage_positive_strs[i].str,
 550                                 (void*)&result, sizeof(result));
 551
 552                         /* if it should have passed but didn't, or if it should have failed but didn't */
 553                         if ((ret < 0) == (can_parse_unsigned(num_garbage_positive_strs[i].result, type) > 0)) {
 554                                 printf("Error: parser behaves unexpectedly when parsing %s as %s!\n",
 555                                                 num_garbage_positive_strs[i].str, buf);
 556                                 return -1;
 557                         }
 558                         /* check if result matches what it should have matched
 559                          * since unsigned numbers don't care about number of bits, we can just convert
 560                          * everything to uint64_t without any worries. */
 561                         if (ret > 0 && num_garbage_positive_strs[i].result != result) {
 562                                 printf("Error: parsing %s as %s failed: result mismatch!\n",
 563                                                 num_garbage_positive_strs[i].str, buf);
 564                                 return -1;
 565                         }
 566                 }
 567
 568                 /* test negative strings */
 569                 for (i = 0; i < NUM_NEGATIVE_GARBAGE_STRS_SIZE; i++) {
 570                         result = 0;
 571                         memset(&buf, 0, sizeof(buf));
 572
 573                         cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 574                                         buf, sizeof(buf));
 575
 576                         ret = cmdline_parse_num((cmdline_parse_token_hdr_t*) &token,
 577                                 num_garbage_negative_strs[i].str,
 578                                 (void*)&result, sizeof(result));
 579
 580                         /* if it should have passed but didn't, or if it should have failed but didn't */
 581                         if ((ret < 0) == (can_parse_signed(num_garbage_negative_strs[i].result, type) > 0)) {
 582                                 printf("Error: parser behaves unexpectedly when parsing %s as %s!\n",
 583                                                 num_garbage_negative_strs[i].str, buf);
 584                                 return -1;
 585                         }
 586                         /* check if result matches what it should have matched
 587                          * the result is signed in this case, so we have to account for that */
 588                         if (ret > 0) {
 589                                 /* detect negative */
 590                                 switch (type) {
 591                                 case INT8:
 592                                         if (result & (INT8_MAX + 1))
 593                                                 result |= 0xFFFFFFFFFFFFFF00ULL;
 594                                         break;
 595                                 case INT16:
 596                                         if (result & (INT16_MAX + 1))
 597                                                 result |= 0xFFFFFFFFFFFF0000ULL;
 598                                         break;
 599                                 case INT32:
 600                                         if (result & (INT32_MAX + 1ULL))
 601                                                 result |= 0xFFFFFFFF00000000ULL;
 602                                         break;
 603                                 default:
 604                                         break;
 605                                 }
 606                                 if (num_garbage_negative_strs[i].result == (int64_t) result)
 607                                         continue;
 608                                 printf("Error: parsing %s as %s failed: result mismatch!\n",
 609                                                 num_garbage_negative_strs[i].str, buf);
 610                                 return -1;
 611                         }
 612                 }
 613         }
 614
 615         memset(&buf, 0, sizeof(buf));
 616
 617         /* coverage! */
 618         cmdline_get_help_num((cmdline_parse_token_hdr_t*)&token,
 619                         buf, sizeof(buf));
 620
 621         return 0;
 622 }