diff options
Diffstat (limited to 'string')
| -rw-r--r-- | string/Makefile | 3 | ||||
| -rw-r--r-- | string/test-strncat.c | 298 |
2 files changed, 300 insertions, 1 deletions
diff --git a/string/Makefile b/string/Makefile index f836f598bc..f76758f49e 100644 --- a/string/Makefile +++ b/string/Makefile @@ -49,7 +49,8 @@ o-objects.ob := memcpy.o memset.o memchr.o strop-tests := memchr memcmp memcpy memmove mempcpy memset memccpy \ stpcpy stpncpy strcat strchr strcmp strcpy strcspn \ strlen strncmp strncpy strpbrk strrchr strspn memmem \ - strstr strcasestr strnlen strcasecmp strncasecmp + strstr strcasestr strnlen strcasecmp strncasecmp \ + strncat tests := tester inl-tester noinl-tester testcopy test-ffs \ tst-strlen stratcliff tst-svc tst-inlcall \ bug-strncat1 bug-strspn1 bug-strpbrk1 tst-bswap \ diff --git a/string/test-strncat.c b/string/test-strncat.c new file mode 100644 index 0000000000..f7cf7df229 --- /dev/null +++ b/string/test-strncat.c @@ -0,0 +1,298 @@ +/* Test and measure strncat functions. + Copyright (C) 2011 Free Software Foundation, Inc. + Contributed by Intel Corporation. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +#define TEST_MAIN +#include "test-string.h" + +typedef char *(*proto_t) (char *, const char *, size_t); +char *stupid_strncat (char *, const char *, size_t); +char *simple_strncat (char *, const char *, size_t); + +IMPL (stupid_strncat, 0) +IMPL (strncat, 2) + +char * +stupid_strncat (char *dst, const char *src, size_t n) +{ + char *ret = dst; + while (*dst++ != '\0'); + --dst; + while (n--) + if ( (*dst++ = *src++) == '\0') + return ret; + *dst = '\0'; + return ret; +} + +static void +do_one_test (impl_t *impl, char *dst, const char *src, size_t n) +{ + size_t k = strlen (dst); + if (CALL (impl, dst, src, n) != dst) + { + error (0, 0, "Wrong result in function %s %p != %p", impl->name, + CALL (impl, dst, src, n), dst); + ret = 1; + return; + } + + size_t len = strlen (src); + if (memcmp (dst + k, src, len + 1 > n ? n : len + 1) != 0) + { + error (0, 0, "Incorrect cancatination in function %s", + impl->name); + ret = 1; + return; + } + if (n < len && dst[k + n] != '\0') + { + error (0, 0, "There is no zero in the end of output string in %s", + impl->name); + ret = 1; + return; + } + if (HP_TIMING_AVAIL) + { + hp_timing_t start __attribute ((unused)); + hp_timing_t stop __attribute ((unused)); + hp_timing_t best_time = ~ (hp_timing_t) 0; + size_t i; + + for (i = 0; i < 32; ++i) + { + dst[k] = '\0'; + HP_TIMING_NOW (start); + CALL (impl, dst, src, n); + HP_TIMING_NOW (stop); + HP_TIMING_BEST (best_time, start, stop); + } + + printf ("\t%zd", (size_t) best_time); + } +} + +static void +do_test (size_t align1, size_t align2, size_t len1, size_t len2, + size_t n, int max_char) +{ + size_t i; + char *s1, *s2; + + align1 &= 7; + if (align1 + len1 >= page_size) + return; + if (align1 + n > page_size) + return; + align2 &= 7; + if (align2 + len1 + len2 >= page_size) + return; + if (align2 + len1 + n > page_size) + return; + s1 = (char *) (buf1 + align1); + s2 = (char *) (buf2 + align2); + + for (i = 0; i < len1; ++i) + s1[i] = 32 + 23 * i % (max_char - 32); + s1[len1] = '\0'; + + for (i = 0; i < len2; i++) + s2[i] = 32 + 23 * i % (max_char - 32); + + if (HP_TIMING_AVAIL) + printf ("Length %4zd/%4zd, alignment %2zd/%2zd, N %4zd:", + len1, len2, align1, align2, n); + + FOR_EACH_IMPL (impl, 0) + { + s2[len2] = '\0'; + do_one_test (impl, s2, s1, n); + } + + if (HP_TIMING_AVAIL) + putchar ('\n'); +} + +static void +do_random_tests (void) +{ + size_t i, j, n, align1, align2, len1, len2, N; + unsigned char *p1 = buf1 + page_size - 512; + unsigned char *p2 = buf2 + page_size - 512; + unsigned char *res; + fprintf (stdout, "Number of iterations in random test = %zd\n", + ITERATIONS); + for (n = 0; n < ITERATIONS; n++) + { + N = random () & 255; + align1 = random () & 31; + if (random () & 1) + align2 = random () & 31; + else + align2 = align1 + (random () & 24); + len1 = random () & 511; + if (len1 + align2 > 512) + len2 = random () & 7; + else + len2 = (512 - len1 - align2) * (random () & (1024 * 1024 - 1)) + / (1024 * 1024); + j = align1; + if (align2 + len2 > j) + j = align2 + len2; + if (len1 + j >= 511) + len1 = 510 - j - (random () & 7); + if (len1 >= 512) + len1 = 0; + if (align1 + len1 < 512 - 8) + { + j = 510 - align1 - len1 - (random () & 31); + if (j > 0 && j < 512) + align1 += j; + } + j = len1 + align1 + 64; + if (j > 512) + j = 512; + for (i = 0; i < j; i++) + { + if (i == len1 + align1) + p1[i] = 0; + else + { + p1[i] = random () & 255; + if (i >= align1 && i < len1 + align1 && !p1[i]) + p1[i] = (random () & 127) + 3; + } + } + for (i = 0; i < len2; i++) + { + buf1[i] = random () & 255; + if (!buf1[i]) + buf1[i] = (random () & 127) + 3; + } + buf1[len2] = 0; + + FOR_EACH_IMPL (impl, 1) + { + memset (p2 - 64, '\1', align2 + 64); + memset (p2 + align2 + len2 + 1, '\1', 512 - align2 - len2 - 1); + memcpy (p2 + align2, buf1, len2 + 1); + res = (unsigned char *) CALL (impl, (char *) (p2 + align2), + (char *) (p1 + align1), N); + if (res != p2 + align2) + { + error (0, 0, "Iteration %zd - wrong result in function %s " + "(%zd, %zd, %zd, %zd, %zd) %p != %p", + n, impl->name, align1, align2, len1, len2, N, + res, p2 + align2); + ret = 1; + } + for (j = 0; j < align2 + 64; ++j) + { + if (p2[j - 64] != '\1') + { + error (0, 0, "Iteration %zd - garbage before dst, %s " + "%zd, %zd, %zd, %zd, %zd)", + n, impl->name, align1, align2, len1, len2, N); + ret = 1; + break; + } + } + if (memcmp (p2 + align2, buf1, len2)) + { + error (0, 0, "Iteration %zd - garbage in string before, %s " + "(%zd, %zd, %zd, %zd, %zd)", + n, impl->name, align1, align2, len1, len2, N); + ret = 1; + } + + if ((len1 + 1) > N) + j = align2 + N + 1 + len2; + else + j = align2 + len1 + 1 + len2; + for (; j < 512; ++j) + { + if (p2[j] != '\1') + { + error (0, 0, "Iteration %zd - garbage after, %s " + "(%zd, %zd, %zd, %zd, %zd)", + n, impl->name, align1, align2, len1, len2, N); + ret = 1; + break; + } + } + if (len1 + 1 > N) + { + if (p2[align2 + N + len2] != '\0') + { + error (0, 0, "Iteration %zd - there is no zero at the " + "end of output string, %s (%zd, %zd, %zd, %zd, %zd)", + n, impl->name, align1, align2, len1, len2, N); + ret = 1; + } + } + if (memcmp (p1 + align1, p2 + align2 + len2, + (len1 + 1) > N ? N : len1 + 1)) + { + error (0, 0, "Iteration %zd - different strings, %s " + "(%zd, %zd, %zd, %zd, %zd)", + n, impl->name, align1, align2, len1, len2, N); + ret = 1; + } + } + } +} + +int +main (void) +{ + size_t i, n; + + test_init (); + + printf ("%28s", ""); + FOR_EACH_IMPL (impl, 0) + printf ("\t%s", impl->name); + putchar ('\n'); + + for (n = 2; n <= 2048; n*=4) + { + do_test (0, 2, 2, 2, n, 127); + do_test (0, 0, 4, 4, n, 127); + do_test (4, 0, 4, 4, n, 255); + do_test (0, 0, 8, 8, n, 127); + do_test (0, 8, 8, 8, n, 127); + + for (i = 1; i < 8; ++i) + { + do_test (0, 0, 8 << i, 8 << i, n, 127); + do_test (8 - i, 2 * i, 8 << i, 8 << i, n, 127); + do_test (0, 0, 8 << i, 2 << i, n, 127); + do_test (8 - i, 2 * i, 8 << i, 2 << i, n, 127); + } + + for (i = 1; i < 8; ++i) + { + do_test (i, 2 * i, 8 << i, 1, n, 127); + do_test (2 * i, i, 8 << i, 1, n, 255); + do_test (i, i, 8 << i, 10, n, 127); + } + } + + do_random_tests (); + return ret; +} |