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-rw-r--r--string/Makefile3
-rw-r--r--string/test-strncat.c298
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;
+}
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