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authorSunil K Pandey <skpgkp2@gmail.com>2023-07-27 16:20:49 -0700
committerDJ Delorie <dj@redhat.com>2023-10-17 18:19:01 -0400
commitb316c9a76903fec1596642b3020b3f939c05b8db (patch)
treeb919130458ce955d8c8a80a445cadba6aa96b902 /string
parent23871292fb25d1bf4d17e73490614ea2a3001d78 (diff)
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Add strlcat/wcslcat testcase.
This patch implements comprehensive tests for strlcat/wcslcat functions. Tests are mostly derived from strncat test suites and modified to incorporate strlcat/wcslcat specifications. Reviewed-by: DJ Delorie <dj@redhat.com>
Diffstat (limited to 'string')
-rw-r--r--string/Makefile1
-rw-r--r--string/tst-strlcat2.c401
2 files changed, 402 insertions, 0 deletions
diff --git a/string/Makefile b/string/Makefile
index cecaa79..040a38d 100644
--- a/string/Makefile
+++ b/string/Makefile
@@ -198,6 +198,7 @@ tests := \
tst-strerror-fail \
tst-strfry \
tst-strlcat \
+ tst-strlcat2 \
tst-strlcpy \
tst-strlcpy2 \
tst-strlen \
diff --git a/string/tst-strlcat2.c b/string/tst-strlcat2.c
new file mode 100644
index 0000000..7476905
--- /dev/null
+++ b/string/tst-strlcat2.c
@@ -0,0 +1,401 @@
+/* Test strlcat functions.
+ Copyright (C) 2023 Free Software Foundation, Inc.
+
+ 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, see
+ <https://www.gnu.org/licenses/>. */
+
+#define TEST_MAIN
+#ifndef WIDE
+# define TEST_NAME "strlcat"
+#else
+# define TEST_NAME "wcslcat"
+#endif /* WIDE */
+#include "test-string.h"
+
+#ifdef WIDE
+# include <wchar.h>
+# define BIG_CHAR WCHAR_MAX
+# define CHAR wchar_t
+# define MEMCMP wmemcmp
+# define MEMCPY wmemcpy
+# define MEMSET wmemset
+# define SIMPLE_STRLCAT simple_wcslcat
+# define SMALL_CHAR 1273
+# define STRLCAT wcslcat
+# define STRLEN wcslen
+# define STRNLEN wcsnlen
+# define UCHAR wchar_t
+#else
+# define BIG_CHAR CHAR_MAX
+# define CHAR char
+# define MEMCMP memcmp
+# define MEMCPY memcpy
+# define MEMSET memset
+# define SMALL_CHAR 127
+# define SIMPLE_STRLCAT simple_strlcat
+# define STRLCAT strlcat
+# define STRLEN strlen
+# define STRNLEN strnlen
+# define UCHAR unsigned char
+#endif /* !WIDE */
+
+/* Naive implementation to verify results. */
+size_t
+SIMPLE_STRLCAT (CHAR *dst, const CHAR *src, size_t n)
+{
+ size_t src_length = STRLEN (src);
+
+ if (n == 0)
+ return src_length;
+
+ size_t dst_length = STRNLEN (dst, n);
+
+ if (dst_length != n)
+ {
+ size_t to_copy = n - dst_length - 1;
+
+ if (to_copy > src_length)
+ to_copy = src_length;
+
+ CHAR *target = dst + dst_length;
+ MEMCPY (target, src, to_copy);
+ target[to_copy] = '\0';
+ }
+ return dst_length + src_length;
+}
+
+IMPL (SIMPLE_STRLCAT, 0)
+IMPL (STRLCAT, 1)
+
+typedef size_t (*proto_t) (CHAR *, const CHAR *, size_t);
+
+static void
+do_one_test (impl_t *impl, CHAR *dst, const CHAR *src,
+ size_t n)
+{
+ size_t exp_ret, func_ret;
+ size_t src_length = STRLEN (src);
+ size_t dst_length = STRNLEN (dst, n);
+
+ if (n == 0)
+ exp_ret = src_length;
+ else
+ exp_ret = src_length + dst_length;
+
+ func_ret = CALL (impl, dst, src, n);
+ if (exp_ret != func_ret)
+ {
+ error (0, 0, "Wrong result in function %s %zd != %zd", impl->name,
+ exp_ret, func_ret);
+ ret = 1;
+ return;
+ }
+
+ if (dst_length != n)
+ {
+ size_t to_copy = n - dst_length - 1;
+ if (to_copy > src_length)
+ to_copy = src_length;
+ if (MEMCMP (dst + dst_length, src, to_copy) != 0)
+ {
+ error (0, 0, "Incorrect concatenation in function %s",
+ impl->name);
+ ret = 1;
+ return;
+ }
+ if (dst[dst_length + to_copy] != '\0')
+ {
+ error (0, 0, "There is no zero in the end of output string in %s",
+ impl->name);
+ ret = 1;
+ return;
+ }
+ }
+ return;
+}
+
+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) * sizeof (CHAR) >= page_size)
+ return;
+ if ((align1 + n) * sizeof (CHAR) > page_size)
+ return;
+ align2 &= 7;
+ if ((align2 + len1 + len2) * sizeof (CHAR) >= page_size)
+ return;
+ if ((align2 + len1 + n) * sizeof (CHAR) > 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_EACH_IMPL (impl, 0)
+ {
+
+ for (i = 0; i < len2; i++)
+ s2[i] = 32 + 23 * i % (max_char - 32);
+ s2[len2] = '\0';
+
+ do_one_test (impl, s2, s1, n);
+ }
+}
+
+static void
+do_overflow_tests (void)
+{
+ size_t i, j, len;
+ const size_t one = 1;
+ CHAR *s1, *s2;
+ uintptr_t s1_addr;
+ s1 = (CHAR *) buf1;
+ s2 = (CHAR *) buf2;
+ s1_addr = (uintptr_t)s1;
+ for (j = 0; j < 200; ++j)
+ s2[j] = 32 + 23 * j % (BIG_CHAR - 32);
+ s2[200] = 0;
+ for (i = 0; i < 750; ++i) {
+ for (j = 0; j < i; ++j)
+ s1[j] = 32 + 23 * j % (BIG_CHAR - 32);
+ s1[i] = '\0';
+
+ FOR_EACH_IMPL (impl, 0)
+ {
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, SIZE_MAX - i);
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, i - s1_addr);
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, -s1_addr - i);
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, SIZE_MAX - s1_addr - i);
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, SIZE_MAX - s1_addr + i);
+ }
+
+ len = 0;
+ for (j = 8 * sizeof(size_t) - 1; j ; --j)
+ {
+ len |= one << j;
+ FOR_EACH_IMPL (impl, 0)
+ {
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, len - i);
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, len + i);
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, len - s1_addr - i);
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, len - s1_addr + i);
+
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, ~len - i);
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, ~len + i);
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, ~len - s1_addr - i);
+ s2[200] = '\0';
+ do_one_test (impl, s2, s1, ~len - s1_addr + i);
+ }
+ }
+ }
+}
+
+static void
+do_random_tests (void)
+{
+ size_t i, j, n, align1, align2, len1, len2, N;
+ UCHAR *p1 = (UCHAR *) (buf1 + page_size) - 1024;
+ UCHAR *p2 = (UCHAR *) (buf2 + page_size) - 1024;
+ UCHAR *p3 = (UCHAR *) buf1;
+ size_t res;
+ fprintf (stdout, "Number of iterations in random test = %zd\n",
+ ITERATIONS);
+ for (n = 0; n < ITERATIONS; n++)
+ {
+ N = random () & 1023;
+ align1 = random () & 255;
+ align2 = random () & 255;
+ len1 = random () & 255;
+ len2 = random () & 255;
+
+ for (i = 0; i < len1; i++)
+ {
+ p1[align1 + i] = random () & BIG_CHAR;
+ if (!p1[align1 + i])
+ p1[align1 + i] = (random () & SMALL_CHAR) + 3;
+ }
+ p1[align1 + len1] = 0;
+
+ for (i = 0; i < len2; i++)
+ {
+ p3[i] = random () & BIG_CHAR;
+ if (!p3[i])
+ p3[i] = (random () & SMALL_CHAR) + 3;
+ }
+ p3[len2] = 0;
+
+ size_t exp_ret;
+ size_t src_length = STRLEN ((CHAR *) (p1 + align1));
+ size_t dst_length = STRNLEN ((CHAR *) (p3), N);
+
+ if (N == 0)
+ exp_ret = src_length;
+ else
+ exp_ret = src_length + dst_length;
+
+ FOR_EACH_IMPL (impl, 1)
+ {
+ MEMSET (p2 - 64, '\1', align2 + 64);
+ MEMSET (p2 + align2 + len2 + 1, '\1', 1024 - align2 - len2 - 1);
+ MEMCPY (p2 + align2, p3, len2 + 1);
+ res = CALL (impl, (CHAR *) (p2 + align2),
+ (CHAR *) (p1 + align1), N);
+ if (res != exp_ret)
+ {
+ error (0, 0, "Iteration %zd - wrong result in function %s "
+ "(%zd, %zd, %zd, %zd, %zd) %zd != %zd",
+ n, impl->name, align1, align2, len1, len2, N,
+ res, exp_ret);
+ 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, p3, 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 (N > len2 + 1)
+ {
+ j = (N - len2 - 1 >= len1) ? len1 : N - len2 - 1;
+ if (MEMCMP (p2 + align2 + len2, p1 + align1, j))
+ {
+ error (0, 0, "Iteration %zd - different strings, %s "
+ "(%zd, %zd, %zd, %zd)", n, impl->name, align1,
+ align2, len2, j);
+ ret = 1;
+ }
+
+ if (p2[align2 + len2 + j] != '\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;
+ }
+
+ for (j = j + align2 + len2 + 1; j < 1024; ++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;
+ }
+ }
+ }
+ else
+ {
+ if (p2[align2 + len2] != '\0')
+ {
+ error (0, 0, "Iteration %zd - destination modified, %s "
+ "(%zd, %zd, %zd, %zd, %zd)",
+ n, impl->name, align1, align2, len1, len2, N);
+ ret = 1;
+ }
+ }
+ }
+ }
+}
+
+int
+test_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, SMALL_CHAR);
+ do_test (0, 0, 4, 4, n, SMALL_CHAR);
+ do_test (4, 0, 4, 4, n, BIG_CHAR);
+ do_test (0, 0, 8, 8, n, SMALL_CHAR);
+ do_test (0, 8, 8, 8, n, SMALL_CHAR);
+
+ do_test (0, 2, 2, 2, SIZE_MAX, SMALL_CHAR);
+ do_test (0, 0, 4, 4, SIZE_MAX, SMALL_CHAR);
+ do_test (4, 0, 4, 4, SIZE_MAX, BIG_CHAR);
+ do_test (0, 0, 8, 8, SIZE_MAX, SMALL_CHAR);
+ do_test (0, 8, 8, 8, SIZE_MAX, SMALL_CHAR);
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (0, 0, 8 << i, 8 << i, n, SMALL_CHAR);
+ do_test (8 - i, 2 * i, 8 << i, 8 << i, n, SMALL_CHAR);
+ do_test (0, 0, 8 << i, 2 << i, n, SMALL_CHAR);
+ do_test (8 - i, 2 * i, 8 << i, 2 << i, n, SMALL_CHAR);
+
+ do_test (0, 0, 8 << i, 8 << i, SIZE_MAX, SMALL_CHAR);
+ do_test (8 - i, 2 * i, 8 << i, 8 << i, SIZE_MAX, SMALL_CHAR);
+ do_test (0, 0, 8 << i, 2 << i, SIZE_MAX, SMALL_CHAR);
+ do_test (8 - i, 2 * i, 8 << i, 2 << i, SIZE_MAX, SMALL_CHAR);
+ }
+
+ for (i = 1; i < 8; ++i)
+ {
+ do_test (i, 2 * i, 8 << i, 1, n, SMALL_CHAR);
+ do_test (2 * i, i, 8 << i, 1, n, BIG_CHAR);
+ do_test (i, i, 8 << i, 10, n, SMALL_CHAR);
+
+ do_test (i, 2 * i, 8 << i, 1, SIZE_MAX, SMALL_CHAR);
+ do_test (2 * i, i, 8 << i, 1, SIZE_MAX, BIG_CHAR);
+ do_test (i, i, 8 << i, 10, SIZE_MAX, SMALL_CHAR);
+ }
+ }
+
+ do_random_tests ();
+ do_overflow_tests ();
+ return ret;
+}
+
+#include <support/test-driver.c>