Page MenuHomeFreeBSD
Files F144478889

D42925.diff
No OneTemporary
Actions

D42925.diff
View Options

diff --git a/lib/libc/tests/string/Makefile b/lib/libc/tests/string/Makefile
--- a/lib/libc/tests/string/Makefile
+++ b/lib/libc/tests/string/Makefile
@@ -11,6 +11,7 @@
ATF_TESTS_C+= flsll_test
ATF_TESTS_C+= memccpy_test
ATF_TESTS_C+= memcmp_test
+ATF_TESTS_C+= memrchr_test
ATF_TESTS_C+= memset_s_test
ATF_TESTS_C+= strncmp_test
ATF_TESTS_C+= stpncpy_test
diff --git a/lib/libc/tests/string/memrchr_test.c b/lib/libc/tests/string/memrchr_test.c
new file mode 100644
--- /dev/null
+++ b/lib/libc/tests/string/memrchr_test.c
@@ -0,0 +1,116 @@
+/*-
+ * SPDX-License-Identifier: BSD-2-Clause
+ *
+ * Copyright (c) 2023 Robert Clausecker
+ */
+
+#include <sys/cdefs.h>
+
+#include <dlfcn.h>
+#include <limits.h>
+#include <string.h>
+
+#include <atf-c.h>
+
+static void *(*memrchr_fn)(const void *, int, size_t);
+
+ATF_TC_WITHOUT_HEAD(null);
+ATF_TC_BODY(null, tc)
+{
+ ATF_CHECK_EQ(memrchr_fn(NULL, 42, 0), NULL);
+}
+
+ATF_TC_WITHOUT_HEAD(not_found);
+ATF_TC_BODY(not_found, tc)
+{
+ size_t i, j;
+ char buf[1+15+64+1]; /* offset [0..15] + 64 buffer bytes + sentinels */
+
+ buf[0] = 'X';
+ memset(buf + 1, '-', sizeof(buf) - 1);
+
+ for (i = 0; i < 16; i++)
+ for (j = 0; j < 64; j++) {
+ buf[i + j + 1] = 'X';
+ ATF_CHECK_EQ(memrchr_fn(buf + i + 1, 'X', j), NULL);
+ buf[i + j + 1] = '-';
+ }
+}
+
+static void
+do_found_test(char buf[], size_t len, size_t first, size_t second)
+{
+ /* invariant: first <= second */
+
+ buf[first] = 'X';
+ buf[second] = 'X';
+ ATF_CHECK_EQ(memrchr_fn(buf, 'X', len), buf + second);
+ buf[first] = '-';
+ buf[second] = '-';
+}
+
+ATF_TC_WITHOUT_HEAD(found);
+ATF_TC_BODY(found, tc)
+{
+ size_t i, j, k, l;
+ char buf[1+15+64+1];
+
+ buf[0] = 'X';
+ memset(buf + 1, '-', sizeof(buf) - 1);
+
+ for (i = 0; i < 16; i++)
+ for (j = 0; j < 64; j++)
+ for (k = 0; k < j; k++)
+ for (l = 0; l <= k; l++) {
+ buf[i + j + 1] = 'X';
+ do_found_test(buf + i + 1, j, l, k);
+ buf[i + j + 1] = '-';
+ }
+}
+
+/* check that the right character is found */
+static void
+do_values_test(unsigned char buf[], size_t len, size_t i, int c)
+{
+ /* sentinels */
+ buf[-1] = c;
+ buf[len] = c;
+ memset(buf, c + 1, len);
+
+ if (i < len) {
+ buf[i] = c;
+ ATF_CHECK_EQ(memrchr_fn(buf, c, len), buf + i);
+ } else
+ ATF_CHECK_EQ(memrchr_fn(buf, c, len), NULL);
+}
+
+ATF_TC_WITHOUT_HEAD(values);
+ATF_TC_BODY(values, tc)
+{
+ size_t i, j, k;
+ int c;
+ unsigned char buf[1+15+64+1];
+
+ for (i = 0; i < 16; i++)
+ for (j = 0; j < 64; j++)
+ for (k = 0; k <= j; k++)
+ for (c = 0; c <= UCHAR_MAX; c++)
+ do_values_test(buf + i + 1, j, k, c);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+ void *dl_handle;
+
+ dl_handle = dlopen(NULL, RTLD_LAZY);
+ memrchr_fn = dlsym(dl_handle, "test_memrchr");
+ if (memrchr_fn == NULL)
+ memrchr_fn = memrchr;
+
+ ATF_TP_ADD_TC(tp, null);
+ ATF_TP_ADD_TC(tp, not_found);
+ ATF_TP_ADD_TC(tp, found);
+ ATF_TP_ADD_TC(tp, values);
+
+ return (atf_no_error());
+}

File Metadata

Mime Type
text/plain
Expires
Mon, Feb 9, 4:09 PM (1 h, 52 m)
Storage Engine
blob
Storage Format
Raw Data
Storage Handle
28596547
Default Alt Text
D42925.diff (2 KB)

Event Timeline