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-rw-r--r--test/string/tst-strlen.c45
1 files changed, 45 insertions, 0 deletions
diff --git a/test/string/tst-strlen.c b/test/string/tst-strlen.c
new file mode 100644
index 000000000..a1e115927
--- /dev/null
+++ b/test/string/tst-strlen.c
@@ -0,0 +1,45 @@
+/* Make sure we don't test the optimized inline functions if we want to
+ test the real implementation. */
+#undef __USE_STRING_INLINES
+
+#include <stdio.h>
+#include <string.h>
+
+int
+main(int argc, char *argv[])
+{
+ static const size_t lens[] = { 0, 1, 0, 2, 0, 1, 0, 3,
+ 0, 1, 0, 2, 0, 1, 0, 4 };
+ char basebuf[24 + 32];
+ size_t base;
+
+ for (base = 0; base < 32; ++base)
+ {
+ char *buf = basebuf + base;
+ size_t words;
+
+ for (words = 0; words < 4; ++words)
+ {
+ size_t last;
+ memset (buf, 'a', words * 4);
+
+ for (last = 0; last < 16; ++last)
+ {
+ buf[words * 4 + 0] = (last & 1) != 0 ? 'b' : '\0';
+ buf[words * 4 + 1] = (last & 2) != 0 ? 'c' : '\0';
+ buf[words * 4 + 2] = (last & 4) != 0 ? 'd' : '\0';
+ buf[words * 4 + 3] = (last & 8) != 0 ? 'e' : '\0';
+ buf[words * 4 + 4] = '\0';
+
+ if (strlen (buf) != words * 4 + lens[last]
+ || strnlen (buf, -1) != words * 4 + lens[last])
+ {
+ printf ("failed for base=%Zu, words=%Zu, and last=%Zu\n",
+ base, words, last);
+ return 1;
+ }
+ }
+ }
+ }
+ return 0;
+}