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-rw-r--r--string/tst-strlen.c32
1 files changed, 32 insertions, 0 deletions
diff --git a/string/tst-strlen.c b/string/tst-strlen.c
new file mode 100644
index 0000000..a58f878
--- /dev/null
+++ b/string/tst-strlen.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+#include <string.h>
+
+int
+main()
+{
+ static const lens[16] = { 0, 1, 0, 2, 0, 1, 0, 3, 0, 1, 0, 2, 0, 1, 0, 4 };
+ char buf[24];
+ int words;
+
+ for (words = 0; words < 4; ++words)
+ {
+ int 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])
+ {
+ printf ("failed for words=%d and last=%d\n", words, last);
+ return 1;
+ }
+ }
+ }
+ return 0;
+}