Add test case from a past musl libc bug.

* tests/test-strstr.c (main): Add test of periodic needle.
* tests/test-strcasestr.c (main): Likewise.
* tests/test-c-strstr.c (main): Likewise.
* tests/test-c-strcasestr.c (main): Likewise.
* tests/test-memmem.c (main): Likewise.

5 files changed, 40 insertions, 0 deletions

diff --git a/tests/test-c-strcasestr.c b/tests/test-c-strcasestr.c
index 818f5a994b..4f0a6c262a 100644
--- a/tests/test-c-strcasestr.c
+++ b/tests/test-c-strcasestr.c
@@ -238,6 +238,14 @@ main ()
     free (haystack);
   }
 
+  /* Test case from Yves Bastide.
+     <https://www.openwall.com/lists/musl/2014/04/18/2>  */
+  {
+    const char input[] = "playing PLAY play PLAY always";
+    const char *result = c_strcasestr (input, "play PLAY play");
+    ASSERT (result == input + 8);
+  }
+
   /* Test long needles.  */
   {
     size_t m = 1024;
diff --git a/tests/test-c-strstr.c b/tests/test-c-strstr.c
index d8f8465b29..30070d70a4 100644
--- a/tests/test-c-strstr.c
+++ b/tests/test-c-strstr.c
@@ -212,6 +212,14 @@ main ()
     free (haystack);
   }
 
+  /* Test case from Yves Bastide.
+     <https://www.openwall.com/lists/musl/2014/04/18/2>  */
+  {
+    const char input[] = "playing play play play always";
+    const char *result = c_strstr (input, "play play play");
+    ASSERT (result == input + 8);
+  }
+
   /* Test long needles.  */
   {
     size_t m = 1024;
diff --git a/tests/test-memmem.c b/tests/test-memmem.c
index 0daf3b07e7..589210f4a2 100644
--- a/tests/test-memmem.c
+++ b/tests/test-memmem.c
@@ -292,6 +292,14 @@ main (int argc, char *argv[])
     free (haystack);
   }
 
+  /* Test case from Yves Bastide.
+     <https://www.openwall.com/lists/musl/2014/04/18/2>  */
+  {
+    const char input[] = "playing play play play always";
+    const char *result = memmem (input, strlen (input), "play play play", 14);
+    ASSERT (result == input + 8);
+  }
+
   /* Test long needles.  */
   {
     size_t m = 1024;
diff --git a/tests/test-strcasestr.c b/tests/test-strcasestr.c
index 192e1569f8..c0f5111b4a 100644
--- a/tests/test-strcasestr.c
+++ b/tests/test-strcasestr.c
@@ -252,6 +252,14 @@ main ()
     free (haystack);
   }
 
+  /* Test case from Yves Bastide.
+     <https://www.openwall.com/lists/musl/2014/04/18/2>  */
+  {
+    const char input[] = "playing PLAY play PLAY always";
+    const char *result = strcasestr (input, "play PLAY play");
+    ASSERT (result == input + 8);
+  }
+
   /* Test long needles.  */
   {
     size_t m = 1024;
diff --git a/tests/test-strstr.c b/tests/test-strstr.c
index b2e00c526c..1ff9953d31 100644
--- a/tests/test-strstr.c
+++ b/tests/test-strstr.c
@@ -275,6 +275,14 @@ main (int argc, char *argv[])
     free (haystack);
   }
 
+  /* Test case from Yves Bastide.
+     <https://www.openwall.com/lists/musl/2014/04/18/2>  */
+  {
+    const char input[] = "playing play play play always";
+    const char *result = strstr (input, "play play play");
+    ASSERT (result == input + 8);
+  }
+
   /* Test long needles.  */
   {
     size_t m = 1024;