String: Improve test coverage for memchr

This test improves memchr coverage near page boundary.

Reviewed-by: H.J. Lu <hjl.tools@gmail.com>

diff --git a/string/test-memchr.c b/string/test-memchr.c
index 1cbcd57fd43ae0f3cf2d2b855cfa5ba6280f1191..ab206e05db3dfe42c9d8b46ba7d89d9b45f7a820 100644 (file)
--- a/string/test-memchr.c
+++ b/string/test-memchr.c
@@ -251,6 +251,7 @@ test_main (void)
       /* page_size is in fact getpagesize() * 2.  */
       do_test (page_size / 2 - i, i, i, 1, 0x9B);
       do_test (page_size / 2 - i, i - 1, i - 1, 1, 0x9B);
+      do_test (page_size / 2 - (i * 4), i + 128, i + 128, i, 0x9B);
     }
 
   do_random_tests ();