diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index 230f764fd6f..e3e26d1440c 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,9 @@
+2016-09-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
+
+	PR libstdc++/77717
+	* testsuite/21_strings/basic_string_view/operations/compare/char/1.cc:
+	Fix an out-of-bounds access.
+
 2016-09-26  Marek Polacek  <polacek@redhat.com>
 
 	PR c/7652
diff --git a/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/compare/char/1.cc b/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/compare/char/1.cc
index 77188b3eba1..28e2514d016 100644
--- a/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/compare/char/1.cc
+++ b/libstdc++-v3/testsuite/21_strings/basic_string_view/operations/compare/char/1.cc
@@ -82,8 +82,8 @@ test01()
   test_value(strncmp(str_1.data(), str_0.data(), 6), z);
   test_value(strncmp(str_1.data(), str_0.data(), 14), lt);
   test_value(memcmp(str_1.data(), str_0.data(), 6), z);
-  test_value(memcmp(str_1.data(), str_0.data(), 14), lt);
-  test_value(memcmp("costa marbella", "costa rica", 14), lt);
+  test_value(memcmp(str_1.data(), str_0.data(), 10), lt);
+  test_value(memcmp("costa marbella", "costa rica", 10), lt);
 
   // int compare(const basic_string_view& str) const;
   test_value(str_0.compare(str_1), gt); //because r>m