1 files changed, 22 insertions, 4 deletions
diff --git a/libc/string/test-strncasecmp.c b/libc/string/test-strncasecmp.c
index 4eedd3d02..00eca4a26 100644
--- a/libc/string/test-strncasecmp.c
+++ b/libc/string/test-strncasecmp.c
@@ -17,6 +17,7 @@
    License along with the GNU C Library; if not, see
    <http://www.gnu.org/licenses/>.  */
 
+#include <locale.h>
 #include <ctype.h>
 #define TEST_MAIN
 #define TEST_NAME "strncasecmp"
@@ -256,17 +257,21 @@ bz14195 (void)
     check_result (impl, empty_string, "", 5, 0);
 }
 
-int
-test_main (void)
+static void
+test_locale (const char *locale)
 {
   size_t i;
 
-  test_init ();
+  if (setlocale (LC_CTYPE, locale) == NULL)
+    {
+      error (0, 0, "cannot set locale \"%s\"", locale);
+      ret = 1;
+    }
 
   bz12205 ();
   bz14195 ();
 
-  printf ("%23s", "");
+  printf ("%23s", locale);
   FOR_EACH_IMPL (impl, 0)
     printf ("\t%s", impl->name);
   putchar ('\n');
@@ -329,6 +334,19 @@ test_main (void)
     }
 
   do_random_tests ();
+}
+
+int
+test_main (void)
+{
+  test_init ();
+
+  test_locale ("C");
+  test_locale ("en_US.ISO-8859-1");
+  test_locale ("en_US.UTF-8");
+  test_locale ("tr_TR.ISO-8859-9");
+  test_locale ("tr_TR.UTF-8");
+
   return ret;
 }