--- /dev/null
+/* Test case by Jakub Jelinek <jakub@redhat.com>. */
+#include <locale.h>
+#include <stdio.h>
+#include <string.h>
+
+int
+main (void)
+{
+ char q[30];
+ char *s;
+
+ setlocale (LC_ALL, "");
+ printf ("after setlocale (LC_ALL, \"\"): %s\n", setlocale(LC_NUMERIC, NULL));
+
+ strcpy (q, "de_DE.UTF-8");
+ setlocale (LC_NUMERIC, q);
+ printf ("after setlocale (LC_NUMERIC, \"%s\"): %s\n",
+ q, setlocale(LC_NUMERIC, NULL));
+
+ strcpy (q, "de_DE.ISO-8859-1");
+ s = setlocale (LC_NUMERIC, NULL);
+ printf ("after overwriting string: %s\n", s);
+
+ return strcmp (s, "de_DE.UTF-8") != 0;
+}