Update.

* time/Makefile (tests): Add tst-mktime.
	* time/tst-mktime.c: New file.

	* posix/tst-dir.c (main): One more mkdir() test.

time/tst-mktime.c

@@ -0,0 +1,33 @@
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+int
+main (void)
+{
+  struct tm time_str;
+  char daybuf[20];
+  int result;
+
+  time_str.tm_year = 2001 - 1900;
+  time_str.tm_mon = 7 - 1;
+  time_str.tm_mday = 4;
+  time_str.tm_hour = 0;
+  time_str.tm_min = 0;
+  time_str.tm_sec = 1;
+  time_str.tm_isdst = -1;
+
+  if (mktime (&time_str) == -1)
+    {
+      (void) puts ("-unknown-");
+      result = 1;
+    }
+  else
+    {
+      (void) strftime (daybuf, sizeof (daybuf), "%A", &time_str);
+      (void) puts (daybuf);
+      result = strcmp (daybuf, "Wednesday") != 0;
+    }
+
+  return result;
+}