patch 8.1.2326: cannot parse a date/time string
Problem: Cannot parse a date/time string.
Solution: Add strptime(). (Stephen Wall, closes #)
diff --git a/src/os_unix.h b/src/os_unix.h
index 618c0e9..a7a0c84 100644
--- a/src/os_unix.h
+++ b/src/os_unix.h
@@ -127,9 +127,16 @@
# endif
#endif
+// on some systems time.h should not be included together with sys/time.h
#if !defined(HAVE_SYS_TIME_H) || defined(TIME_WITH_SYS_TIME)
-# include <time.h> /* on some systems time.h should not be
- included together with sys/time.h */
+// Needed for strptime()
+# ifndef _XOPEN_SOURCE
+# define _XOPEN_SOURCE
+# endif
+# ifndef __USE_XOPEN
+# define __USE_XOPEN
+# endif
+# include <time.h>
#endif
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>