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-rw-r--r--time/mktime.c23
1 files changed, 17 insertions, 6 deletions
diff --git a/time/mktime.c b/time/mktime.c
index 7b93f1d..ab4c0ad 100644
--- a/time/mktime.c
+++ b/time/mktime.c
@@ -124,22 +124,33 @@ time_t __mktime_internal __P ((struct tm *,
#ifdef _LIBC
# define localtime_r __localtime_r
#else
-# if ! HAVE_LOCALTIME_R && ! defined localtime_r
-/* Approximate localtime_r as best we can in its absence. */
-# define localtime_r my_mktime_localtime_r
-static struct tm *localtime_r __P ((const time_t *, struct tm *));
+# if HAVE_LOCALTIME_R == defined localtime_r
+/* Provide our own substitute for a missing or possibly broken localtime_r. */
+static struct tm *my_mktime_localtime_r __P ((const time_t *, struct tm *));
static struct tm *
-localtime_r (t, tp)
+my_mktime_localtime_r (t, tp)
const time_t *t;
struct tm *tp;
{
+# ifdef localtime_r
+ /* Digital Unix 4.0A and 4.0D have a macro localtime_r with the
+ standard meaning, along with an unwanted, nonstandard function
+ localtime_r. The placeholder function my_mktime_localtime_r
+ invokes the macro; use that instead of the system's bogus
+ localtime_r. */
+ return localtime_r (t, tp);
+# undef localtime_r
+# else /* ! defined (localtime_r) */
+ /* Approximate localtime_r as best we can in its absence. */
struct tm *l = localtime (t);
if (! l)
return 0;
*tp = *l;
return tp;
+# endif /* ! defined localtime_r */
}
-# endif /* ! HAVE_LOCALTIME_R && ! defined (localtime_r) */
+# define localtime_r my_mktime_localtime_r
+# endif /* HAVE_LOCALTIME_R == defined localtime_r */
#endif /* ! _LIBC */