0.9.18.10: Win32 get_timezone robustness

[sbcl.git] / src / runtime / time.c

diff --git a/src/runtime/time.c b/src/runtime/time.c
index 4b4cf9c..b4049c8 100644 (file)
--- a/src/runtime/time.c
+++ b/src/runtime/time.c
@@ -27,7 +27,12 @@ void get_timezone(time_t when, int *secwest, boolean *dst)
     /* No _r versions on Windows, but the API documentation also
      * doesn't warn them about being non-reentrant... So here's
      * hoping they actually are -- once Windows grows threads
-     * this better be checked, though. */
+     * this better be checked, though. 
+     *
+     * The Windows versions also don't support times before the
+     * epoch, so we kludge it. */
+    if (when < 0) 
+       when = -when;
     ltm = *localtime(&when);
     gtm = *gmtime(&when);
 #else