Use Windows epoch on Windows

haukex · haukex · commit dc1824b65914 · 2023-02-04T16:24:58.000+01:00
diff --git a/Modules/timemodule.c b/Modules/timemodule.c
@@ -2273,7 +2273,9 @@ pysleep(_PyTime_t timeout, int absolute)
     // No need to check for integer overflow, both types are signed
     assert(sizeof(due_time) == sizeof(timeout_100ns));
     if (absolute) {
-        due_time.QuadPart = timeout_100ns;
+        // Adjust from Unix time (1970-01-01) to Windows time (1601-01-01)
+        // (the inverse of what is done in py_get_system_clock)
+        due_time.QuadPart = timeout_100ns + 116444736000000000;
     }
     else {
         // SetWaitableTimer(): a negative due time indicates relative time
