Issue #11188, #19748: mktime() returns -1 on error. On Linux, the tm_wday field

vstinner · vstinner · commit 8c8b4e0ebf5f · 2014-02-21T23:54:32.000+01:00
is used as a sentinel () to detect if -1 is really an error or a valid
timestamp. On AIX, tm_wday is unchanged even on success and so cannot be used
as a sentinel.
diff --git a/Lib/test/test_time.py b/Lib/test/test_time.py
@@ -346,6 +346,13 @@ def test_localtime_without_arg(self):
     def test_mktime(self):
         # Issue #1726687
         for t in (-2, -1, 0, 1):
+            if sys.platform.startswith('aix') and t == -1:
+                # Issue #11188, #19748: mktime() returns -1 on error. On Linux,
+                # the tm_wday field is used as a sentinel () to detect if -1 is
+                # really an error or a valid timestamp. On AIX, tm_wday is
+                # unchanged even on success and so cannot be used as a
+                # sentinel.
+                continue
             try:
                 tt = time.localtime(t)
             except (OverflowError, OSError):
