1 files changed, 25 insertions, 0 deletions
diff --git a/Lib/test/test_import.py b/Lib/test/test_import.py
index c695757..48443ea 100644
--- a/Lib/test/test_import.py
+++ b/Lib/test/test_import.py
@@ -11,6 +11,7 @@ import stat
 import sys
 import unittest
 import textwrap
+import errno
 
 from test.support import (
     EnvironmentVarGuard, TESTFN, check_warnings, forget, is_jython,
@@ -310,6 +311,30 @@ class ImportTests(unittest.TestCase):
             """))
         script_helper.assert_python_ok(testfn)
 
+    def test_timestamp_overflow(self):
+        # A modification timestamp larger than 2**32 should not be a problem
+        # when importing a module (issue #11235).
+        sys.path.insert(0, os.curdir)
+        try:
+            source = TESTFN + ".py"
+            compiled = imp.cache_from_source(source)
+            with open(source, 'w') as f:
+                pass
+            try:
+                os.utime(source, (2 ** 33 - 5, 2 ** 33 - 5))
+            except OverflowError:
+                self.skipTest("cannot set modification time to large integer")
+            except OSError as e:
+                if e.errno != getattr(errno, 'EOVERFLOW', None):
+                    raise
+                self.skipTest("cannot set modification time to large integer ({})".format(e))
+            __import__(TESTFN)
+            # The pyc file was created.
+            os.stat(compiled)
+        finally:
+            del sys.path[0]
+            remove_files(TESTFN)
+
 
 class PycRewritingTests(unittest.TestCase):
     # Test that the `co_filename` attribute on code objects always points