5 files changed, 15 insertions, 5 deletions
diff --git a/Lib/test/crashers/loosing_mro_ref.py b/Lib/test/crashers/loosing_mro_ref.py
index 5ecde63820..a8c6e63ee2 100644
--- a/Lib/test/crashers/loosing_mro_ref.py
+++ b/Lib/test/crashers/loosing_mro_ref.py
@@ -27,10 +27,9 @@ class Base(object):
 class Base2(object):
     mykey = 'from Base2'
 
-class X(Base):
-    # you can't add a non-string key to X.__dict__, but it can be
-    # there from the beginning :-)
-    locals()[MyKey()] = 5
+# you can't add a non-string key to X.__dict__, but it can be
+# there from the beginning :-)
+X = type('X', (Base,), {MyKey(): 5})
 
 print(X.mykey)
 # I get a segfault, or a slightly wrong assertion error in a debug build.
diff --git a/Lib/test/test_grammar.py b/Lib/test/test_grammar.py
index 1a34ff8b74..acfe1f1573 100644
--- a/Lib/test/test_grammar.py
+++ b/Lib/test/test_grammar.py
@@ -335,6 +335,7 @@ class GrammarTests(unittest.TestCase):
         self.assertEquals(l5(1, 2), 5)
         self.assertEquals(l5(1, 2, 3), 6)
         check_syntax_error(self, "lambda x: x = 2")
+        check_syntax_error(self, "lambda (None,): None")
         l6 = lambda x, y, *, k=20: x+y+k
         self.assertEquals(l6(1,2), 1+2+20)
         self.assertEquals(l6(1,2,k=10), 1+2+10)
diff --git a/Lib/test/test_heapq.py b/Lib/test/test_heapq.py
index 1c7c97fa48..fba4fd71f8 100644
--- a/Lib/test/test_heapq.py
+++ b/Lib/test/test_heapq.py
@@ -211,10 +211,11 @@ class TestHeapC(TestHeap):
         class LE:
             def __init__(self, x):
                 self.x = x
-            def __lt__(self, other):
+            def __le__(self, other):
                 return self.x >= other.x
         data = [random.random() for i in range(100)]
         target = sorted(data, reverse=True)
+        print("HASATTR", hasattr(LE(0), "__lt__"), LE(0).__lt__)
         self.assertEqual(hsort(data, LT), target)
         self.assertEqual(hsort(data, LE), target)
 
diff --git a/Lib/test/test_struct.py b/Lib/test/test_struct.py
index 917f62695b..616e6658d5 100644
--- a/Lib/test/test_struct.py
+++ b/Lib/test/test_struct.py
@@ -8,6 +8,7 @@ from test.support import TestFailed, verbose, run_unittest, catch_warning
 
 import sys
 ISBIGENDIAN = sys.byteorder == "big"
+IS32BIT = sys.maxsize == 0x7fffffff
 del sys
 
 try:
@@ -580,6 +581,11 @@ class StructTest(unittest.TestCase):
             for c in [b'\x01', b'\x7f', b'\xff', b'\x0f', b'\xf0']:
                 self.assertTrue(struct.unpack('>?', c)[0])
 
+    if IS32BIT:
+        def test_crasher(self):
+            self.assertRaises(MemoryError, struct.pack, "357913941b", "a")
+
+
 def test_main():
     run_unittest(StructTest)
 
diff --git a/Lib/test/test_sys.py b/Lib/test/test_sys.py
index 4049802969..08fc909dca 100644
--- a/Lib/test/test_sys.py
+++ b/Lib/test/test_sys.py
@@ -520,6 +520,9 @@ class SizeofTest(unittest.TestCase):
         self.check_sizeof(32768, h + self.align(2) + 2)
         self.check_sizeof(32768*32768-1, h + self.align(2) + 2)
         self.check_sizeof(32768*32768, h + self.align(2) + 4)
+        # tuple
+        self.check_sizeof((), h)
+        self.check_sizeof((1,2,3), h + 3*p)
 
 
 def test_main():