diff --git a/Lib/test/support.py b/Lib/test/support.py
--- a/Lib/test/support.py
+++ b/Lib/test/support.py
@@ -1124,6 +1124,17 @@
         return wrapper
 
 
+def refcount_test(test):
+    """Decorator for tests which involve reference counting.
+
+    To start, the decorator does not run the test if is not run by CPython.
+    After that, any trace function is unset during the test to prevent
+    unexpected refcounts caused by the trace function.
+
+    """
+    return no_tracing(cpython_only(test))
+
+
 def _run_suite(suite):
     """Run tests from a unittest.TestSuite-derived class."""
     if verbose:
diff --git a/Lib/test/test_gc.py b/Lib/test/test_gc.py
--- a/Lib/test/test_gc.py
+++ b/Lib/test/test_gc.py
@@ -1,5 +1,6 @@
 import unittest
-from test.support import verbose, run_unittest, strip_python_stderr
+from test.support import (verbose, refcount_test, run_unittest,
+                            strip_python_stderr)
 import sys
 import gc
 import weakref
@@ -175,6 +176,7 @@
         del d
         self.assertEqual(gc.collect(), 2)
 
+    @refcount_test
     def test_frame(self):
         def f():
             frame = sys._getframe()
@@ -242,6 +244,7 @@
     # For example:
     # - disposed tuples are not freed, but reused
     # - the call to assertEqual somehow avoids building its args tuple
+    @refcount_test
     def test_get_count(self):
         # Avoid future allocation of method object
         assertEqual = self._baseAssertEqual
@@ -252,6 +255,7 @@
         # the dict, and the tuple returned by get_count()
         assertEqual(gc.get_count(), (2, 0, 0))
 
+    @refcount_test
     def test_collect_generations(self):
         # Avoid future allocation of method object
         assertEqual = self.assertEqual