Add workaround for a recursion problem

- the problem occurs with pytest under Windows and Python >= 3.12
- this is a workaround until the problem is
  better understood

CHANGES.md

@@ -16,7 +16,9 @@ The released versions correspond to PyPI releases.
 
 ### Fixes
 * fixed a regression in version 5.7.2 that `tempfile` was not patched after pause/resume
-  (POSIX only, see [#1098](../../issues/1098))4
+  (POSIX only, see [#1098](../../issues/1098))
+* added workaround for a recursion occurring if using pytest under Windows and Python >= 3.12
+  (see [#1096](../../issues/1096))
 
 ### Infrastructure
 * run pytest-specific tests for all supported Python versions

pyfakefs/fake_filesystem_unittest.py

@@ -700,7 +700,10 @@ def updatecache(self, filename, module_globals=None):
         """Calls the original linecache.updatecache making sure no fake OS calls
         are used."""
         with use_original_os():
-            return self.linecache_updatecache(filename, module_globals)
+            # workaround for updatecache problem with pytest under Windows, see #1096
+            if not filename.endswith(r"pytest.exe\__main__.py"):
+                return self.linecache_updatecache(filename, module_globals)
+            return []
 
     @classmethod
     def clear_fs_cache(cls) -> None:
@@ -1010,7 +1013,7 @@ def start_patching(self) -> None:
             self._patching = True
             self._paused = False
 
-            if sys.version_info >= (3, 13):
+            if sys.version_info >= (3, 12):
                 # in linecache, 'os' is now imported locally, which involves the
                 # dynamic patcher, therefore we patch the affected functions
                 self.linecache_updatecache = linecache.updatecache

pyfakefs/pytest_tests/pytest_plugin_test.py

@@ -77,3 +77,11 @@ def test_switch_to_linux(fs):
 def test_switch_to_macos(fs):
     fs.os = OSType.MACOS
     assert os.path.exists(tempfile.gettempdir())
+
+
+def test_updatecache_problem(fs):
+    # regression test for #1096
+    filename = r"C:\source_file"
+    fs.create_file(filename)
+    with open(filename):
+        assert True