Address feedback

docs/src/userguide/source_files_and_compilation.rst

@@ -839,7 +839,9 @@ Cython code.  Here is the list of currently supported directives:
     without an active GIL and prevent the GIL from being enabled
     when the module is imported. Otherwise the slot is set to
     ``Py_MOD_GIL_USED`` which will cause the GIL to be automatically
-    enabled. Default is False.
+    enabled. Setting this to True does not itself make the module safe
+    to run without the GIL; it merely confirms that you have checked
+    the logic and consider it safe to run. Default is False.
 
 ``overflowcheck`` (True / False)
     If set to True, raise errors on overflowing C integer arithmetic

tests/run/freethreading_compatible.srctree

@@ -21,6 +21,9 @@ setup(ext_modules=ext_modules)
 
 def test():
     import sys
+    import sysconfig
+    if not sysconfig.get_config_var("Py_GIL_DISABLED"):
+        return
     assert sys._is_gil_enabled()
 
 ######## compatible.py ########
@@ -29,6 +32,9 @@ def test():
 
 def test():
     import sys
+    import sysconfig
+    if not sysconfig.get_config_var("Py_GIL_DISABLED"):
+        return
     assert not sys._is_gil_enabled()
 
 ######## incompatible.py ########
@@ -37,4 +43,7 @@ def test():
 
 def test():
     import sys
+    import sysconfig
+    if not sysconfig.get_config_var("Py_GIL_DISABLED"):
+        return
     assert sys._is_gil_enabled()