Issue #29058: All stable API extensions added after Python 3.2 are now
available only when Py_LIMITED_API is set to the PY_VERSION_HEX value of
the minimum Python version supporting this API.
diff --git a/Include/warnings.h b/Include/warnings.h
index c1c6992..a3f83ff 100644
--- a/Include/warnings.h
+++ b/Include/warnings.h
@@ -18,12 +18,14 @@
     const char *format,         /* ASCII-encoded string  */
     ...);
 
+#if !defined(Py_LIMITED_API) || Py_LIMITED_API+0 >= 0x03060000
 /* Emit a ResourceWarning warning */
 PyAPI_FUNC(int) PyErr_ResourceWarning(
     PyObject *source,
     Py_ssize_t stack_level,
     const char *format,         /* ASCII-encoded string  */
     ...);
+#endif
 #ifndef Py_LIMITED_API
 PyAPI_FUNC(int) PyErr_WarnExplicitObject(
     PyObject *category,