Issue #14785: Add sys._debugmallocstats() to help debug low-level memory allocation issues
diff --git a/Include/setobject.h b/Include/setobject.h
index 00e5344..a14874b 100644
--- a/Include/setobject.h
+++ b/Include/setobject.h
@@ -101,6 +101,7 @@
 PyAPI_FUNC(int) _PySet_Update(PyObject *set, PyObject *iterable);
 
 PyAPI_FUNC(int) PySet_ClearFreeList(void);
+PyAPI_FUNC(void) _PySet_DebugMallocStats(FILE *out);
 #endif
 
 #ifdef __cplusplus