tracemalloc: Fix tracebacks memory leak

jbrobst · jbrobst · commit 583bc41c86ad · 2024-07-04T23:39:44.000-04:00
The tracemallocs_tracebacks hash table has traceback keys and NULL values, but
its destructors do not reflect this -- key_destroy_func is NULL while
value_destroy_func is raw_free. Swap these to free the traceback keys instead.
diff --git a/Python/tracemalloc.c b/Python/tracemalloc.c
@@ -838,7 +838,7 @@ _PyTraceMalloc_Init(void)
 
     tracemalloc_tracebacks = hashtable_new(hashtable_hash_traceback,
                                            hashtable_compare_traceback,
-                                           NULL, raw_free);
+                                           raw_free, NULL);
 
     tracemalloc_traces = tracemalloc_create_traces_table();
     tracemalloc_domains = tracemalloc_create_domains_table();
