--- libmalloc/libmalloc-374.60.3/src/pgm_malloc.h
+++ libmalloc/libmalloc-409.81.2/src/pgm_malloc.h
@@ -36,4 +36,8 @@
 malloc_zone_t *
 pgm_create_zone(malloc_zone_t *wrapped_zone);
 
+MALLOC_NOEXPORT
+void
+pgm_thread_set_disabled(bool disabled);
+
 #endif // _PGM_MALLOC_H_