-tre_mem_t tre_mem_new_impl(int provided, void *provided_block);
-void *tre_mem_alloc_impl(tre_mem_t mem, int provided, void *provided_block,
- int zero, size_t size);
+hidden tre_mem_t tre_mem_new_impl(int provided, void *provided_block);
+hidden void *tre_mem_alloc_impl(tre_mem_t mem, int provided, void *provided_block,
+ int zero, size_t size);