337   /** index (-> ram[next]) of the next struct */
339   /** index (-> ram[prev]) of the previous struct */
351  * larger values could prevent too small blocks to fragment the RAM too much. */
370 /** pointer to the heap (ram_heap): for alignment, ram is now a pointer instead of an array */
371 static u8_t *ram;  variable
440   return (struct mem *)(void *)&ram[ptr];  in ptr_to_mem()
446   return (mem_size_t)((u8_t *)mem - ram);  in mem_to_ptr()
466   LWIP_ASSERT("plug_holes: mem >= ram", (u8_t *)mem >= ram);  in plug_holes()
475     /* if mem->next is unused and not end of ram, combine mem and mem->next */  in plug_holes()
511   ram = (u8_t *)LWIP_MEM_ALIGN(LWIP_RAM_HEAP_POINTER);  in mem_init()
513   mem = (struct mem *)(void *)ram;  in mem_init()
525   lfree = (struct mem *)(void *)ram;  in mem_init()
561   mem = (struct mem *)ram;  in mem_sanity()
570        ((u8_t *)mem > ram) && (mem < ram_end);  in mem_sanity()
625   if ((u8_t *)mem < ram || (u8_t *)rmem + MIN_SIZE_ALIGNED > (u8_t *)ram_end) {  in mem_free()
664   MEM_STATS_DEC_USED(used, mem->next - (mem_size_t)(((u8_t *)mem - ram)));  in mem_free()
708   LWIP_ASSERT("mem_trim: legal memory", (u8_t *)rmem >= (u8_t *)ram &&  in mem_trim()
711   if ((u8_t *)rmem < (u8_t *)ram || (u8_t *)rmem >= (u8_t *)ram_end) {  in mem_trim()