[lwip-devel] [bug #64118] Maybe there is a memory leak in mem.c

[Shou]

URL:
  <https://savannah.nongnu.org/bugs/?64118>

                 Summary: Maybe there is a memory leak in mem.c
                   Group: lwIP - A Lightweight TCP/IP stack
               Submitter: zcshou
               Submitted: Thu 27 Apr 2023 01:38:09 AM UTC
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: 2.1.3


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Follow-up Comments:


-------------------------------------------------------
Date: Thu 27 Apr 2023 01:38:09 AM UTC By: Shou <zcshou>
In mem_init, the ram points to ram_heap with alignment (ram = (u8_t
*)LWIP_MEM_ALIGN(LWIP_RAM_HEAP_POINTER); ), but the ram_end points to
ram[MEM_SIZE_ALIGNED]. So the last SIZEOF_STRUCT_MEM will not used

LWIP_DECLARE_MEMORY_ALIGNED(ram_heap, MEM_SIZE_ALIGNED + (2U *
SIZEOF_STRUCT_MEM));
|--------------------------| <---  ram (ram_heap)
|--------------------------|
|--------------------------|
|--------------------------|
|----SIZEOF_STRUCT_MEM-----| <--- -MEM_SIZE_ALIGNED / ram_end 
|----SIZEOF_STRUCT_MEM-----|







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