[lwip-devel] [bug #21075] pbuf_realloc() use with PBUF_RAM and MEM_LIBC_MALLOC fails

[Frédéric Bernon]

Follow-up Comment #1, bug #21075 (project lwip):

mem_realloc is only used by pbuf_realloc, in this last one doc (previous
comment), we can read "@note Despite its name, pbuf_realloc cannot grow the
size of a pbuf (chain).". There is also in the pbuf_realloc code this check:

  /* desired length larger than current length? */
  if (new_len >= p->tot_len) {
    /* enlarging not yet supported */
    return;
  }

So, I think the simplest thing to do is to replace in mem.h, line 68:

#define mem_realloc(x, size) realloc(x,size)

by

#define mem_realloc(mem, size) (mem)


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