[lwip-users] PBUF_REF: udp_send() has pbuf_dechain() removed. Why?

[leon . woestenberg]

Hello David,

testing our code against the latest CVS version, we ended up with an
assertion failure all the time.

in udp.c 1.24 to 1.25 udp_send() was changed to have the call to
pbuf_dechain() removed:

  /* dechain and free the header pbuf */
  if(hdr != NULL) {
    ////////   pbuf_dechain(hdr);
    pbuf_free(hdr);
  }

Now, the whole chain is freed, after which the application again frees
its pointer to its own pbuf, resulting in an assertion failure in pbuf_free()!

David, why did you remove the dechain()? 

Regards,

Leon Woestenberg

Axon Digital Design 
Phone: +31 13 511 6666
Fax: +31 13 511 4151
web: www.axon.tv

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