Reverted change for bug #27252 (Address pointer invalid after freeing pbuf in UDP receive callback) as it made more problems than before :-(

2026-05-22 16:16:55 +08:00 · 2009-10-07 17:50:46 +00:00
parent ddc783bee7
commit 9e5cf1cf8e
3 changed files with 4 additions and 7 deletions
--- a/src/include/lwip/udp.h
+++ b/src/include/lwip/udp.h
@@ -94,6 +94,9 @@ struct udp_pcb {
   * The callback is responsible for freeing the pbuf
   * if it's not used any more.
   *
+   * ATTENTION: Be aware that 'addr' points into the pbuf 'p' so freeing this pbuf
+   *            makes 'addr' invalid, too.
+   *
   * @param arg user supplied argument (udp_pcb.recv_arg)
   * @param pcb the udp_pcb which received data
   * @param p the packet buffer that was received