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[lwip-devel] [bug #54229] tcp.c, 679: extra check

From: Andrey Vinogradov
Subject: [lwip-devel] [bug #54229] tcp.c, 679: extra check
Date: Mon, 2 Jul 2018 09:06:54 -0400 (EDT)
User-agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3472.3 Safari/537.36


                 Summary: tcp.c, 679: extra check
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: andreyvinogradov
            Submitted on: Пн. 02 июля 2018 13:06:53
                Category: TCP
                Severity: 3 - Normal
              Item Group: Compiler Warning
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head



  /* Don't propagate NULL pointer (IPv4 ANY) to subsequent functions */
  if (ipaddr == NULL) {
    ipaddr = IP4_ADDR_ANY;
#endif /* LWIP_IPV4 */

  /* still need to check for ipaddr == NULL in IPv6 only case */
  LWIP_ERROR("tcp_bind: invalid pcb", pcb != NULL, return ERR_ARG);
  LWIP_ERROR("tcp_bind: invalid ipaddr", ipaddr != NULL, return ERR_ARG);

Probably need to put "ipaddr != NULL" check in #if !LWIP_IPV4...#endif case.
It's written in comment anyway.


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