[lwip-devel] [bug #48953] mdns_readname_loop() allocates rather big array on the stack

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/bugs/?48953>

                 Summary: mdns_readname_loop() allocates rather big array on
the stack
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Tue 30 Aug 2016 07:29:30 PM GMT
                Category: None
                Severity: 3 - Normal
              Item Group: Change Request
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None
            lwIP version: git head

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Details:

mdns_readname_loop() decodes a DNS name (this is kind of duplicate to what
dns.c does, already, so might be merged?).
However, when doing so, it allocates a 63 byte array on the stack. This is
rather not the coding style lwIP has had so far: the stack has so far tried to
keep stack usage minimal...




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