[lwip-devel] [bug #52611] Incorrect use of ctype macros?

[Mike Kleshov]

URL:
  <http://savannah.nongnu.org/bugs/?52611>

                 Summary: Incorrect use of ctype macros?
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: kleshov
            Submitted on: Thu 07 Dec 2017 12:22:27 PM MSK
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  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:

A recent commit casts arguments to int before invoking ctype macros:
http://git.savannah.nongnu.org/cgit/lwip.git/commit/?id=eb30dbfdc5d458d4b996987d8be9c818743e59e5
If I remember correctly, gcc complains about this since arguments could be
negative and this would lead to accessing an array with a negative index.
So I suggest casting arguments to unsigned int instead.




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