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[lwip-users] use of struct timeval in sys_jiffies, UNIX port

From: steinarl
Subject: [lwip-users] use of struct timeval in sys_jiffies, UNIX port
Date: Thu, 19 Jun 2008 16:37:30 +0200
User-agent: Internet Messaging Program (IMP) H3 (4.1.5)

My compiler complained about tv.tv_sec being used before it was
initialized, and upon inspection I must say I don't really understand
what is happening.

Depending on the compiler, isn't the value of tv_sec at best
initialized to zero, otherwise unpredictable? And the result from gettimeofday is not used for anything?

 From sys_arch.c, UNIX port, latest version in CVS.

unsigned long
     struct timeval tv;
     unsigned long sec = tv.tv_sec;
     long usec = tv.tv_usec;


     if (sec >= (MAX_JIFFY_OFFSET / HZ))
        return MAX_JIFFY_OFFSET;
     usec += 1000000L / HZ - 1;
     usec /= 1000000L / HZ;
     return HZ * sec + usec;

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