Re: [lwip-users] Bug in inet_chksum_pseudo() produces bad checksum(Paradigm C++)

[Frédéric BERNON]

Hi Dave,

I don't understand why Paradigm C++ misunderstand "while (acc >> 16)". Do 
you have report the problem to paradigm support ?

Else, can you give us the bug ID from 2002 which already report that?

Thank


----- Original Message ----- 
From: "Dave Lyneham" <address@hidden>
To: <address@hidden>
Sent: Friday, August 24, 2007 5:55 AM
Subject: [lwip-users] Bug in inet_chksum_pseudo() produces bad 
checksum(Paradigm C++)


> Hi All,
>
> inet_chksum_pseudo() had been producing bad checksum when compiled
> under Paradigm C++.  Tracked problem down to the conditional based on
> bitwise shift right as in:
>
>  while (acc >> 16) {
>
> This conditional is never true, but works when changed to
>
>  while ((acc >> 16) > 0) {
>
> I notice there was a report of a bug in 2002 for the same function
> producing bad checksum, maybe this was also the cause in that case.
>
> Cheers
> Dave
>
>
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