Re: [lwip-devel] memory alignment in 32bit architecture

[Piero 74]

my micro will generate a data abort exception.

what solution do you suggest?
do you think that dns code is not well done (i want to say... portable
without changes)?

piero


2009/3/20, Bill Auerbach <address@hidden>:
> I'd trust the compiler on this one and say it's bad.  If it does end up
> unaligned, you'll get either bad data or a exception trap depending on what
> your processor does for this case.
>
> Bill
>
>>-----Original Message-----
>>From: address@hidden
>>[mailto:address@hidden On
>>Behalf Of Piero 74
>>Sent: Friday, March 20, 2009 2:46 PM
>>To: lwip-devel
>>Subject: Re: [lwip-devel] memory alignment in 32bit architecture
>>
>>Simon, as you said was my understanding.
>>but, why i have this warning:
>>
>>"i'm trying to use lwip in cvs head...
>>
>> i tried the compilation, and i saw in these piece of code (file dhcp.c)
>>
>> #if LWIP_DNS
>>       dns_setserver( n, (struct ip_addr *)(&(dhcp-
>>>offered_dns_addr[n].addr)));
>> #endif /* LWIP_DNS */
>>
>> a warning like this:
>> Warning[Pa039]: use of address of unaligned structure member
>>....\lwip\src\core\dhcp.c 539
>>"
>>
>>bye
>>Piero
>
>
>
>
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