RE: [lwip-users] '__packed' problem with ADS 1.2

Robert Brown Thu, 01 Sep 2005 18:44:45 -0700

Sorry, I can't offer a solution but I can share my experience. About 18 months ago I tried to get the ADS compiler to do something sensible with the __packed qualifier but was unsuccessful. Ultimately, I abandoned the use of the __packed qualifier and modified the my ethernet driver to ensure that the IP header is 32-bit word aligned.

There have been several discussions about this problem and related problems. You may find some help in the mailing list archives.

Regards,

Robert Brown

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]On Behalf Of 梦程
Sent: September 1, 2005 9:25 PM
To: [email protected]
Subject: [lwip-users] '__packed' problem with ADS 1.2

Hi

When I compile the LwIP 1.1 with the ADS 1.2, the compiler show some error :

'=' implicit cast of pointer loses '__packed' qualifier

it maked by code like : seg->p->payload = seg->tcphdr;

this is my define about pack:

#define PACK_STRUCT_FIELD(x) x//; #pragma STRUCT_ALIGN(x,1)
#define PACK_STRUCT_STRUCT
#define PACK_STRUCT_BEGIN __packed
#define PACK_STRUCT_END

any body an solution?

thx

ChengMeng

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RE: [lwip-users] '__packed' problem with ADS 1.2

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