Lpc2000

If you have a union of two (or more) structures, those structures must
also have a packed attribute.

--
Paul Curtis, Rowley Associates Ltd  http://www.rowley.co.uk
CrossWorks for MSP430, ARM, AVR and now MAXQ processors

> -----Original Message-----
> From: nourson54 [mailto:nourson54@...] 
> Sent: 20 September 2005 14:54
> To: lpc2000@yahoogroups.com
> Subject: [lpc2000] Struct/Union alignement problem with Crossworks
> 
> Hello,
> 
> I'm trying a fat16 library that use an union for storing the 
> bootsector data, and it seems the compiler doesn't handle 
> correctly the width of types in memory. 
> So I searched some help on crossworks (gcc) compiler and 
> found that I have to use this attribute with my concerned unions :
>  __attribute__ ((__packed__))
> 
> But if the compiler doesn't shout at me when compiling , it 
> seems it has no effect : my union is badly aligned.
> 
> Have any idea ?
> 
> 
> 
> 
> 
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