Structure alignment problem

Richard Earnshaw rearnsha@arm.com
Mon Nov 4 04:41:00 GMT 2002


> 
> > Because you need to pack the structure as a whole, not just the members of 
> > it.
>  
> > Try
> > 
> > typedef struct {
> >     unsigned char Var1;
> > } mystruct __attribute__((packed));
> > 
> > R.
> 
> Tried that does not work !!

Ah, yes; that's because of a long-standing bug in gcc.  Separate the 
typedef from the structure declartion and it should all be fine.  Ie

struct mystruct {
    unsigned char Var1;
}  __attribute__((packed));

typedef struct mystruct mystruct;

Life is such fun...

R.


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