Structure alignment problem

[Richard Earnshaw]

> Does some know why I get this with GCC 2.95.3 (arm-elf) ?
> 
> typedef struct {
>     unsigned char Var1 __attribute__((packed)) ;
> } mystruct;
> 
> sizeof(mystruct) = 4 !!
> 
>
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.


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