James E Wilson dixit:

>Currently, -fpack-struct is defined
>to have the same effect as attribute ((packed)) for all structures,
>which in turn is equivalent to #pragma pack(1) for all structures.

Let me please add a feature request here.

gcc warns if it cannot pack structs since they're already
in a more or less optimal form.

When you're using headers for structures e.g. used for PXE,
you've got to pack them since the data comes from the BIOS.

Using __attribute__((packed)) on these structures will then
give you a warning on i386 (and maybe none on amd64, but I
have not checked that).

When you're building with -Werror, that plainly sucks.

Luckily, my gcc 3.4.4 seems to not warn if I use #pragma pack;
that's all I request to be retained.

bye,
//mirabile
-- 
> [...] Echtzeit hat weniger mit "Speed"[...] zu tun, sondern damit, daß der
> richtige Prozeß voraussagbar rechtzeitig sein Zeitscheibchen bekommt.
Wir haben uns[...] geeinigt, dass das verwendete Echtzeit-Betriebssystem[...]
weil selbst einfachste Operationen *echt* *Zeit* brauchen.      (aus d.a.s.r)

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