Messages in this thread | | | From | Segher Boessenkool <> | Subject | Re: [PATCH] ubi: kill homegrown endian macros | Date | Sat, 19 May 2007 00:00:56 +0200 |
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>> Out of curiosity, why would a compiler ever insert padding in a >> structure >> that has all its elements properly-aligned? > > Well, it might decide it would be nicer if some elements were aligned > to > 64 bits. Or to a cache line. Or something. I don't care about _why_ -- > the point is that it's _allowed_ to. Hence the original use of > __attribute__((packed)).
It's not the compiler who decides -- struct layout is dictated by the ABI you're compiling for.
Segher
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