Re: Structure tag alignment problem

alex@vmars.tuwien.ac.at (Alexander Vrchoticky)
Sun, 15 Dec 1991 18:54:08 GMT

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Newsgroups: comp.compilers
From: alex@vmars.tuwien.ac.at (Alexander Vrchoticky)
Keywords: C, GCC, question
Organization: Technical University Vienna, Dept. of Realtime Systems, AUSTRIA
References: 91-12-064
Date: Sun, 15 Dec 1991 18:54:08 GMT

jgg@pdn.paradyne.com (Joe Gabriel) writes:


> [description of different alignment of c structures
> on different processors/compilers and the resulting problems when using
> structures to communicate between processors deleted]
>
>[It shouldn't be too hard to change GCC to align everything on a word
>boundary -- look at the source file stor-layout.c. -John]


At the risk of stating the obvious, such a solution should only be
attempted when very good reasons for not using an external, portable
representation exist.
--
Alexander Vrchoticky alex@vmars.tuwien.ac.at
TU Vienna, CS/Real-Time Systems +43/1/58801-8168
[Good point, though in this case I believe that the two processors are
using shared memory, and reorganizing all the structures on the fly would
entail a significant performance hit. -John]
--


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