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From:	max AT alcyone DOT darkside DOT com (Erik Max Francis)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Determining proper sizeof a struct
Date:	Tue, 31 Oct 95 07:34:57 PST
References:	<DHAzvK DOT 7zn AT jade DOT mv DOT net>
Organization:	&tSftDotIotE
Lines:	17
To:	djgpp AT sun DOT soe DOT clarkson DOT edu
Dj-Gateway:	from newsgroup comp.os.msdos.djgpp

Eli Zaretskii <eliz AT is DOT elta DOT co DOT il> writes:

> Gcc (and other 32-bit compilers) pad structures so that they could be 
> accessed faster by 32-bit processors (there is a penalty of accessing 
> unaligned addresses).  It is usually wrong to assume that sizeof of a 
> struct is the sum of the sizes of its fields; . . .

In fact, the ANSI C standard indicates that there can be padding, so 
assuming that thtere is no padding is not only not generally right, 
but also violates the ANSI standard.


Erik Max Francis, &tSftDotIotE || uuwest!alcyone!max, max AT alcyone DOT darkside DOT com
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