From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <e12e2bd91a134fd3be8010be76b76405@plan9.bell-labs.com>
From: Dennis Ritchie <dmr@plan9.bell-labs.com>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] how to avoid a memset() optimization
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Date: Wed, 13 Nov 2002 21:48:20 -0500
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Minnich remarked

 > I feel the need. Linuxbios no longer works on gcc 3.2 because of some
 > bizarre optimisations that have gone in that break mptable parsing. One
 > person claims that you can no longer count on this:

 > struct x {
 > 	int a;
 > 	int b;
 > };

 > resulting in code in which a and b are laid out in memory in the same
 > order as in the structure (this due to C++). Structure members can get
 > reordered.

 > I can't believe this is true, but someone claims it is and I have not had
 > time to verify it.

Dunno about C++, but C99 still specifies that
structure members are laid out in the order
they are declared.

	Dennis