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Re: alignment errors on armel: what to do?

On Wed, Sep 30, 2009 at 08:32:16AM -0700, Weidong Li wrote:

> > given armel's failures on alignment errors (and i386's apparent ability
> > to handle them gracefully -- try passing f+1 to test() ) i find it
> > curious that gcc would be *more* cautious about over-alignment on i386
> > than on armel.

> For armel, this is the expected behavior according to eabi, which uses
> "natural" alignment.  Gcc for i386, I guess, uses the default alignment
> of 4 bytes.

Nope, as of a recent gcc upgrade (4.2 or 4.3 I think?), there's no guarantee
of a 4-byte alignment on i386 either; we started seeing lots of failures
because of a 2-byte alignment being used in practice.

Steve Langasek                   Give me a lever long enough and a Free OS
Debian Developer                   to set it on, and I can move the world.
Ubuntu Developer                                    http://www.debian.org/
slangasek@ubuntu.com                                     vorlon@debian.org

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