site_archiver@lists.apple.com Delivered-To: darwin-kernel@lists.apple.com William Kucharski writes:

On Dec 22, 2004, at 1:12 PM, Andrew Gallatin wrote:

...

Thanks for the details, but I'm not very familiar with the ppc architecture. What's a common programming error that can result in this behaviour on ppc? Could returning from a function after it clobbers the stack result in this behaviour? If so, are there any "red-zone" options in the Darwin kernel that could catch something like this?

If your programmers are using assembly, inspection of their code can help find this sort of thing, and it's usually a typo (e.g. "Oh, I meant to clear %r10, not %r1...")

Nope, no assembly except for a few inline sync instructions.

If they're using C, overwriting the stack could easily cause this (say going beyond the bounds of an automatic array or variable.)

That's probably it, I'll start searching for changes that fit this bill. Thanks for your help, Drew _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-kernel mailing list (Darwin-kernel@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-kernel/site_archiver%40lists.a... This email sent to site_archiver@lists.apple.com