site_archiver@lists.apple.com Delivered-To: darwin-dev@lists.apple.com On Jun 30, 2008, at 9:21 AM, J. Aaron Pendergrass wrote: Here's some sample code that demonstrates the behavior: { long stack[4] = {1,2,3,4}; long *sp = test + 4; /* top of stack is at (sp - 1) */ /* add the top of stack to the next element and pop */ *(sp - 2) += *(--sp); } One might expect this to result in a stack like: {1, 2, 7, 4} Actually, one might expect anything since: *(sp - 2) += *(--sp); is really undefined within C... just check out K&R 2.12 for example. _______________________________________________ Do not post admin requests to the list. They will be ignored. Darwin-dev mailing list (Darwin-dev@lists.apple.com) Help/Unsubscribe/Update your Subscription: http://lists.apple.com/mailman/options/darwin-dev/site_archiver%40lists.appl... Hello list, I just ran into what seems to be fairly peculiar behavior of Apple's GCC (v4.0.1 PPC) that seemed worth pointing out. It is hard to say if it is really a bug since the C spec is fairly non-deterministic, but it is peculiar. This email sent to site_archiver@lists.apple.com