On Sat, 15 Feb 2003, Brent Marykuca wrote:

Yes, I know that C itself has nothing to help, but surely the

information is available to the kernel. The virtual memory system must

maintain tables of valid/invalid address ranges and read/write

permissions for every task, so it's not inconceivable that such an API

could be made available.

I don't think that the information that the kernel has is very useful and would only give you a false sense of security. The reason is that most memory allocators request big blocks from the kernel and then give pointers inside these blocks to the application when it requests memory. So according to the kernel, a pointer may be perfectly OK, while it could point to a non-allocated or freed block. Jonas _______________________________________________ darwin-kernel mailing list | darwin-kernel@lists.apple.com Help/Unsubscribe/Archives: http://www.lists.apple.com/mailman/listinfo/darwin-kernel Do not post admin requests to the list. They will be ignored.