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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical Re: Bell Labs or Microsoft security?
On Wed, Jan 29, 2003 at 05:26:06PM +0000, E.B. Dreger wrote:
>
> If you check before each byte. Checking for sufficient space
> first ("is there room for a 245-byte string?") is much faster.
> Besides, looking at all the bloated code using indirect function
> calls[*] and crappy code using poor algorithms... is speed really
> a concern?
>
> [*] Try profiling indirect function calls on x86, especially
> newer cores. Such instructions carry a stiff penalty... but
> there's no shortage of virtual functions in certain software.
> (Think: OWL and MFC libraries.)
Note I'm making a distinction between fixing the string libraries to
handle overflow situations better, and changing the entire OS to do array
bounds checking. One is good, the other is not.
--
Richard A Steenbergen <[email protected]> http://www.e-gerbil.net/ras
GPG Key ID: 0xF8B12CBC (7535 7F59 8204 ED1F CC1C 53AF 4C41 5ECA F8B1 2CBC)
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