RE: [PATCH v3 0/4] Make sscanf() stricter

David Laight
2023-06-15T08:06:58Z

From: Demi Marie Obenour
> Sent: 14 June 2023 21:09
....
> > What sort of formats and data are being used?
>
> Base-10 or base-16 integers, with whitespace never being valid.

In which case sscanf() really isn't what you are looking for.

> > The "%s" format terminates on whitespace.
> > Even stroul() (and friends) will skip leading whitespace.
>
> Yes, which is a reason that strto*l() are just broken IMO.

They are not 'broken', that is what is useful most of the time.
The usual problem is that "020" is treated as octal.

> I’m trying to replace their uses in Xen with custom parsing code.

Then write a custom parser :-)

David

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