linux-kernel - Re: [v3] coccinelle: misc: add array_size_dup script to detect missed overflow checks

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Message-ID: <5f91ec99-5c21-78c2-f484-76a0b5bd3e71@web.de>
Date:   Mon, 22 Jun 2020 13:17:43 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     Julia Lawall <julia.lawall@...ia.fr>,
        Denis Efremov <efremov@...ux.com>
Cc:     cocci@...teme.lip6.fr, linux-kernel@...r.kernel.org,
        Kees Cook <keescook@...omium.org>
Subject: Re: [v3] coccinelle: misc: add array_size_dup script to detect missed
 overflow checks

> > +coccilib.report.print_report(p1[0],
> > +f"WARNING: array_size is used down the code (line {p2[0].line}) to compute the same size")
>
> I get python failures for all of these messages.

This is interesting, isn't it?

> I know nothing about python.

You probably know more also about this programming language
than you express here.

> How is this supposed to work?

I suggest to take another look at information from the section
“2.4.3. Formatted string literals”.
https://docs.python.org/3/reference/lexical_analysis.html#f-strings

This software documentation provides the information “New in version 3.6”.
Will such a detail trigger any more software development consequences?

Regards,
Markus