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From: Markus Elfring <Markus.Elfring@web.de>
To: Julia Lawall <julia.lawall@inria.fr>, stracelabs@gmail.com
Cc: cocci@systeme.lip6.fr
Subject: Re: [Cocci] Replacing printf() parameters according to used data types
Date: Sat, 30 Nov 2019 16:11:03 +0100
Message-ID: <345f973e-6597-3dfb-7dd3-7790a982c152@web.de> (raw)
In-Reply-To: <alpine.DEB.2.21.1911292154450.3140@hadrien>

> Maybe this will help you:
>
> @r@
> format list d;
> @@
>
> "%@d@"
>
> @script:ocaml s@
> d << r.d;
> res;
> @@
> res := make_expr ("\""^(String.concat "%s" (Str.split_delim
> (Str.regexp_string "%d") d))^"\"")

Such a replacement approach might look promising.
But I got the impression that another aspect can be more important
for the safe data processing of format strings.
The passed function parameters should fit to the specified
data conversions in the string.

Can the Coccinelle software help any more to group or mark
update candidates from the expression list in appropriate ways?

Regards,
Markus
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Thread overview: 31+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-28  2:11 [Cocci] Replacing printf/format calls based on the data-type Strace Labs
2019-11-28  7:07 ` Julia Lawall
2019-11-28 17:45   ` Strace Labs
2019-11-29 14:48   ` [Cocci] Replacing printf() parameters according to used data types Markus Elfring
2019-11-28  7:50 ` Markus Elfring
2019-11-29  0:35   ` Jorge Pereira
2019-11-29  8:29     ` Markus Elfring
2019-11-29 10:57       ` Strace Labs
2019-11-29 12:33         ` Markus Elfring
2019-11-29 14:47           ` Strace Labs
2019-11-29 16:08             ` Markus Elfring
2019-11-29 17:19               ` Strace Labs
2019-11-29 17:45                 ` Markus Elfring
2019-11-29 20:55             ` Julia Lawall
2019-11-30  2:25               ` Strace Labs
2019-11-30  6:35                 ` Julia Lawall
2019-11-30  8:46                 ` Markus Elfring
2019-12-01  8:00                 ` [Cocci] Changing format string usage with SmPL? Markus Elfring
2019-12-03  3:30                   ` Strace Labs
2019-12-03  5:18                     ` Julia Lawall
2019-12-03 13:28                       ` Markus Elfring
2019-12-03 15:43                       ` [Cocci] Generation of expression lists by SmPL script rules? Markus Elfring
2019-12-03 17:28                       ` [Cocci] Changing format string usage with SmPL? Strace Labs
2019-12-04  0:21                         ` Strace Labs
2019-12-06 19:36                           ` Markus Elfring
2019-12-07  7:49                           ` Markus Elfring
2019-12-04  6:47                         ` Julia Lawall
2019-12-06 19:44                           ` Markus Elfring
2019-12-06 19:20                         ` Markus Elfring
2019-12-03 10:01                     ` Markus Elfring
2019-11-30 15:11               ` Markus Elfring [this message]

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