linux-kernel - Re: Coccinelle: badzero.cocci failure

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Message-ID: <alpine.DEB.2.20.1711150721060.2147@hadrien>
Date:   Wed, 15 Nov 2017 07:22:12 +0100 (CET)
From:   Julia Lawall <julia.lawall@...6.fr>
To:     Masahiro Yamada <yamada.masahiro@...ionext.com>
cc:     cocci@...teme.lip6.fr, Nicolas Palix <nicolas.palix@...g.fr>,
        Gilles Muller <Gilles.Muller@...6.fr>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux Kbuild mailing list <linux-kbuild@...r.kernel.org>
Subject: Re: Coccinelle: badzero.cocci failure



On Tue, 14 Nov 2017, Masahiro Yamada wrote:

> Hi Julia,
>
>
> 2017-11-14 18:07 GMT+09:00 Julia Lawall <julia.lawall@...6.fr>:
> >> coccicheck failed
> >> $ cat cocci-debug.txt
> >> /home/masahiro/bin/spatch -D report --no-show-diff --very-quiet
> >> --cocci-file scripts/coccinelle/null/badzero.cocci --dir . -I
> >> ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I
> >> ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I
> >> ./include/uapi -I ./include/generated/uapi --include
> >> ./include/linux/kconfig.h --jobs 8 --chunksize 1
> >> Fatal error: exception
> >> Yes_prepare_ocamlcocci.LinkFailure("/tmp/ocaml_cocci_18c9f9.cmxs")
> >
> > Does your Coccinelle support OCaml?  I'm not sure what is the proper way to
> > check for this, but in my coccinelle/config.log file I have
> >
> > FEATURE_OCAML='1'
>
>
> Yes.  I also see this line in my config.log
>
>
> > spatch --version gives:
> >
> > spatch version 1.0.6-00147-g19f9421 compiled with OCaml version 4.02.3
> > Flags passed to the configure script: [none]
> > Python scripting support: yes
> > Syntax of regular expresssions: Str
>
> My version output looks like follows:
>
> $ spatch --version
> spatch version 1.0.6-00345-g2ca0bef compiled with OCaml version 4.02.3
> Flags passed to the configure script: --prefix=/home/masahiro
> Python scripting support: yes
> Syntax of regular expresssions: PCRE
>
>
> > I'm not sure why it doesn't give feedback on whether OCaml scripting is
> > supported.  I will check on this.

Can you try the following semantic patch (called eg nothing.cocci):

@script:ocaml@
@@

()

on any .c file, ie

spatch --sp-file nothing.cocci test.c

julia