linux-kernel - Re: [PATCH v2] Fix invalid escape sequence warnings

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Date:   Wed, 30 Aug 2023 16:21:33 +0100
From:   Quentin Monnet <quentin@...valent.com>
To:     Vishal Chourasia <vishalc@...ux.ibm.com>
Cc:     andrii.nakryiko@...il.com, andrii@...nel.org, ast@...nel.org,
        bpf@...r.kernel.org, daniel@...earbox.net, davem@...emloft.net,
        haoluo@...gle.com, hawk@...nel.org, john.fastabend@...il.com,
        jolsa@...nel.org, kpsingh@...nel.org, kuba@...nel.org,
        linux-kernel@...r.kernel.org, martin.lau@...ux.dev,
        netdev@...r.kernel.org, sachinp@...ux.ibm.com, sdf@...gle.com,
        song@...nel.org, srikar@...ux.vnet.ibm.com, yhs@...com
Subject: Re: [PATCH v2] Fix invalid escape sequence warnings

On 29/08/2023 08:49, Vishal Chourasia wrote:
> The script bpf_doc.py generates multiple SyntaxWarnings related to invalid
> escape sequences when executed with Python 3.12. These warnings do not appear in
> Python 3.10 and 3.11 and do not affect the kernel build, which completes
> successfully.
> 
> This patch resolves these SyntaxWarnings by converting the relevant string
> literals to raw strings or by escaping backslashes. This ensures that
> backslashes are interpreted as literal characters, eliminating the warnings.
> 
> Signed-off-by: Vishal Chourasia <vishalc@...ux.ibm.com>
> Reported-by: Srikar Dronamraju <srikar@...ux.vnet.ibm.com>

Thanks! I observed that this patch fixes warnings reported by pyright in
my editor. I've also validated that the generated files (helpers man
page, syscall man page, bpf_helper_defs.h) remain unchanged.

Tested-by: Quentin Monnet <quentin@...valent.com>