linux-kernel - Re: [PATCH] scripts/gdb: fix lx-version for gdb 7.3-

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Message-ID: <62b6aff8-8ca2-7d6c-d810-64d10a25f2d4@siemens.com>
Date:   Wed, 17 Oct 2018 08:56:44 +0200
From:   Jan Kiszka <jan.kiszka@...mens.com>
To:     Du Changbin <changbin.du@...il.com>, kbingham@...nel.org
Cc:     linux-kernel@...r.kernel.org
Subject: Re: [PATCH] scripts/gdb: fix lx-version for gdb 7.3-

On 17.10.18 04:36, Du Changbin wrote:
> For gdb version less than 7.3, lx-version only one character.

                                           ^^^ prints?

> (gdb) lx-version
> L(gdb)
> 
> This can be fixed by casting 'linux_banner' as (char *).
> (gdb) lx-version
> Linux version 4.19.0-rc1+ (changbin@...r) (gcc version 7.3.0 (Ubuntu 7.3.0-16ubuntu3)) #21 SMP Sat Sep 1 21:43:30 CST 2018
> 
> gdb 7.4 seems to be no such issue.
> 
> Signed-off-by: Du Changbin <changbin.du@...il.com>
> ---
>   scripts/gdb/linux/proc.py | 2 +-
>   1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/scripts/gdb/linux/proc.py b/scripts/gdb/linux/proc.py
> index 086d27223c0c..0aebd7565b03 100644
> --- a/scripts/gdb/linux/proc.py
> +++ b/scripts/gdb/linux/proc.py
> @@ -41,7 +41,7 @@ class LxVersion(gdb.Command):
>   
>       def invoke(self, arg, from_tty):
>           # linux_banner should contain a newline
> -        gdb.write(gdb.parse_and_eval("linux_banner").string())
> +        gdb.write(gdb.parse_and_eval("(char *)linux_banner").string())
>   
>   LxVersion()
>   
> 

Looks good to me otherwise.

Jan

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