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Re: [Qemu-devel] [PATCH v2] dump-guest-memory.py: fix "You can't do that


From: Laszlo Ersek
Subject: Re: [Qemu-devel] [PATCH v2] dump-guest-memory.py: fix "You can't do that without a process to debug"
Date: Tue, 12 Dec 2017 18:30:40 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.0

On 12/12/17 18:26, address@hidden wrote:
> Hi,
> 
> This series seems to have some coding style problems. See output below for
> more information:
> 
> Message-id: address@hidden
> Subject: [Qemu-devel] [PATCH v2] dump-guest-memory.py: fix "You can't do that 
> without a process to debug"
> Type: series
> 
> === TEST SCRIPT BEGIN ===
> #!/bin/bash
> 
> BASE=base
> n=1
> total=$(git log --oneline $BASE.. | wc -l)
> failed=0
> 
> git config --local diff.renamelimit 0
> git config --local diff.renames True
> 
> commits="$(git log --format=%H --reverse $BASE..)"
> for c in $commits; do
>     echo "Checking PATCH $n/$total: $(git log -n 1 --format=%s $c)..."
>     if ! git show $c --format=email | ./scripts/checkpatch.pl --mailback -; 
> then
>         failed=1
>         echo
>     fi
>     n=$((n+1))
> done
> 
> exit $failed
> === TEST SCRIPT END ===
> 
> Updating 3c8cf5a9c21ff8782164d1def7f44bd888713384
> From https://github.com/patchew-project/qemu
>  t [tag update]            patchew/address@hidden -> patchew/address@hidden
>  * [new tag]               patchew/address@hidden -> patchew/address@hidden
> Switched to a new branch 'test'
> 7c0544b1a7 dump-guest-memory.py: fix "You can't do that without a process to 
> debug"
> 
> === OUTPUT BEGIN ===
> Checking PATCH 1/1: dump-guest-memory.py: fix "You can't do that without a 
> process to debug"...
> ERROR: Use of volatile is usually wrong: see 
> Documentation/volatile-considered-harmful.txt
> #46: FILE: hw/misc/vmcoreinfo.c:39:
> +    static VMCoreInfoState * volatile vmcoreinfo_state G_GNUC_UNUSED;
> 
> total: 1 errors, 0 warnings, 24 lines checked
> 
> Your patch has style problems, please review.  If any of these errors
> are false positives report them to the maintainer, see
> CHECKPATCH in MAINTAINERS.
> 
> === OUTPUT END ===
> 
> Test command exited with code: 1
> 
> 
> ---
> Email generated automatically by Patchew [http://patchew.org/].
> Please send your feedback to address@hidden
> 

"volatile" is required in this case; otherwise GCC would be entirely
justified to eliminate the variable.



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