[v1] redundant code: Fix warnings reported by Clang static code analyzer

[PATCH 13/13] monitor/hmp-cmds: Remove redundant statement in hmp_rocker_of_dpa_groups()

Posted by kuhn.chenqun@huawei.com 5 years, 8 months ago

From: Chen Qun <kuhn.chenqun@huawei.com>

Clang static code analyzer show warning:
monitor/hmp-cmds.c:2867:17: warning: Value stored to 'set' is never read
                set = true;
                ^     ~~~~

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
---
Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
---
 monitor/hmp-cmds.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
index 53bc3f76c4..84f94647cd 100644
--- a/monitor/hmp-cmds.c
+++ b/monitor/hmp-cmds.c
@@ -2864,7 +2864,6 @@ void hmp_rocker_of_dpa_groups(Monitor *mon, const QDict *qdict)
 
         if (group->has_set_eth_dst) {
             if (!set) {
-                set = true;
                 monitor_printf(mon, " set");
             }
             monitor_printf(mon, " dst %s", group->set_eth_dst);
-- 
2.23.0

Re: [PATCH 13/13] monitor/hmp-cmds: Remove redundant statement in hmp_rocker_of_dpa_groups()

Posted by Philippe Mathieu-Daudé 5 years, 8 months ago

On 2/25/20 3:09 AM, kuhn.chenqun@huawei.com wrote:
> From: Chen Qun <kuhn.chenqun@huawei.com>
> 
> Clang static code analyzer show warning:
> monitor/hmp-cmds.c:2867:17: warning: Value stored to 'set' is never read
>                  set = true;
>                  ^     ~~~~
> 
> Reported-by: Euler Robot <euler.robot@huawei.com>
> Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
> ---
> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
> ---
>   monitor/hmp-cmds.c | 1 -
>   1 file changed, 1 deletion(-)
> 
> diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c
> index 53bc3f76c4..84f94647cd 100644
> --- a/monitor/hmp-cmds.c
> +++ b/monitor/hmp-cmds.c
> @@ -2864,7 +2864,6 @@ void hmp_rocker_of_dpa_groups(Monitor *mon, const QDict *qdict)
>   
>           if (group->has_set_eth_dst) {
>               if (!set) {
> -                set = true;
>                   monitor_printf(mon, " set");
>               }
>               monitor_printf(mon, " dst %s", group->set_eth_dst);
> 

Can you move the 'set' declaration to the for() statement and also 
remove the last "set = false;"?

RE: [PATCH 13/13] monitor/hmp-cmds: Remove redundant statement in hmp_rocker_of_dpa_groups()

Posted by Chenqun (kuhn) 5 years, 8 months ago

>-----Original Message-----
>From: Philippe Mathieu-Daudé [mailto:philmd@redhat.com]
>Sent: Tuesday, February 25, 2020 5:45 PM
>To: Chenqun (kuhn) <kuhn.chenqun@huawei.com>; qemu-
>devel@nongnu.org; qemu-trivial@nongnu.org
>Cc: peter.maydell@linaro.org; Zhanghailiang
><zhang.zhanghailiang@huawei.com>; Dr. David Alan Gilbert
><dgilbert@redhat.com>
>Subject: Re: [PATCH 13/13] monitor/hmp-cmds: Remove redundant
>statement in hmp_rocker_of_dpa_groups()
>
>On 2/25/20 3:09 AM, kuhn.chenqun@huawei.com wrote:
>> From: Chen Qun <kuhn.chenqun@huawei.com>
>>
>> Clang static code analyzer show warning:
>> monitor/hmp-cmds.c:2867:17: warning: Value stored to 'set' is never read
>>                  set = true;
>>                  ^     ~~~~
>>
>> Reported-by: Euler Robot <euler.robot@huawei.com>
>> Signed-off-by: Chen Qun <kuhn.chenqun@huawei.com>
>> ---
>> Cc: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
>> ---
>>   monitor/hmp-cmds.c | 1 -
>>   1 file changed, 1 deletion(-)
>>
>> diff --git a/monitor/hmp-cmds.c b/monitor/hmp-cmds.c index
>> 53bc3f76c4..84f94647cd 100644
>> --- a/monitor/hmp-cmds.c
>> +++ b/monitor/hmp-cmds.c
>> @@ -2864,7 +2864,6 @@ void hmp_rocker_of_dpa_groups(Monitor *mon,
>> const QDict *qdict)
>>
>>           if (group->has_set_eth_dst) {
>>               if (!set) {
>> -                set = true;
>>                   monitor_printf(mon, " set");
>>               }
>>               monitor_printf(mon, " dst %s", group->set_eth_dst);
>>
>
>Can you move the 'set' declaration to the for() statement and also remove the
>last "set = false;"?
Yes,  you are right!   It will be better!    I will modify it later in V2.

Thanks.