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Re: [PATCH v3] tools/xenpmd: Fix gcc10 snprintf warning
- To: Wei Liu <wl@xxxxxxx>
- From: Bertrand Marquis <Bertrand.Marquis@xxxxxxx>
- Date: Fri, 16 Oct 2020 13:43:48 +0000
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- Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Ian Jackson <iwj@xxxxxxxxxxxxxx>
- Delivery-date: Fri, 16 Oct 2020 13:44:13 +0000
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- Thread-topic: [PATCH v3] tools/xenpmd: Fix gcc10 snprintf warning
> On 16 Oct 2020, at 14:28, Wei Liu <wl@xxxxxxx> wrote:
>
> On Thu, Oct 15, 2020 at 10:16:09AM +0100, Bertrand Marquis wrote:
>> Add a check for snprintf return code and ignore the entry if we get an
>> error. This should in fact never happen and is more a trick to make gcc
>> happy and prevent compilation errors.
>>
>> This is solving the following gcc warning when compiling for arm32 host
>> platforms with optimization activated:
>> xenpmd.c:92:37: error: '%s' directive output may be truncated writing
>> between 4 and 2147483645 bytes into a region of size 271
>> [-Werror=format-truncation=]
>>
>> This is also solving the following Debian bug:
>> https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=970802
>>
>> Signed-off-by: Bertrand Marquis <bertrand.marquis@xxxxxxx>
>
> Acked-by: Wei Liu <wl@xxxxxxx>
Thanks :-)
Bertrand
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