[dpdk-dev] [PATCH] telemetry: fix build warnings seen when using gcc 9

Musatescu, Flavia flavia.musatescu at intel.com
Fri Aug 23 18:07:20 CEST 2019

On 23/08/2019 11:01, Kevin Traynor wrote:
> On 02/07/2019 15:20, Flavia Musatescu wrote:
>> Suppress the unaligned packed member address warnings by extending
>> the telemetry library build flags with -Wno-address-of-packed-member
>> option, through the WERROR_FLAGS makefile variable.
>> With this change additional warnings are turned on to be treated as errors,
>> which causes the following build issues to be seen:
>> - no previous prototype [-Werror=missing-prototypes]
>> - initialization discards ‘const’ qualifier from pointer target type
>>    [-Werror=discarded-qualifiers]
>> - old-style function definition [-Werror=old-style-definition]
>> - variable may be used before its value is set (when using icc compiler).
>> Fixes: 0fe3a37924d4 ("telemetry: format json response when sending stats")
>> Fixes: ee5ff0d3297e ("telemetry: add client feature and sockets")
>> Fixes: 8877ac688b52 ("telemetry: introduce infrastructure")
>> Fixes: 1b756087db93 ("telemetry: add parser for client socket messages")
>> Fixes: fff6df7bf58e ("telemetry: fix using ports of different types")
>> Fixes: 4080e46c8078 ("telemetry: support global metrics")
>> Cc: stable at dpdk.org
>> Signed-off-by: Reshma Pattan <reshma.pattan at intel.com>
>> Signed-off-by: Flavia Musatescu <flavia.musatescu at intel.com>
> Hi Flavio, in the 18.11. stable branch, I had "fixed" the gcc9 warnings
> in telemetry with 2ae7bca9594d ("mk: disable packed member pointer
> warning for telemetry")
> This patch in 18.11 branch is causing the following build error:
> /root/lts/dpdk-18.11/lib/librte_telemetry/rte_telemetry.c:1822:13:
> error: initialization discards ‘const’ qualifier from pointer target
> type [-Werror=discarded-qualifiers]
>    .opt_str = "--telemetry",
>               ^~~~~~~~~~~~~
> I'm inclined to just keep the existing existing patch in stable and not
> apply this one. Or if you want to do a backport for 18.11 branch that is
> ok too. WDYT?

Hi Kevin,

I will backport the patch for 18.11. Thanks

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