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From: Stephen Hemminger <stephen@networkplumber.org>
To: "Montorsi, Francesco" <fmontorsi@empirix.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] warnings when including DPDK headers from a C++17 source file
Date: Fri, 13 Jul 2018 08:52:05 -0700	[thread overview]
Message-ID: <20180713085205.1a255bf3@xeon-e3> (raw)
In-Reply-To: <1531489881821.76380@empirix.com>

On Fri, 13 Jul 2018 13:51:21 +0000
"Montorsi, Francesco" <fmontorsi@empirix.com> wrote:

> Hi all,
> 
> 
> I just noticed that, because of the removal of the "register" keyword in C++17, when I compile my DPDK-enabled code with -std=c++17 I get the following:
> 
> 
> 
> In file included from ../../../Third-Party/cpp-libs/dpdk/include/rte_ether.h:53:0,
>                  from ../../../Third-Party/cpp-libs/dpdk/include/rte_ethdev.h:186,
>                  from HwEmulCaptureDPDK.cpp:43:
> ../../../Third-Party/cpp-libs/dpdk/include/rte_byteorder.h: In function 'uint16_t rte_arch_bswap16(uint16_t)':
> ../../../Third-Party/cpp-libs/dpdk/include/rte_byteorder.h:57:20: warning: ISO C++1z does not allow 'register' storage class specifier [-Wregister]
>   register uint16_t x = _x;
>                     ^
> ../../../Third-Party/cpp-libs/dpdk/include/rte_byteorder.h: In function 'uint32_t rte_arch_bswap32(uint32_t)':
> ../../../Third-Party/cpp-libs/dpdk/include/rte_byteorder.h:72:20: warning: ISO C++1z does not allow 'register' storage class specifier [-Wregister]
>   register uint32_t x = _x;
>                     ^
> In file included from ../../../Third-Party/cpp-libs/dpdk/include/rte_byteorder.h:121:0,
>                  from ../../../Third-Party/cpp-libs/dpdk/include/rte_ether.h:53,
>                  from ../../../Third-Party/cpp-libs/dpdk/include/rte_ethdev.h:186,
>                  from HwEmulCaptureDPDK.cpp:43:
> ../../../Third-Party/cpp-libs/dpdk/include/rte_byteorder_64.h: In function 'uint64_t rte_arch_bswap64(uint64_t)':
> ../../../Third-Party/cpp-libs/dpdk/include/rte_byteorder_64.h:52:20: warning: ISO C++1z does not allow 'register' storage class specifier [-Wregister]
>   register uint64_t x = _x;
>                     ^
> 
> 
> ?Just thought to let you know... that's a small issue for me since I'm using -Werror
> 
> 
> Thanks,
> Francesco
> 
> 

Why is DPDK code using register keyword at all? It is ignored by modern compilers.

  reply	other threads:[~2018-07-13 15:52 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-07-13 13:51 Montorsi, Francesco
2018-07-13 15:52 ` Stephen Hemminger [this message]
2018-07-15 13:00   ` Montorsi, Francesco

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