> -----Original Message----- > From: Thomas Monjalon [mailto:[email protected]] > Sent: Thursday, April 4, 2019 7:18 AM > To: Eads, Gage <[email protected]>; Yigit, Ferruh > <[email protected]> > Cc: Shahaf Shuler <[email protected]>; Matan Azrad > <[email protected]>; Yongseok Koh <[email protected]>; > [email protected]; [email protected]; [email protected]; > Richardson, Bruce <[email protected]>; Ananyev, Konstantin > <[email protected]>; [email protected]; > [email protected]; [email protected]; > [email protected]; [email protected]; > [email protected] > Subject: Re: [dpdk-dev] [PATCH v6] eal/x86: add 128-bit atomic compare > exchange > > 04/04/2019 14:14, Eads, Gage: > > From: Thomas Monjalon [mailto:[email protected]] > > > 04/04/2019 14:08, Thomas Monjalon: > > > > 04/04/2019 13:47, Ferruh Yigit: > > > > > .../dpdk/x86_64-native-linuxapp-gcc/include/rte_atomic_64.h:223:3: > > > > > error: ISO C does not support ‘__int128’ types [-Werror=pedantic] > > > > > > > > We can try this kind of workaround (disable pedantic locally): > > > > > > > > https://github.com/HowardHinnant/date/pull/38/commits/177032852d5b46 > > > 14 > > > > 112ca1ab3ef42d6b41824816 > > > > > > Or better: > > > __extension__ typedef __int128 int128; > > > > > > > Taking that one step further -- RTE_STD_C11 evaluates to __extension__ > (when the STD C version is sufficiently old). > > I don't think __int128 is part of C11. Is it?
You're right, this is a compiler extension. Using '__extension__' makes more sense.
