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50560ce6a0
Linus pointed out the benefits of C99 some years ago, especially variable declarations in loops [1]. At that time, we were not ready for the migration due to old compilers. Recently, Jakob Koschel reported a bug in list_for_each_entry(), which leaks the invalid pointer out of the loop [2]. In the discussion, we agreed that the time had come. Now that GCC 5.1 is the minimum compiler version, there is nothing to prevent us from going to -std=gnu99, or even straight to -std=gnu11. Discussions for a better list iterator implementation are ongoing, but this patch set must land first. [1] https://lore.kernel.org/all/CAHk-=wgr12JkKmRd21qh-se-_Gs69kbPgR9x4C+Es-yJV2GLkA@mail.gmail.com/ [2] https://lore.kernel.org/lkml/86C4CE7D-6D93-456B-AA82-F8ADEACA40B7@gmail.com/ -----BEGIN PGP SIGNATURE----- iQJJBAABCgAzFiEEbmPs18K1szRHjPqEPYsBB53g2wYFAmI9JqMVHG1hc2FoaXJv eUBrZXJuZWwub3JnAAoJED2LAQed4NsG3dkP/Ar7r8m4hc60kJE8JfXaxDpGOGka 2yVm0EPfwV1lFGq440p4mqKc1iRTVLNMPsyaG/ZhriIp8PlSUjXLW290Sty6Z8Pd zcxwDg09ZXkMoDX+lc2Wr9F0wpswWJjqU/TzGLP5/qkVMe46KheXIQSPJAp8tVUt u2of/MTgTVMa4r7Iex/+NFWCPr4lTkWkSfzVN/Jd1r91UOyzy4E1VFRNlXIk/Fc9 BFa67k0SHx/3FFElfwzFaejYUZjHjNzK3E1Zq8Q1vkWUxrzeEnzqTEiP7QaAi4Sa 7MbqyqQvNoPw3uvKu5kwjDE+LHMEPTsmuaKVFpAc+qCpMtZCI6g9Q48pzQsWBMO2 hZlEmYR9Zk0TpJp1flpOnNzoy7xPzNs0rcB3PaSOZyv+dTqtJ981IP+r4RNVlwje y3N9vq4RSAj/kAE/wi6FiPc/8vfbY71PbEXmg8556+kn3ne6aXl13ZrXIxz8w5jK bIgIFmrEPH7941KvFjoXhaFp/qv9hvLpWhQZu7CFRaj5V28qqUQ5TQFJREPePRtJ RFPEuOJqEGMxW/xbhcfrA1AO/y9Grxbe65e8Mph4YCfWpWaUww6vN01LC+k6UgDm Yq2u+wSFjWpRxOEPLWNsjnrZZgfdjk22O+TNOMs92X8/gXinmu3kZG5IUavahg7+ J0SsIjIXhmLGKdDm =KMDk -----END PGP SIGNATURE----- Merge tag 'kbuild-gnu11-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild update for C11 language base from Masahiro Yamada: "Kbuild -std=gnu11 updates for v5.18 Linus pointed out the benefits of C99 some years ago, especially variable declarations in loops [1]. At that time, we were not ready for the migration due to old compilers. Recently, Jakob Koschel reported a bug in list_for_each_entry(), which leaks the invalid pointer out of the loop [2]. In the discussion, we agreed that the time had come. Now that GCC 5.1 is the minimum compiler version, there is nothing to prevent us from going to -std=gnu99, or even straight to -std=gnu11. Discussions for a better list iterator implementation are ongoing, but this patch set must land first" [1] https://lore.kernel.org/all/CAHk-=wgr12JkKmRd21qh-se-_Gs69kbPgR9x4C+Es-yJV2GLkA@mail.gmail.com/ [2] https://lore.kernel.org/lkml/86C4CE7D-6D93-456B-AA82-F8ADEACA40B7@gmail.com/ * tag 'kbuild-gnu11-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: Kbuild: use -std=gnu11 for KBUILD_USERCFLAGS Kbuild: move to -std=gnu11 Kbuild: use -Wdeclaration-after-statement Kbuild: add -Wno-shift-negative-value where -Wextra is used |
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