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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-25 11:48:01 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-03-25 11:48:01 -0700 |
| commit | 50560ce6a0bdab2fc37384c52aa02c7043909d2c (patch) | |
| tree | 5f44ce74ab1a189f26bdd2d2d9a1537985b0cc19 /Documentation/process | |
| parent | 29c8c18363eee546d19bd95daa1e33c64ee74414 (diff) | |
| parent | 1e24078113ae69c741cb1b03375a9f1490db7308 (diff) | |
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
Diffstat (limited to 'Documentation/process')
| -rw-r--r-- | Documentation/process/programming-language.rst | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/process/programming-language.rst b/Documentation/process/programming-language.rst index ec474a70a02f..5fc9160ca1fa 100644 --- a/Documentation/process/programming-language.rst +++ b/Documentation/process/programming-language.rst @@ -5,9 +5,9 @@ Programming Language The kernel is written in the C programming language [c-language]_. More precisely, the kernel is typically compiled with ``gcc`` [gcc]_ -under ``-std=gnu89`` [gcc-c-dialect-options]_: the GNU dialect of ISO C90 -(including some C99 features). ``clang`` [clang]_ is also supported, see -docs on :ref:`Building Linux with Clang/LLVM <kbuild_llvm>`. +under ``-std=gnu11`` [gcc-c-dialect-options]_: the GNU dialect of ISO C11. +``clang`` [clang]_ is also supported, see docs on +:ref:`Building Linux with Clang/LLVM <kbuild_llvm>`. This dialect contains many extensions to the language [gnu-extensions]_, and many of them are used within the kernel as a matter of course. |