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| author | Joe Perches <joe@perches.com> | 2020-08-27 05:12:01 +0200 |
|---|---|---|
| committer | Jonathan Corbet <corbet@lwn.net> | 2020-09-01 00:31:15 +0200 |
| commit | 3942ea7a10c93a379cf33710ece8fe0775950368 (patch) | |
| tree | d0aa53ec4da0590d026539af0586cd0bc84ff4c9 /Documentation/process | |
| parent | Documentation: add minimum clang/llvm version (diff) | |
| download | linux-3942ea7a10c93a379cf33710ece8fe0775950368.tar.xz linux-3942ea7a10c93a379cf33710ece8fe0775950368.zip | |
deprecated.rst: Remove now removed uninitialized_var
It's now gone from the kernel so remove it from the deprecated API text.
Signed-off-by: Joe Perches <joe@perches.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/5e10c1645dd8f735215cf54a74db0f8dd3f6cbd5.camel@perches.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Diffstat (limited to 'Documentation/process')
| -rw-r--r-- | Documentation/process/deprecated.rst | 18 |
1 files changed, 0 insertions, 18 deletions
diff --git a/Documentation/process/deprecated.rst b/Documentation/process/deprecated.rst index 918e32d76fc4..70720f00b9aa 100644 --- a/Documentation/process/deprecated.rst +++ b/Documentation/process/deprecated.rst @@ -51,24 +51,6 @@ to make sure their systems do not continue running in the face of "unreachable" conditions. (For example, see commits like `this one <https://git.kernel.org/linus/d4689846881d160a4d12a514e991a740bcb5d65a>`_.) -uninitialized_var() -------------------- -For any compiler warnings about uninitialized variables, just add -an initializer. Using the uninitialized_var() macro (or similar -warning-silencing tricks) is dangerous as it papers over `real bugs -<https://lore.kernel.org/lkml/20200603174714.192027-1-glider@google.com/>`_ -(or can in the future), and suppresses unrelated compiler warnings -(e.g. "unused variable"). If the compiler thinks it is uninitialized, -either simply initialize the variable or make compiler changes. Keep in -mind that in most cases, if an initialization is obviously redundant, -the compiler's dead-store elimination pass will make sure there are no -needless variable writes. - -As Linus has said, this macro -`must <https://lore.kernel.org/lkml/CA+55aFw+Vbj0i=1TGqCR5vQkCzWJ0QxK6CernOU6eedsudAixw@mail.gmail.com/>`_ -`be <https://lore.kernel.org/lkml/CA+55aFwgbgqhbp1fkxvRKEpzyR5J8n1vKT1VZdz9knmPuXhOeg@mail.gmail.com/>`_ -`removed <https://lore.kernel.org/lkml/CA+55aFz2500WfbKXAx8s67wrm9=yVJu65TpLgN_ybYNv0VEOKA@mail.gmail.com/>`_. - open-coded arithmetic in allocator arguments -------------------------------------------- Dynamic size calculations (especially multiplication) should not be |