FM / misc

/usr/src/linux-headers-5.15.0-181/scripts/coccinelle/misc/

/usr/src/linux-headers-5.15.0-181/scripts/coccinelle/misc

Name	Size	Mode	Actions
add_namespace.cocci	837	0644	edit dl rm
array_size.cocci	1729	0644	edit dl rm
array_size_dup.cocci	4894	0644	edit dl rm
badty.cocci	1729	0644	edit dl rm
boolconv.cocci	1506	0644	edit dl rm
boolreturn.cocci	698	0644	edit dl rm
bugon.cocci	1515	0644	edit dl rm
cond_no_effect.cocci	2121	0644	edit dl rm
cstptr.cocci	852	0644	edit dl rm
doubleinit.cocci	1408	0644	edit dl rm
excluded_middle.cocci	677	0644	edit dl rm
flexible_array.cocci	1821	0644	edit dl rm
ifaddr.cocci	684	0644	edit dl rm
ifcol.cocci	1258	0644	edit dl rm
irqf_oneshot.cocci	2007	0644	edit dl rm
minmax.cocci	3288	0644	edit dl rm
newline_in_nl_msg.cocci	1650	0644	edit dl rm
noderef.cocci	1219	0644	edit dl rm
of_table.cocci	1366	0644	edit dl rm
orplus.cocci	1053	0644	edit dl rm
returnvar.cocci	1286	0644	edit dl rm
semicolon.cocci	1095	0644	edit dl rm
swap.cocci	1517	0644	edit dl rm
uninitialized_var.cocci	1629	0644	edit dl rm
warn.cocci	1686	0644	edit dl rm

Edit: /usr/src/linux-headers-5.15.0-181/scripts/coccinelle/misc/uninitialized_var.cocci (1629B)

// SPDX-License-Identifier: GPL-2.0-only
///
/// Please, don't reintroduce uninitialized_var().
///
/// From Documentation/process/deprecated.rst,
/// commit 4b19bec97c88 ("docs: deprecated.rst: Add uninitialized_var()"):
///  For any compiler warnings about uninitialized variables, just add
///  an initializer. Using warning-silencing tricks is dangerous as it
///  papers over real bugs (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.
///
/// Later, commit 3942ea7a10c9 ("deprecated.rst: Remove now removed
/// uninitialized_var") removed this section because all initializations of
/// this kind were cleaned-up from the kernel. This cocci rule checks that
/// the macro is not explicitly or implicitly reintroduced.
///
// Confidence: High
// Copyright: (C) 2020 Denis Efremov ISPRAS
// Options: --no-includes --include-headers
//

virtual context
virtual report
virtual org

@r@
identifier var;
type T;
position p;
@@

(
* T var =@p var;
|
* T var =@p *(&(var));
|
* var =@p var
|
* var =@p *(&(var))
)

@script:python depends on report@
p << r.p;
@@

coccilib.report.print_report(p[0], "WARNING this kind of initialization is deprecated")

@script:python depends on org@
p << r.p;
@@

coccilib.org.print_todo(p[0], "WARNING this kind of initialization is deprecated")

// SPDX-License-Identifier: GPL-2.0-only /// /// Please, don't reintroduce uninitialized_var(). /// /// From Documentation/process/deprecated.rst, /// commit 4b19bec97c88 ("docs: deprecated.rst: Add uninitialized_var()"): /// For any compiler warnings about uninitialized variables, just add /// an initializer. Using warning-silencing tricks is dangerous as it /// papers over real bugs (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. /// /// Later, commit 3942ea7a10c9 ("deprecated.rst: Remove now removed /// uninitialized_var") removed this section because all initializations of /// this kind were cleaned-up from the kernel. This cocci rule checks that /// the macro is not explicitly or implicitly reintroduced. /// // Confidence: High // Copyright: (C) 2020 Denis Efremov ISPRAS // Options: --no-includes --include-headers // virtual context virtual report virtual org @r@ identifier var; type T; position p; @@ ( * T var =@p var; | * T var =@p *(&(var)); | * var =@p var | * var =@p *(&(var)) ) @script:python depends on report@ p << r.p; @@ coccilib.report.print_report(p[0], "WARNING this kind of initialization is deprecated") @script:python depends on org@ p << r.p; @@ coccilib.org.print_todo(p[0], "WARNING this kind of initialization is deprecated")