Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
223 lines
3.2 KiB
Plaintext
223 lines
3.2 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-only
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///
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/// Check for opencoded min(), max() implementations.
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/// Generated patches sometimes require adding a cast to fix compile warning.
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/// Warnings/patches scope intentionally limited to a function body.
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///
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// Confidence: Medium
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// Copyright: (C) 2021 Denis Efremov ISPRAS
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// Options: --no-includes --include-headers
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//
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// Keywords: min, max
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//
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virtual report
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virtual org
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virtual context
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virtual patch
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@rmax depends on !patch@
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identifier func;
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expression x, y;
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binary operator cmp = {>, >=};
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position p;
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@@
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func(...)
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{
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<...
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* ((x) cmp@p (y) ? (x) : (y))
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...>
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}
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@rmaxif depends on !patch@
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identifier func;
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expression x, y;
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expression max_val;
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binary operator cmp = {>, >=};
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position p;
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@@
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func(...)
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{
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<...
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* if ((x) cmp@p (y)) {
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* max_val = (x);
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* } else {
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* max_val = (y);
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* }
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...>
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}
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// Ignore errcode returns.
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@errcode@
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position p;
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identifier func;
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expression x;
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binary operator cmp = {<, <=};
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@@
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func(...)
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{
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<...
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return ((x) cmp@p 0 ? (x) : 0);
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...>
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}
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@rmin depends on !patch@
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identifier func;
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expression x, y;
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binary operator cmp = {<, <=};
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position p != errcode.p;
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@@
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func(...)
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{
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<...
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* ((x) cmp@p (y) ? (x) : (y))
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...>
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}
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@rminif depends on !patch@
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identifier func;
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expression x, y;
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expression min_val;
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binary operator cmp = {<, <=};
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position p;
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@@
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func(...)
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{
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<...
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* if ((x) cmp@p (y)) {
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* min_val = (x);
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* } else {
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* min_val = (y);
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* }
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...>
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}
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@pmax depends on patch@
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identifier func;
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expression x, y;
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binary operator cmp = {>=, >};
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@@
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func(...)
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{
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<...
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- ((x) cmp (y) ? (x) : (y))
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+ max(x, y)
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...>
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}
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@pmaxif depends on patch@
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identifier func;
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expression x, y;
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expression max_val;
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binary operator cmp = {>=, >};
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@@
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func(...)
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{
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<...
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- if ((x) cmp (y)) {
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- max_val = x;
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- } else {
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- max_val = y;
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- }
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+ max_val = max(x, y);
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...>
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}
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@pmin depends on patch@
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identifier func;
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expression x, y;
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binary operator cmp = {<=, <};
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position p != errcode.p;
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@@
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func(...)
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{
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<...
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- ((x) cmp@p (y) ? (x) : (y))
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+ min(x, y)
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...>
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}
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@pminif depends on patch@
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identifier func;
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expression x, y;
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expression min_val;
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binary operator cmp = {<=, <};
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@@
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func(...)
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{
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<...
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- if ((x) cmp (y)) {
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- min_val = x;
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- } else {
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- min_val = y;
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- }
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+ min_val = min(x, y);
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...>
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}
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@script:python depends on report@
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p << rmax.p;
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@@
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for p0 in p:
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coccilib.report.print_report(p0, "WARNING opportunity for max()")
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@script:python depends on org@
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p << rmax.p;
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@@
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for p0 in p:
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coccilib.org.print_todo(p0, "WARNING opportunity for max()")
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@script:python depends on report@
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p << rmaxif.p;
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@@
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for p0 in p:
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coccilib.report.print_report(p0, "WARNING opportunity for max()")
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@script:python depends on org@
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p << rmaxif.p;
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@@
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for p0 in p:
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coccilib.org.print_todo(p0, "WARNING opportunity for max()")
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@script:python depends on report@
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p << rmin.p;
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@@
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for p0 in p:
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coccilib.report.print_report(p0, "WARNING opportunity for min()")
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@script:python depends on org@
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p << rmin.p;
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@@
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for p0 in p:
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coccilib.org.print_todo(p0, "WARNING opportunity for min()")
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@script:python depends on report@
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p << rminif.p;
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@@
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for p0 in p:
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coccilib.report.print_report(p0, "WARNING opportunity for min()")
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@script:python depends on org@
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p << rminif.p;
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@@
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for p0 in p:
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coccilib.org.print_todo(p0, "WARNING opportunity for min()")
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