e4655196e2
Most of the people prefer: return ret < 0 ? ret: 0; than: return min(ret, 0); Let's tweak the cocci file to ignore those lines completely. Signed-off-by: Ricardo Ribalda <ribalda@chromium.org> Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
223 lines
3.2 KiB
Plaintext
223 lines
3.2 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0-only
|
|
///
|
|
/// Check for opencoded min(), max() implementations.
|
|
/// Generated patches sometimes require adding a cast to fix compile warning.
|
|
/// Warnings/patches scope intentionally limited to a function body.
|
|
///
|
|
// Confidence: Medium
|
|
// Copyright: (C) 2021 Denis Efremov ISPRAS
|
|
// Options: --no-includes --include-headers
|
|
//
|
|
// Keywords: min, max
|
|
//
|
|
|
|
|
|
virtual report
|
|
virtual org
|
|
virtual context
|
|
virtual patch
|
|
|
|
@rmax depends on !patch@
|
|
identifier func;
|
|
expression x, y;
|
|
binary operator cmp = {>, >=};
|
|
position p;
|
|
@@
|
|
|
|
func(...)
|
|
{
|
|
<...
|
|
* ((x) cmp@p (y) ? (x) : (y))
|
|
...>
|
|
}
|
|
|
|
@rmaxif depends on !patch@
|
|
identifier func;
|
|
expression x, y;
|
|
expression max_val;
|
|
binary operator cmp = {>, >=};
|
|
position p;
|
|
@@
|
|
|
|
func(...)
|
|
{
|
|
<...
|
|
* if ((x) cmp@p (y)) {
|
|
* max_val = (x);
|
|
* } else {
|
|
* max_val = (y);
|
|
* }
|
|
...>
|
|
}
|
|
|
|
// Ignore errcode returns.
|
|
@errcode@
|
|
position p;
|
|
identifier func;
|
|
expression x;
|
|
binary operator cmp = {<, <=};
|
|
@@
|
|
|
|
func(...)
|
|
{
|
|
<...
|
|
return ((x) cmp@p 0 ? (x) : 0);
|
|
...>
|
|
}
|
|
|
|
@rmin depends on !patch@
|
|
identifier func;
|
|
expression x, y;
|
|
binary operator cmp = {<, <=};
|
|
position p != errcode.p;
|
|
@@
|
|
|
|
func(...)
|
|
{
|
|
<...
|
|
* ((x) cmp@p (y) ? (x) : (y))
|
|
...>
|
|
}
|
|
|
|
@rminif depends on !patch@
|
|
identifier func;
|
|
expression x, y;
|
|
expression min_val;
|
|
binary operator cmp = {<, <=};
|
|
position p;
|
|
@@
|
|
|
|
func(...)
|
|
{
|
|
<...
|
|
* if ((x) cmp@p (y)) {
|
|
* min_val = (x);
|
|
* } else {
|
|
* min_val = (y);
|
|
* }
|
|
...>
|
|
}
|
|
|
|
@pmax depends on patch@
|
|
identifier func;
|
|
expression x, y;
|
|
binary operator cmp = {>=, >};
|
|
@@
|
|
|
|
func(...)
|
|
{
|
|
<...
|
|
- ((x) cmp (y) ? (x) : (y))
|
|
+ max(x, y)
|
|
...>
|
|
}
|
|
|
|
@pmaxif depends on patch@
|
|
identifier func;
|
|
expression x, y;
|
|
expression max_val;
|
|
binary operator cmp = {>=, >};
|
|
@@
|
|
|
|
func(...)
|
|
{
|
|
<...
|
|
- if ((x) cmp (y)) {
|
|
- max_val = x;
|
|
- } else {
|
|
- max_val = y;
|
|
- }
|
|
+ max_val = max(x, y);
|
|
...>
|
|
}
|
|
|
|
@pmin depends on patch@
|
|
identifier func;
|
|
expression x, y;
|
|
binary operator cmp = {<=, <};
|
|
position p != errcode.p;
|
|
@@
|
|
|
|
func(...)
|
|
{
|
|
<...
|
|
- ((x) cmp@p (y) ? (x) : (y))
|
|
+ min(x, y)
|
|
...>
|
|
}
|
|
|
|
@pminif depends on patch@
|
|
identifier func;
|
|
expression x, y;
|
|
expression min_val;
|
|
binary operator cmp = {<=, <};
|
|
@@
|
|
|
|
func(...)
|
|
{
|
|
<...
|
|
- if ((x) cmp (y)) {
|
|
- min_val = x;
|
|
- } else {
|
|
- min_val = y;
|
|
- }
|
|
+ min_val = min(x, y);
|
|
...>
|
|
}
|
|
|
|
@script:python depends on report@
|
|
p << rmax.p;
|
|
@@
|
|
|
|
for p0 in p:
|
|
coccilib.report.print_report(p0, "WARNING opportunity for max()")
|
|
|
|
@script:python depends on org@
|
|
p << rmax.p;
|
|
@@
|
|
|
|
for p0 in p:
|
|
coccilib.org.print_todo(p0, "WARNING opportunity for max()")
|
|
|
|
@script:python depends on report@
|
|
p << rmaxif.p;
|
|
@@
|
|
|
|
for p0 in p:
|
|
coccilib.report.print_report(p0, "WARNING opportunity for max()")
|
|
|
|
@script:python depends on org@
|
|
p << rmaxif.p;
|
|
@@
|
|
|
|
for p0 in p:
|
|
coccilib.org.print_todo(p0, "WARNING opportunity for max()")
|
|
|
|
@script:python depends on report@
|
|
p << rmin.p;
|
|
@@
|
|
|
|
for p0 in p:
|
|
coccilib.report.print_report(p0, "WARNING opportunity for min()")
|
|
|
|
@script:python depends on org@
|
|
p << rmin.p;
|
|
@@
|
|
|
|
for p0 in p:
|
|
coccilib.org.print_todo(p0, "WARNING opportunity for min()")
|
|
|
|
@script:python depends on report@
|
|
p << rminif.p;
|
|
@@
|
|
|
|
for p0 in p:
|
|
coccilib.report.print_report(p0, "WARNING opportunity for min()")
|
|
|
|
@script:python depends on org@
|
|
p << rminif.p;
|
|
@@
|
|
|
|
for p0 in p:
|
|
coccilib.org.print_todo(p0, "WARNING opportunity for min()")
|