123 lines
1.5 KiB
Plaintext
123 lines
1.5 KiB
Plaintext
|
// SPDX-License-Identifier: GPL-2.0-only
|
||
|
|
///
|
||
|
|
/// Check for opencoded swap() implementation.
|
||
|
|
///
|
||
|
|
// Confidence: High
|
||
|
|
// Copyright: (C) 2021 Denis Efremov ISPRAS
|
||
|
|
// Options: --no-includes --include-headers
|
||
|
|
//
|
||
|
|
// Keywords: swap
|
||
|
|
//
|
||
|
|
|
||
|
|
virtual patch
|
||
|
|
virtual org
|
||
|
|
virtual report
|
||
|
|
virtual context
|
||
|
|
|
||
|
|
@rvar depends on !patch@
|
||
|
|
identifier tmp;
|
||
|
|
expression a, b;
|
||
|
|
type T;
|
||
|
|
position p;
|
||
|
|
@@
|
||
|
|
|
||
|
|
(
|
||
|
|
* T tmp;
|
||
|
|
|
|
||
|
|
* T tmp = 0;
|
||
|
|
|
|
||
|
|
* T *tmp = NULL;
|
||
|
|
)
|
||
|
|
... when != tmp
|
||
|
|
* tmp = a;
|
||
|
|
* a = b;@p
|
||
|
|
* b = tmp;
|
||
|
|
... when != tmp
|
||
|
|
|
||
|
|
@r depends on !patch@
|
||
|
|
identifier tmp;
|
||
|
|
expression a, b;
|
||
|
|
position p != rvar.p;
|
||
|
|
@@
|
||
|
|
|
||
|
|
* tmp = a;
|
||
|
|
* a = b;@p
|
||
|
|
* b = tmp;
|
||
|
|
|
||
|
|
@rpvar depends on patch@
|
||
|
|
identifier tmp;
|
||
|
|
expression a, b;
|
||
|
|
type T;
|
||
|
|
@@
|
||
|
|
|
||
|
|
(
|
||
|
|
- T tmp;
|
||
|
|
|
|
||
|
|
- T tmp = 0;
|
||
|
|
|
|
||
|
|
- T *tmp = NULL;
|
||
|
|
)
|
||
|
|
... when != tmp
|
||
|
|
- tmp = a;
|
||
|
|
- a = b;
|
||
|
|
- b = tmp
|
||
|
|
+ swap(a, b)
|
||
|
|
;
|
||
|
|
... when != tmp
|
||
|
|
|
||
|
|
@rp depends on patch@
|
||
|
|
identifier tmp;
|
||
|
|
expression a, b;
|
||
|
|
@@
|
||
|
|
|
||
|
|
- tmp = a;
|
||
|
|
- a = b;
|
||
|
|
- b = tmp
|
||
|
|
+ swap(a, b)
|
||
|
|
;
|
||
|
|
|
||
|
|
@depends on patch && (rpvar || rp)@
|
||
|
|
@@
|
||
|
|
|
||
|
|
(
|
||
|
|
for (...;...;...)
|
||
|
|
- {
|
||
|
|
swap(...);
|
||
|
|
- }
|
||
|
|
|
|
||
|
|
while (...)
|
||
|
|
- {
|
||
|
|
swap(...);
|
||
|
|
- }
|
||
|
|
|
|
||
|
|
if (...)
|
||
|
|
- {
|
||
|
|
swap(...);
|
||
|
|
- }
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
@script:python depends on report@
|
||
|
|
p << r.p;
|
||
|
|
@@
|
||
|
|
|
||
|
|
coccilib.report.print_report(p[0], "WARNING opportunity for swap()")
|
||
|
|
|
||
|
|
@script:python depends on org@
|
||
|
|
p << r.p;
|
||
|
|
@@
|
||
|
|
|
||
|
|
coccilib.org.print_todo(p[0], "WARNING opportunity for swap()")
|
||
|
|
|
||
|
|
@script:python depends on report@
|
||
|
|
p << rvar.p;
|
||
|
|
@@
|
||
|
|
|
||
|
|
coccilib.report.print_report(p[0], "WARNING opportunity for swap()")
|
||
|
|
|
||
|
|
@script:python depends on org@
|
||
|
|
p << rvar.p;
|
||
|
|
@@
|
||
|
|
|
||
|
|
coccilib.org.print_todo(p[0], "WARNING opportunity for swap()")
|