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Coccinelle: Find doubled arguments to boolean or bit operators. 

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Nicolas Palix <npalix.work@gmail.com>
Signed-off-by: Michal Marek <mmarek@suse.cz>
This commit is contained in:
Julia Lawall 2010-10-24 23:37:32 +02:00 committed by Michal Marek
parent 10247179a7
commit 97c1cf8fdb
2 changed files with 94 additions and 0 deletions
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54
scripts/coccinelle/tests/doublebitand.cocci Normal file
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/// Find bit operations that include the same argument more than once
//# One source of false positives is when the argument performs a side
//# effect. Another source of false positives is when a neutral value
//# such as 0 for | is used to indicate no information, to maintain the
//# same structure as other similar expressions
///
// Confidence: Moderate
// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: -no_includes -include_headers
virtual context
virtual org
virtual report
@r expression@
expression E;
position p;
@@
(
* E@p
& ... & E
|
* E@p
| ... | E
|
* E@p
& ... & !E
|
* E@p
| ... | !E
|
* !E@p
& ... & E
|
* !E@p
| ... | E
)
@script:python depends on org@
p << r.p;
@@
cocci.print_main("duplicated argument to & or |",p)
@script:python depends on report@
p << r.p;
@@
coccilib.report.print_report(p[0],"duplicated argument to & or |")

40
scripts/coccinelle/tests/doubletest.cocci Normal file
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/// Find &&/|| operations that include the same argument more than once
//# A common source of false positives is when the argument performs a side
//# effect.
///
// Confidence: Moderate
// Copyright: (C) 2010 Nicolas Palix, DIKU. GPLv2.
// Copyright: (C) 2010 Julia Lawall, DIKU. GPLv2.
// Copyright: (C) 2010 Gilles Muller, INRIA/LiP6. GPLv2.
// URL: http://coccinelle.lip6.fr/
// Comments:
// Options: -no_includes -include_headers
virtual context
virtual org
virtual report
@r expression@
expression E;
position p;
@@
(
* E@p
|| ... || E
|
* E@p
&& ... && E
)
@script:python depends on org@
p << r.p;
@@
cocci.print_main("duplicated argument to && or ||",p)
@script:python depends on report@
p << r.p;
@@
coccilib.report.print_report(p[0],"duplicated argument to && or ||")