summaryrefslogtreecommitdiff
path: root/scripts/coccinelle/tests/doublebitand.cocci
diff options
context:
space:
mode:
authorMichal Marek <mmarek@suse.cz>2011-03-09 16:15:44 +0100
committerMichal Marek <mmarek@suse.cz>2011-03-09 16:15:44 +0100
commit2d8ad8719591fa803b0d589ed057fa46f49b7155 (patch)
tree4ae051577dad1161c91dafbf4207bb10a9dc91bb /scripts/coccinelle/tests/doublebitand.cocci
parent9b4ce7bce5f30712fd926ab4599a803314a07719 (diff)
parentc56eb8fb6dccb83d9fe62fd4dc00c834de9bc470 (diff)
downloadlwn-2d8ad8719591fa803b0d589ed057fa46f49b7155.tar.gz
lwn-2d8ad8719591fa803b0d589ed057fa46f49b7155.zip
Merge commit 'v2.6.38-rc1' into kbuild/packaging
Diffstat (limited to 'scripts/coccinelle/tests/doublebitand.cocci')
-rw-r--r--scripts/coccinelle/tests/doublebitand.cocci54
1 files changed, 54 insertions, 0 deletions
diff --git a/scripts/coccinelle/tests/doublebitand.cocci b/scripts/coccinelle/tests/doublebitand.cocci
new file mode 100644
index 000000000000..9ba73d05a77e
--- /dev/null
+++ b/scripts/coccinelle/tests/doublebitand.cocci
@@ -0,0 +1,54 @@
+/// 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 |")