diff options
| author | Julia Lawall <Julia.Lawall@lip6.fr> | 2013-02-02 20:19:55 +0400 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2013-02-22 17:26:00 +0400 |
| commit | 24f0c2d6ff859fbca45fd765f0d241528bdb4365 (patch) | |
| tree | 566add45c05935086d1a01ec2c60081bbf57723e /scripts | |
| parent | 5303265a48eb276b8cdee84f8e91e7f971224c5e (diff) | |
| download | linux-24f0c2d6ff859fbca45fd765f0d241528bdb4365.tar.xz | |
scripts/coccinelle: find constant additions that could be bit ors
Semantic patch (http://coccinelle.lip6.fr/) to check for constants that are
added but are used elsewhere as bitmasks.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'scripts')
| -rw-r--r-- | scripts/coccinelle/misc/orplus.cocci | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/scripts/coccinelle/misc/orplus.cocci b/scripts/coccinelle/misc/orplus.cocci new file mode 100644 index 000000000000..4a28cef1484e --- /dev/null +++ b/scripts/coccinelle/misc/orplus.cocci @@ -0,0 +1,55 @@ +/// Check for constants that are added but are used elsewhere as bitmasks +/// The results should be checked manually to ensure that the nonzero +/// bits in the two constants are actually disjoint. +/// +// Confidence: Moderate +// Copyright: (C) 2013 Julia Lawall, INRIA/LIP6. GPLv2. +// Copyright: (C) 2013 Gilles Muller, INRIA/LIP6. GPLv2. +// URL: http://coccinelle.lip6.fr/ +// Comments: +// Options: -no_includes -include_headers + +virtual org +virtual report +virtual context + +@r@ +constant c; +identifier i; +expression e; +@@ + +( +e | c@i +| +e & c@i +| +e |= c@i +| +e &= c@i +) + +@s@ +constant r.c,c1; +identifier i1; +position p; +@@ + +( + c1 + c - 1 +| +*c1@i1 +@p c +) + +@script:python depends on org@ +p << s.p; +@@ + +cocci.print_main("sum of probable bitmasks, consider |",p) + +@script:python depends on report@ +p << s.p; +@@ + +msg = "WARNING: sum of probable bitmasks, consider |" +coccilib.report.print_report(p[0],msg) |