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Diffstat (limited to 'scripts/coccinelle/misc/orplus.cocci')
| -rw-r--r-- | scripts/coccinelle/misc/orplus.cocci | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/scripts/coccinelle/misc/orplus.cocci b/scripts/coccinelle/misc/orplus.cocci new file mode 100644 index 000000000..3a1566f1a --- /dev/null +++ b/scripts/coccinelle/misc/orplus.cocci @@ -0,0 +1,71 @@ +// SPDX-License-Identifier: GPL-2.0-only +/// 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. +// Copyright: (C) 2013 Gilles Muller, INRIA/LIP6. +// URL: https://coccinelle.gitlabpages.inria.fr/website +// Comments: +// Options: --no-includes --include-headers + +virtual org +virtual report +virtual context + +@r@ +constant c,c1; +identifier i,i1; +position p; +@@ + +( + c1 + c - 1 +| + c1@i1 +@p c@i +) + +@s@ +constant r.c, r.c1; +identifier i; +expression e; +@@ + +( +e | c@i +| +e & c@i +| +e |= c@i +| +e &= c@i +| +e | c1@i +| +e & c1@i +| +e |= c1@i +| +e &= c1@i +) + +@depends on s@ +position r.p; +constant c1,c2; +@@ + +* c1 +@p c2 + +@script:python depends on s && org@ +p << r.p; +@@ + +cocci.print_main("sum of probable bitmasks, consider |",p) + +@script:python depends on s && report@ +p << r.p; +@@ + +msg = "WARNING: sum of probable bitmasks, consider |" +coccilib.report.print_report(p[0],msg) |