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| author | Himangi Saraogi <himangi774@gmail.com> | 2014-07-21 03:06:35 +0530 |
|---|---|---|
| committer | Michal Marek <mmarek@suse.cz> | 2014-08-06 12:10:17 +0200 |
| commit | 5be1df668a40cc0a49bc26023fffc537fae1778e (patch) | |
| tree | 47fb5f4be743c9165951c2c83d54382c5629c2a8 /scripts/coccinelle | |
| parent | e52320c3b20cbe209e98f2443866209120595636 (diff) | |
| download | lwn-5be1df668a40cc0a49bc26023fffc537fae1778e.tar.gz lwn-5be1df668a40cc0a49bc26023fffc537fae1778e.zip | |
Coccinelle: Script to replace if and BUG with BUG_ON
This script detects cases where BUG() follows an if condition on an
expression and replaces the if condition and BUG() with a BUG_ON having
the conditional expression of the if statement as argument.
Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Julia Lawall <julia.lawall@lip6.fr>
Signed-off-by: Michal Marek <mmarek@suse.cz>
Diffstat (limited to 'scripts/coccinelle')
| -rw-r--r-- | scripts/coccinelle/misc/bugon.cocci | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/scripts/coccinelle/misc/bugon.cocci b/scripts/coccinelle/misc/bugon.cocci new file mode 100644 index 000000000000..556456ca761c --- /dev/null +++ b/scripts/coccinelle/misc/bugon.cocci @@ -0,0 +1,62 @@ +/// Use BUG_ON instead of a if condition followed by BUG. +/// +//# This makes an effort to find cases where BUG() follows an if +//# condition on an expression and replaces the if condition and BUG() +//# with a BUG_ON having the conditional expression of the if statement +//# as argument. +// +// Confidence: High +// Copyright: (C) 2014 Himangi Saraogi. GPLv2. +// Comments: +// Options: --no-includes, --include-headers + +virtual patch +virtual context +virtual org +virtual report + +//---------------------------------------------------------- +// For context mode +//---------------------------------------------------------- + +@depends on context@ +expression e; +@@ + +*if (e) BUG(); + +//---------------------------------------------------------- +// For patch mode +//---------------------------------------------------------- + +@depends on patch@ +expression e; +@@ + +-if (e) BUG(); ++BUG_ON(e); + +//---------------------------------------------------------- +// For org and report mode +//---------------------------------------------------------- + +@r@ +expression e; +position p; +@@ + + if (e) BUG@p (); + +@script:python depends on org@ +p << r.p; +@@ + +coccilib.org.print_todo(p[0], "WARNING use BUG_ON") + +@script:python depends on report@ +p << r.p; +@@ + +msg="WARNING: Use BUG_ON" +coccilib.report.print_report(p[0], msg) + |