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Diffstat (limited to 'scripts/coccinelle/misc/bugon.cocci')
| -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 000000000..741586094 --- /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 depends on (org || report)@ +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 instead of if condition followed by BUG.\nPlease make sure the condition has no side effects (see conditional BUG_ON definition in include/asm-generic/bug.h)" +coccilib.report.print_report(p[0], msg) + |