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| author | Joe Perches <joe@perches.com> | 2012-12-17 16:02:01 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-12-17 17:15:19 -0800 |
| commit | d1e2ad07e78c4bbac9fce4d2e3c0fe60bce091d8 (patch) | |
| tree | 41193684d79788aef5d00c817ba570c27c7de02f /scripts | |
| parent | 88982fea52d0115d44b77619afef576f24cdb844 (diff) | |
| download | lwn-d1e2ad07e78c4bbac9fce4d2e3c0fe60bce091d8.tar.gz lwn-d1e2ad07e78c4bbac9fce4d2e3c0fe60bce091d8.zip | |
checkpatch: add --strict test for switch/default missing break
switch default case is sometimes written as "default:;". This can cause
new cases added below the default to be defective.
Suggest adding a break; after empty default cases to avoid fallthrough
defects.
Fixed indentation in the other semicolon test above it.
Suggested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Signed-off-by: Joe Perches <joe@perches.com>
Cc: Andy Whitcroft <apw@canonical.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
| -rwxr-xr-x | scripts/checkpatch.pl | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index f27b0b53e3ea..725c59611e97 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -3448,8 +3448,22 @@ sub process { # check for multiple semicolons if ($line =~ /;\s*;\s*$/) { - WARN("ONE_SEMICOLON", - "Statements terminations use 1 semicolon\n" . $herecurr); + WARN("ONE_SEMICOLON", + "Statements terminations use 1 semicolon\n" . $herecurr); + } + +# check for switch/default statements without a break; + if ($^V && $^V ge 5.10.0 && + defined $stat && + $stat =~ /^\+[$;\s]*(?:case[$;\s]+\w+[$;\s]*:[$;\s]*|)*[$;\s]*\bdefault[$;\s]*:[$;\s]*;/g) { + my $ctx = ''; + my $herectx = $here . "\n"; + my $cnt = statement_rawlines($stat); + for (my $n = 0; $n < $cnt; $n++) { + $herectx .= raw_line($linenr, $n) . "\n"; + } + WARN("DEFAULT_NO_BREAK", + "switch default: should use break\n" . $herectx); } # check for gcc specific __FUNCTION__ |