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authorJoe Perches <joe@perches.com>2016-10-11 13:52:05 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2016-10-11 15:06:30 -0700
commitaf207524a49c3d70af0a9196072ab3b6d690fcf7 (patch)
treeb53f54319eb5544fba15390709df43df3942f724 /scripts/checkpatch.pl
parent0616efa45af493a259d25c1716102173f10bd789 (diff)
downloadlinux-af207524a49c3d70af0a9196072ab3b6d690fcf7.tar.bz2
checkpatch: improve the block comment * alignment test
An "uninitialized value" is emitted when a block comment starts on the same line as a statement. Fix this and make the test use a little fewer cpu cycles too. Link: http://lkml.kernel.org/r/3c9993320c2182d37f53ac540878cfef59c3f62d.1473365956.git.joe@perches.com Signed-off-by: Joe Perches <joe@perches.com> Reported-by: Charlemagne Lasse <charlemagnelasse@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts/checkpatch.pl')
-rwxr-xr-xscripts/checkpatch.pl19
1 files changed, 12 insertions, 7 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index e44dc0c75d54..3fa2b2e973eb 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -3005,18 +3005,23 @@ sub process {
# Block comment * alignment
if ($prevline =~ /$;[ \t]*$/ && #ends in comment
- (($prevrawline =~ /^\+.*?\/\*/ && #starting /*
+ $line =~ /^\+[ \t]*$;/ && #leading comment
+ $rawline =~ /^\+[ \t]*\*/ && #leading *
+ (($prevrawline =~ /^\+.*?\/\*/ && #leading /*
$prevrawline !~ /\*\/[ \t]*$/) || #no trailing */
- $prevrawline =~ /^\+[ \t]*\*/) && #starting *
- $rawline =~ /^\+[ \t]*\*/) { #rawline *
+ $prevrawline =~ /^\+[ \t]*\*/)) { #leading *
+ my $oldindent;
$prevrawline =~ m@^\+([ \t]*/?)\*@;
- my $oldindent = expand_tabs($1);
+ if (defined($1)) {
+ $oldindent = expand_tabs($1);
+ } else {
+ $prevrawline =~ m@^\+(.*/?)\*@;
+ $oldindent = expand_tabs($1);
+ }
$rawline =~ m@^\+([ \t]*)\*@;
my $newindent = $1;
- my $test_comment = '^\\+' . "$;" x (length($newindent) + 1);
$newindent = expand_tabs($newindent);
- if ($line =~ /$test_comment/ &&
- length($oldindent) ne length($newindent)) {
+ if (length($oldindent) ne length($newindent)) {
WARN("BLOCK_COMMENT_STYLE",
"Block comments should align the * on each line\n" . $hereprev);
}