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authorJoe Perches <joe@perches.com>2016-05-21 03:04:05 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2016-05-21 03:58:30 +0300
commita91e8994f242a500bf05b9ee96fcd7ab0228f05f (patch)
tree45a5035b4c85592811e1d1603ee5048b1b7e8c30 /scripts
parentf39e1769bbfc4936ff8364fb2529dc8bf6bc6888 (diff)
downloadlinux-a91e8994f242a500bf05b9ee96fcd7ab0228f05f.tar.xz
checkpatch: add test for keywords not starting on tabstops
It's somewhat common and in general a defect for c90 keywords to not start on a tabstop. Add a test for this condition and warn when it occurs. Signed-off-by: Joe Perches <joe@perches.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-xscripts/checkpatch.pl13
1 files changed, 13 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index e3d9c34b1b53..6c1213cb32c4 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2755,6 +2755,19 @@ sub process {
"Logical continuations should be on the previous line\n" . $hereprev);
}
+# check indentation starts on a tab stop
+ if ($^V && $^V ge 5.10.0 &&
+ $sline =~ /^\+\t+( +)(?:$c90_Keywords\b|\{\s*$|\}\s*(?:else\b|while\b|\s*$))/) {
+ my $indent = length($1);
+ if ($indent % 8) {
+ if (WARN("TABSTOP",
+ "Statements should start on a tabstop\n" . $herecurr) &&
+ $fix) {
+ $fixed[$fixlinenr] =~ s@(^\+\t+) +@$1 . "\t" x ($indent/8)@e;
+ }
+ }
+ }
+
# check multi-line statement indentation matches previous line
if ($^V && $^V ge 5.10.0 &&
$prevline =~ /^\+([ \t]*)((?:$c90_Keywords(?:\s+if)\s*)|(?:$Declare\s*)?(?:$Ident|\(\s*\*\s*$Ident\s*\))\s*|$Ident\s*=\s*$Ident\s*)\(.*(\&\&|\|\||,)\s*$/) {