Commit a3bb97a7 authored by Andy Whitcroft's avatar Andy Whitcroft Committed by Linus Torvalds

checkpatch: macros: fix statement counting block end detection

We are incorrectly counting the lines in a block while accumulating
the trailing lines in a macro statement, leading to false positives.
Fix end of block handling and general counting for negative context lines.
Signed-off-by: default avatarAndy Whitcroft <apw@shadowen.org>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 6ef9b297
......@@ -470,7 +470,9 @@ sub ctx_statement_block {
}
$off++;
}
# We are truly at the end, so shuffle to the next line.
if ($off == $len) {
$loff = $len + 1;
$line++;
$remain--;
}
......@@ -1793,30 +1795,26 @@ sub process {
$lines[$ln - 1] =~ /^(?:-|..*\\$)/)
{
$ctx .= $rawlines[$ln - 1] . "\n";
$cnt-- if ($lines[$ln - 1] !~ /^-/);
$ln++;
$cnt--;
}
$ctx .= $rawlines[$ln - 1];
($dstat, $dcond, $ln, $cnt, $off) =
ctx_statement_block($linenr, $ln - $linenr + 1, 0);
#print "dstat<$dstat> dcond<$dcond> cnt<$cnt> off<$off>\n";
#print "LINE<$lines[$ln]> len<" . length($lines[$ln]) . "\n";
#print "LINE<$lines[$ln-1]> len<" . length($lines[$ln-1]) . "\n";
# Extract the remainder of the define (if any) and
# rip off surrounding spaces, and trailing \'s.
$rest = '';
if (defined $lines[$ln - 1] &&
$off > length($lines[$ln - 1]))
{
$ln++;
$cnt--;
$off = 0;
}
while ($cnt > 0) {
$rest .= substr($lines[$ln - 1], $off) . "\n";
while ($off != 0 || ($cnt > 0 && $rest =~ /(?:^|\\)\s*$/)) {
#print "ADDING $off <" . substr($lines[$ln - 1], $off) . ">\n";
if ($off != 0 || $lines[$ln - 1] !~ /^-/) {
$rest .= substr($lines[$ln - 1], $off) . "\n";
$cnt--;
}
$ln++;
$cnt--;
$off = 0;
}
$rest =~ s/\\\n.//g;
......@@ -1847,6 +1845,7 @@ sub process {
DEFINE_PER_CPU|
__typeof__\(
}x;
#print "REST<$rest>\n";
if ($rest ne '') {
if ($rest !~ /while\s*\(/ &&
$dstat !~ /$exceptions/)
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment