diff --git a/tools/build/checkstyle9.pl b/tools/build/checkstyle9.pl
index 7fa02bcabc97..99fd354fbacf 100755
--- a/tools/build/checkstyle9.pl
+++ b/tools/build/checkstyle9.pl
@@ -1,2704 +1,2705 @@
 #!/usr/bin/env perl
 # (c) 2001, Dave Jones. (the file handling bit)
 # (c) 2005, Joel Schopp <jschopp@austin.ibm.com> (the ugly bit)
 # (c) 2007,2008, Andy Whitcroft <apw@uk.ibm.com> (new conditions, test suite)
 # (c) 2008-2010 Andy Whitcroft <apw@canonical.com>
 # Licensed under the terms of the GNU GPL License version 2
 
 use strict;
 use warnings;
 use Term::ANSIColor qw(:constants);
 
 my $P = $0;
 $P =~ s@.*/@@g;
 
 our $SrcFile    = qr{\.(?:h|c|cpp|s|S|pl|py|sh)$};
 
 my $V = '0.31';
 
 use Getopt::Long qw(:config no_auto_abbrev);
 
 my $quiet = 0;
 my $tree = 1;
 my $chk_signoff = 1;
 my $chk_patch = undef;
 my $chk_branch = undef;
 my $tst_only;
 my $emacs = 0;
 my $github = 0;
 my $terse = 0;
 my $file = undef;
 my $color = "auto";
 my $no_warnings = 0;
 my $summary = 1;
 my $mailback = 0;
 my $summary_file = 0;
 my $root;
 my %debug;
 my $help = 0;
 
 sub help {
 	my ($exitcode) = @_;
 
 	print << "EOM";
 Usage:
 
     $P [OPTION]... [FILE]...
     $P [OPTION]... [GIT-REV-LIST]
 
 Version: $V
 
 Options:
   -q, --quiet                quiet
   --patch                    treat FILE as patchfile
   --branch                   treat args as GIT revision list
   --emacs                    emacs compile window format
   --terse                    one line per report
   -f, --file                 treat FILE as regular source file
   --strict                   fail if only warnings are found
   --no-summary               suppress the per-file summary
   --mailback                 only produce a report in case of warnings/errors
   --summary-file             include the filename in summary
   --debug KEY=[0|1]          turn on/off debugging of KEY, where KEY is one of
                              'values', 'possible', 'type', and 'attr' (default
                              is all off)
   --test-only=WORD           report only warnings/errors containing WORD
                              literally
   --color[=WHEN]             Use colors 'always', 'never', or only when output
                              is a terminal ('auto'). Default is 'auto'.
   -h, --help, --version      display this help and exit
 
 When FILE is - read standard input.
 EOM
 
 	exit($exitcode);
 }
 
 # Use at your own risk
 print "\n", MAGENTA, "WARNING:", RESET, " This code is highly experimental ... likely isn't a great style(9) match yet\n\n";
 
 # Perl's Getopt::Long allows options to take optional arguments after a space.
 # Prevent --color by itself from consuming other arguments
 foreach (@ARGV) {
 	if ($_ eq "--color" || $_ eq "-color") {
 		$_ = "--color=$color";
 	}
 }
 
 GetOptions(
 	'q|quiet+'	=> \$quiet,
 	'tree!'		=> \$tree,
 	'signoff!'	=> \$chk_signoff,
 	'patch!'	=> \$chk_patch,
 	'branch!'	=> \$chk_branch,
 	'emacs!'	=> \$emacs,
 	'github!'	=> \$github,
 	'terse!'	=> \$terse,
 	'f|file!'	=> \$file,
 	'strict!'	=> \$no_warnings,
 	'root=s'	=> \$root,
 	'summary!'	=> \$summary,
 	'mailback!'	=> \$mailback,
 	'summary-file!'	=> \$summary_file,
 
 	'debug=s'	=> \%debug,
 	'test-only=s'	=> \$tst_only,
 	'color=s'       => \$color,
 	'no-color'      => sub { $color = 'never'; },
 	'h|help'	=> \$help,
 	'version'	=> \$help
 ) or help(1);
 
 help(0) if ($help);
 
 my $exit = 0;
 
 if ($#ARGV < 0) {
 	print "$P: no input files\n";
 	exit(1);
 }
 
 if (!defined $chk_branch && !defined $chk_patch && !defined $file) {
 	$chk_branch = $ARGV[0] =~ /.\.\./ ? 1 : 0;
 	$file = $ARGV[0] =~ /$SrcFile/ ? 1 : 0;
 	$chk_patch = $chk_branch || $file ? 0 : 1;
 } elsif (!defined $chk_branch && !defined $chk_patch) {
 	if ($file) {
 		$chk_branch = $chk_patch = 0;
 	} else {
 		$chk_branch = $ARGV[0] =~ /.\.\./ ? 1 : 0;
 		$chk_patch = $chk_branch ? 0 : 1;
 	}
 } elsif (!defined $chk_branch && !defined $file) {
 	if ($chk_patch) {
 		$chk_branch = $file = 0;
 	} else {
 		$chk_branch = $ARGV[0] =~ /.\.\./ ? 1 : 0;
 		$file = $chk_branch ? 0 : 1;
 	}
 } elsif (!defined $chk_patch && !defined $file) {
 	if ($chk_branch) {
 		$chk_patch = $file = 0;
 	} else {
 		$file = $ARGV[0] =~ /$SrcFile/ ? 1 : 0;
 		$chk_patch = $file ? 0 : 1;
 	}
 } elsif (!defined $chk_branch) {
 	$chk_branch = $chk_patch || $file ? 0 : 1;
 } elsif (!defined $chk_patch) {
 	$chk_patch = $chk_branch || $file ? 0 : 1;
 } elsif (!defined $file) {
 	$file = $chk_patch || $chk_branch ? 0 : 1;
 }
 
 if (($chk_patch && $chk_branch) ||
     ($chk_patch && $file) ||
     ($chk_branch && $file)) {
 	die "Only one of --file, --branch, --patch is permitted\n";
 }
 if (!$chk_patch && !$chk_branch && !$file) {
 	die "One of --file, --branch, --patch is required\n";
 }
 
 if ($color =~ /^always$/i) {
 	$color = 1;
 } elsif ($color =~ /^never$/i) {
 	$color = 0;
 } elsif ($color =~ /^auto$/i) {
 	$color = (-t STDOUT);
 } else {
 	die "Invalid color mode: $color\n";
 }
 
 my $dbg_values = 0;
 my $dbg_possible = 0;
 my $dbg_adv_dcs = 0;
 my $dbg_adv_checking = 0;
 my $dbg_adv_apw = 0;
 for my $key (keys %debug) {
 	## no critic
 	eval "\${dbg_$key} = '$debug{$key}';";
 	die "$@" if ($@);
 }
 
 my $rpt_cleaners = 0;
 
 if ($terse) {
 	$emacs = 1;
 	$quiet++;
 }
 
 my $emitted_corrupt = 0;
 
 our $Ident	= qr{
 			[A-Za-z_][A-Za-z\d_]*
 			(?:\s*\#\#\s*[A-Za-z_][A-Za-z\d_]*)*
 		}x;
 our $Storage	= qr{extern|static|asmlinkage};
 our $Sparse	= qr{
 			__force
 		}x;
 
 # Notes to $Attribute:
 our $Attribute	= qr{
 			const|
+			_*restrict|
 			volatile|
 			QEMU_NORETURN|
 			QEMU_WARN_UNUSED_RESULT|
 			QEMU_SENTINEL|
 			QEMU_PACKED|
 			GCC_FMT_ATTR
 		  }x;
 our $Modifier;
 our $Inline	= qr{inline};
 our $Member	= qr{->$Ident|\.$Ident|\[[^]]*\]};
 our $Lval	= qr{$Ident(?:$Member)*};
 
 our $Constant	= qr{(?:[0-9]+|0x[0-9a-fA-F]+)[UL]*};
 our $Assignment	= qr{(?:\*\=|/=|%=|\+=|-=|<<=|>>=|&=|\^=|\|=|=)};
 our $Compare    = qr{<=|>=|==|!=|<|>};
 our $Operators	= qr{
 			<=|>=|==|!=|
 			=>|->|<<|>>|<|>|!|~|
 			&&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%
 		  }x;
 
 our $NonptrType;
 our $Type;
 our $Declare;
 
 our $NON_ASCII_UTF8	= qr{
 	[\xC2-\xDF][\x80-\xBF]               # non-overlong 2-byte
 	|  \xE0[\xA0-\xBF][\x80-\xBF]        # excluding overlongs
 	| [\xE1-\xEC\xEE\xEF][\x80-\xBF]{2}  # straight 3-byte
 	|  \xED[\x80-\x9F][\x80-\xBF]        # excluding surrogates
 	|  \xF0[\x90-\xBF][\x80-\xBF]{2}     # planes 1-3
 	| [\xF1-\xF3][\x80-\xBF]{3}          # planes 4-15
 	|  \xF4[\x80-\x8F][\x80-\xBF]{2}     # plane 16
 }x;
 
 our $UTF8	= qr{
 	[\x09\x0A\x0D\x20-\x7E]              # ASCII
 	| $NON_ASCII_UTF8
 }x;
 
 # some readers default to ISO-8859-1 when showing email source. detect
 # when UTF-8 is incorrectly interpreted as ISO-8859-1 and reencoded back.
 # False positives are possible but very unlikely.
 our $UTF8_MOJIBAKE = qr{
 	\xC3[\x82-\x9F] \xC2[\x80-\xBF]                    # c2-df 80-bf
 	| \xC3\xA0 \xC2[\xA0-\xBF] \xC2[\x80-\xBF]         # e0 a0-bf 80-bf
 	| \xC3[\xA1-\xAC\xAE\xAF] (?: \xC2[\x80-\xBF]){2}  # e1-ec/ee/ef 80-bf 80-bf
 	| \xC3\xAD \xC2[\x80-\x9F] \xC2[\x80-\xBF]         # ed 80-9f 80-bf
 	| \xC3\xB0 \xC2[\x90-\xBF] (?: \xC2[\x80-\xBF]){2} # f0 90-bf 80-bf 80-bf
 	| \xC3[\xB1-\xB3] (?: \xC2[\x80-\xBF]){3}          # f1-f3 80-bf 80-bf 80-bf
 	| \xC3\xB4 \xC2[\x80-\x8F] (?: \xC2[\x80-\xBF]){2} # f4 80-b8 80-bf 80-bf
 }x;
 
 # There are still some false positives, but this catches most
 # common cases.
 our $typeTypedefs = qr{(?x:
         (?![KMGTPE]iB)                      # IEC binary prefix (do not match)
         [A-Z][A-Z\d_]*[a-z][A-Za-z\d_]*     # camelcase
         | [A-Z][A-Z\d_]*AIOCB               # all uppercase
         | [A-Z][A-Z\d_]*CPU                 # all uppercase
         | QEMUBH                            # all uppercase
 )};
 
 our @typeList = (
 	qr{void},
 	qr{(?:unsigned\s+)?char},
 	qr{(?:unsigned\s+)?short},
 	qr{(?:unsigned\s+)?int},
 	qr{(?:unsigned\s+)?long},
 	qr{(?:unsigned\s+)?long\s+int},
 	qr{(?:unsigned\s+)?long\s+long},
 	qr{(?:unsigned\s+)?long\s+long\s+int},
 	qr{unsigned},
 	qr{float},
 	qr{double},
 	qr{bool},
 	qr{struct\s+$Ident},
 	qr{union\s+$Ident},
 	qr{enum\s+$Ident},
 	qr{${Ident}_t},
 	qr{${Ident}_handler},
 	qr{${Ident}_handler_fn},
 	qr{target_(?:u)?long},
 	qr{hwaddr},
 );
 
 # This can be modified by sub possible.  Since it can be empty, be careful
 # about regexes that always match, because they can cause infinite loops.
 our @modifierList = (
 );
 
 sub build_types {
 	my $all = "(?x:  \n" . join("|\n  ", @typeList) . "\n)";
 	if (@modifierList > 0) {
 		my $mods = "(?x:  \n" . join("|\n  ", @modifierList) . "\n)";
 		$Modifier = qr{(?:$Attribute|$Sparse|$mods)};
 	} else {
 		$Modifier = qr{(?:$Attribute|$Sparse)};
 	}
 	$NonptrType	= qr{
 			(?:$Modifier\s+|const\s+)*
 			(?:
 				(?:typeof|__typeof__)\s*\(\s*\**\s*$Ident\s*\)|
 				(?:$typeTypedefs\b)|
 				(?:${all}\b)
 			)
 			(?:\s+$Modifier|\s+const)*
 		  }x;
 	$Type	= qr{
 			$NonptrType
 			(?:[\s\*]+\s*const|[\s\*]+|(?:\s*\[\s*\])+)?
 			(?:\s+$Inline|\s+$Modifier)*
 		  }x;
 	$Declare	= qr{(?:$Storage\s+)?$Type};
 }
 build_types();
 
 $chk_signoff = 0 if ($file);
 
 my @rawlines = ();
 my @lines = ();
 my $vname;
 if ($chk_branch) {
 	my @patches;
 	my %git_commits = ();
 	my $HASH;
 	open($HASH, "-|", "git", "log", "--reverse", "--no-merges", "--format=%H %s", $ARGV[0]) ||
 		die "$P: git log --reverse --no-merges --format='%H %s' $ARGV[0] failed - $!\n";
 
 	for my $line (<$HASH>) {
 		$line =~ /^([0-9a-fA-F]{40,40}) (.*)$/;
 		next if (!defined($1) || !defined($2));
 		my $sha1 = $1;
 		my $subject = $2;
 		push(@patches, $sha1);
 		$git_commits{$sha1} = $subject;
 	}
 
 	close $HASH;
 
 	die "$P: no revisions returned for revlist '$ARGV[0]'\n"
 	    unless @patches;
 
 	my $i = 1;
 	my $num_patches = @patches;
 	for my $hash (@patches) {
 		my $FILE;
 		open($FILE, '-|', "git", "show", "--patch-with-stat", $hash) ||
 			die "$P: git show $hash - $!\n";
 		while (<$FILE>) {
 			chomp;
 			push(@rawlines, $_);
 		}
 		close($FILE);
 		$vname = substr($hash, 0, 12) . ' (' . $git_commits{$hash} . ')';
 		if ($num_patches > 1 && $quiet == 0) {
 			my $prefix = "$i/$num_patches";
 			$prefix = BLUE . BOLD . $prefix . RESET if $color;
 			print "$prefix Checking commit $vname\n";
 			$vname = "Patch $i/$num_patches";
 		} else {
 			$vname = "Commit " . $vname;
 		}
 		if (!process($hash)) {
 			$exit = 1;
 			print "\n" if ($num_patches > 1 && $quiet == 0);
 		}
 		@rawlines = ();
 		@lines = ();
 		$i++;
 	}
 } else {
 	for my $filename (@ARGV) {
 		my $FILE;
 		if ($file) {
 			open($FILE, '-|', "diff -u /dev/null $filename") ||
 				die "$P: $filename: diff failed - $!\n";
 		} elsif ($filename eq '-') {
 			open($FILE, '<&STDIN');
 		} else {
 			open($FILE, '<', "$filename") ||
 				die "$P: $filename: open failed - $!\n";
 		}
 		if ($filename eq '-') {
 			$vname = 'Your patch';
 		} else {
 			$vname = $filename;
 		}
 		print "Checking $filename...\n" if @ARGV > 1 && $quiet == 0;
 		while (<$FILE>) {
 			chomp;
 			push(@rawlines, $_);
 		}
 		close($FILE);
 		if (!process($filename)) {
 			$exit = 1;
 		}
 		@rawlines = ();
 		@lines = ();
 	}
 }
 
 exit($exit);
 
 sub top_of_kernel_tree {
 	my ($root) = @_;
 
 	my @tree_check = (
 	    "Makefile.inc1", "README.md", "sys",
 	    "usr.sbin"
 	);
 
 	foreach my $check (@tree_check) {
 		if (! -e $root . '/' . $check) {
 			return 0;
 		}
 	}
 	return 1;
 }
 
 sub expand_tabs {
 	my ($str) = @_;
 
 	my $res = '';
 	my $n = 0;
 	for my $c (split(//, $str)) {
 		if ($c eq "\t") {
 			$res .= ' ';
 			$n++;
 			for (; ($n % 8) != 0; $n++) {
 				$res .= ' ';
 			}
 			next;
 		}
 		$res .= $c;
 		$n++;
 	}
 
 	return $res;
 }
 sub copy_spacing {
 	(my $res = shift) =~ tr/\t/ /c;
 	return $res;
 }
 
 sub line_stats {
 	my ($line) = @_;
 
 	# Drop the diff line leader and expand tabs
 	$line =~ s/^.//;
 	$line = expand_tabs($line);
 
 	# Pick the indent from the front of the line.
 	my ($white) = ($line =~ /^(\s*)/);
 
 	return (length($line), length($white));
 }
 
 my $sanitise_quote = '';
 
 sub sanitise_line_reset {
 	my ($in_comment) = @_;
 
 	if ($in_comment) {
 		$sanitise_quote = '*/';
 	} else {
 		$sanitise_quote = '';
 	}
 }
 sub sanitise_line {
 	my ($line) = @_;
 
 	my $res = '';
 	my $l = '';
 
 	my $qlen = 0;
 	my $off = 0;
 	my $c;
 
 	# Always copy over the diff marker.
 	$res = substr($line, 0, 1);
 
 	for ($off = 1; $off < length($line); $off++) {
 		$c = substr($line, $off, 1);
 
 		# Comments we are wacking completely including the begin
 		# and end, all to $;.
 		if ($sanitise_quote eq '' && substr($line, $off, 2) eq '/*') {
 			$sanitise_quote = '*/';
 
 			substr($res, $off, 2, "$;$;");
 			$off++;
 			next;
 		}
 		if ($sanitise_quote eq '*/' && substr($line, $off, 2) eq '*/') {
 			$sanitise_quote = '';
 			substr($res, $off, 2, "$;$;");
 			$off++;
 			next;
 		}
 		if ($sanitise_quote eq '' && substr($line, $off, 2) eq '//') {
 			$sanitise_quote = '//';
 
 			substr($res, $off, 2, $sanitise_quote);
 			$off++;
 			next;
 		}
 
 		# A \ in a string means ignore the next character.
 		if (($sanitise_quote eq "'" || $sanitise_quote eq '"') &&
 		    $c eq "\\") {
 			substr($res, $off, 2, 'XX');
 			$off++;
 			next;
 		}
 		# Regular quotes.
 		if ($c eq "'" || $c eq '"') {
 			if ($sanitise_quote eq '') {
 				$sanitise_quote = $c;
 
 				substr($res, $off, 1, $c);
 				next;
 			} elsif ($sanitise_quote eq $c) {
 				$sanitise_quote = '';
 			}
 		}
 
 		#print "c<$c> SQ<$sanitise_quote>\n";
 		if ($off != 0 && $sanitise_quote eq '*/' && $c ne "\t") {
 			substr($res, $off, 1, $;);
 		} elsif ($off != 0 && $sanitise_quote eq '//' && $c ne "\t") {
 			substr($res, $off, 1, $;);
 		} elsif ($off != 0 && $sanitise_quote && $c ne "\t") {
 			substr($res, $off, 1, 'X');
 		} else {
 			substr($res, $off, 1, $c);
 		}
 	}
 
 	if ($sanitise_quote eq '//') {
 		$sanitise_quote = '';
 	}
 
 	# The pathname on a #include may be surrounded by '<' and '>'.
 	if ($res =~ /^.\s*\#\s*include\s+\<(.*)\>/) {
 		my $clean = 'X' x length($1);
 		$res =~ s@\<.*\>@<$clean>@;
 
 	# The whole of a #error is a string.
 	} elsif ($res =~ /^.\s*\#\s*(?:error|warning)\s+(.*)\b/) {
 		my $clean = 'X' x length($1);
 		$res =~ s@(\#\s*(?:error|warning)\s+).*@$1$clean@;
 	}
 
 	return $res;
 }
 
 sub ctx_statement_block {
 	my ($linenr, $remain, $off) = @_;
 	my $line = $linenr - 1;
 	my $blk = '';
 	my $soff = $off;
 	my $coff = $off - 1;
 	my $coff_set = 0;
 
 	my $loff = 0;
 
 	my $type = '';
 	my $level = 0;
 	my @stack = ();
 	my $p;
 	my $c;
 	my $len = 0;
 
 	my $remainder;
 	while (1) {
 		@stack = (['', 0]) if ($#stack == -1);
 
 		#warn "CSB: blk<$blk> remain<$remain>\n";
 		# If we are about to drop off the end, pull in more
 		# context.
 		if ($off >= $len) {
 			for (; $remain > 0; $line++) {
 				last if (!defined $lines[$line]);
 				next if ($lines[$line] =~ /^-/);
 				$remain--;
 				$loff = $len;
 				$blk .= $lines[$line] . "\n";
 				$len = length($blk);
 				$line++;
 				last;
 			}
 			# Bail if there is no further context.
 			#warn "CSB: blk<$blk> off<$off> len<$len>\n";
 			if ($off >= $len) {
 				last;
 			}
 		}
 		$p = $c;
 		$c = substr($blk, $off, 1);
 		$remainder = substr($blk, $off);
 
 		#warn "CSB: c<$c> type<$type> level<$level> remainder<$remainder> coff_set<$coff_set>\n";
 
 		# Handle nested #if/#else.
 		if ($remainder =~ /^#\s*(?:ifndef|ifdef|if)\s/) {
 			push(@stack, [ $type, $level ]);
 		} elsif ($remainder =~ /^#\s*(?:else|elif)\b/) {
 			($type, $level) = @{$stack[$#stack - 1]};
 		} elsif ($remainder =~ /^#\s*endif\b/) {
 			($type, $level) = @{pop(@stack)};
 		}
 
 		# Statement ends at the ';' or a close '}' at the
 		# outermost level.
 		if ($level == 0 && $c eq ';') {
 			last;
 		}
 
 		# An else is really a conditional as long as its not else if
 		if ($level == 0 && $coff_set == 0 &&
 				(!defined($p) || $p =~ /(?:\s|\}|\+)/) &&
 				$remainder =~ /^(else)(?:\s|{)/ &&
 				$remainder !~ /^else\s+if\b/) {
 			$coff = $off + length($1) - 1;
 			$coff_set = 1;
 			#warn "CSB: mark coff<$coff> soff<$soff> 1<$1>\n";
 			#warn "[" . substr($blk, $soff, $coff - $soff + 1) . "]\n";
 		}
 
 		if (($type eq '' || $type eq '(') && $c eq '(') {
 			$level++;
 			$type = '(';
 		}
 		if ($type eq '(' && $c eq ')') {
 			$level--;
 			$type = ($level != 0)? '(' : '';
 
 			if ($level == 0 && $coff < $soff) {
 				$coff = $off;
 				$coff_set = 1;
 				#warn "CSB: mark coff<$coff>\n";
 			}
 		}
 		if (($type eq '' || $type eq '{') && $c eq '{') {
 			$level++;
 			$type = '{';
 		}
 		if ($type eq '{' && $c eq '}') {
 			$level--;
 			$type = ($level != 0)? '{' : '';
 
 			if ($level == 0) {
 				if (substr($blk, $off + 1, 1) eq ';') {
 					$off++;
 				}
 				last;
 			}
 		}
 		$off++;
 	}
 	# We are truly at the end, so shuffle to the next line.
 	if ($off == $len) {
 		$loff = $len + 1;
 		$line++;
 		$remain--;
 	}
 
 	my $statement = substr($blk, $soff, $off - $soff + 1);
 	my $condition = substr($blk, $soff, $coff - $soff + 1);
 
 	#warn "STATEMENT<$statement>\n";
 	#warn "CONDITION<$condition>\n";
 
 	#print "coff<$coff> soff<$off> loff<$loff>\n";
 
 	return ($statement, $condition,
 			$line, $remain + 1, $off - $loff + 1, $level);
 }
 
 sub statement_lines {
 	my ($stmt) = @_;
 
 	# Strip the diff line prefixes and rip blank lines at start and end.
 	$stmt =~ s/(^|\n)./$1/g;
 	$stmt =~ s/^\s*//;
 	$stmt =~ s/\s*$//;
 
 	my @stmt_lines = ($stmt =~ /\n/g);
 
 	return $#stmt_lines + 2;
 }
 
 sub statement_rawlines {
 	my ($stmt) = @_;
 
 	my @stmt_lines = ($stmt =~ /\n/g);
 
 	return $#stmt_lines + 2;
 }
 
 sub statement_block_size {
 	my ($stmt) = @_;
 
 	$stmt =~ s/(^|\n)./$1/g;
 	$stmt =~ s/^\s*\{//;
 	$stmt =~ s/}\s*$//;
 	$stmt =~ s/^\s*//;
 	$stmt =~ s/\s*$//;
 
 	my @stmt_lines = ($stmt =~ /\n/g);
 	my @stmt_statements = ($stmt =~ /;/g);
 
 	my $stmt_lines = $#stmt_lines + 2;
 	my $stmt_statements = $#stmt_statements + 1;
 
 	if ($stmt_lines > $stmt_statements) {
 		return $stmt_lines;
 	} else {
 		return $stmt_statements;
 	}
 }
 
 sub ctx_statement_full {
 	my ($linenr, $remain, $off) = @_;
 	my ($statement, $condition, $level);
 
 	my (@chunks);
 
 	# Grab the first conditional/block pair.
 	($statement, $condition, $linenr, $remain, $off, $level) =
 				ctx_statement_block($linenr, $remain, $off);
 	#print "F: c<$condition> s<$statement> remain<$remain>\n";
 	push(@chunks, [ $condition, $statement ]);
 	if (!($remain > 0 && $condition =~ /^\s*(?:\n[+-])?\s*(?:if|else|do)\b/s)) {
 		return ($level, $linenr, @chunks);
 	}
 
 	# Pull in the following conditional/block pairs and see if they
 	# could continue the statement.
 	for (;;) {
 		($statement, $condition, $linenr, $remain, $off, $level) =
 				ctx_statement_block($linenr, $remain, $off);
 		#print "C: c<$condition> s<$statement> remain<$remain>\n";
 		last if (!($remain > 0 && $condition =~ /^(?:\s*\n[+-])*\s*(?:else|do)\b/s));
 		#print "C: push\n";
 		push(@chunks, [ $condition, $statement ]);
 	}
 
 	return ($level, $linenr, @chunks);
 }
 
 sub ctx_block_get {
 	my ($linenr, $remain, $outer, $open, $close, $off) = @_;
 	my $line;
 	my $start = $linenr - 1;
 	my $blk = '';
 	my @o;
 	my @c;
 	my @res = ();
 
 	my $level = 0;
 	my @stack = ($level);
 	for ($line = $start; $remain > 0; $line++) {
 		next if ($rawlines[$line] =~ /^-/);
 		$remain--;
 
 		$blk .= $rawlines[$line];
 
 		# Handle nested #if/#else.
 		if ($lines[$line] =~ /^.\s*#\s*(?:ifndef|ifdef|if)\s/) {
 			push(@stack, $level);
 		} elsif ($lines[$line] =~ /^.\s*#\s*(?:else|elif)\b/) {
 			$level = $stack[$#stack - 1];
 		} elsif ($lines[$line] =~ /^.\s*#\s*endif\b/) {
 			$level = pop(@stack);
 		}
 
 		foreach my $c (split(//, $lines[$line])) {
 			##print "C<$c>L<$level><$open$close>O<$off>\n";
 			if ($off > 0) {
 				$off--;
 				next;
 			}
 
 			if ($c eq $close && $level > 0) {
 				$level--;
 				last if ($level == 0);
 			} elsif ($c eq $open) {
 				$level++;
 			}
 		}
 
 		if (!$outer || $level <= 1) {
 			push(@res, $rawlines[$line]);
 		}
 
 		last if ($level == 0);
 	}
 
 	return ($level, @res);
 }
 sub ctx_block_outer {
 	my ($linenr, $remain) = @_;
 
 	my ($level, @r) = ctx_block_get($linenr, $remain, 1, '{', '}', 0);
 	return @r;
 }
 sub ctx_block {
 	my ($linenr, $remain) = @_;
 
 	my ($level, @r) = ctx_block_get($linenr, $remain, 0, '{', '}', 0);
 	return @r;
 }
 sub ctx_statement {
 	my ($linenr, $remain, $off) = @_;
 
 	my ($level, @r) = ctx_block_get($linenr, $remain, 0, '(', ')', $off);
 	return @r;
 }
 sub ctx_block_level {
 	my ($linenr, $remain) = @_;
 
 	return ctx_block_get($linenr, $remain, 0, '{', '}', 0);
 }
 sub ctx_statement_level {
 	my ($linenr, $remain, $off) = @_;
 
 	return ctx_block_get($linenr, $remain, 0, '(', ')', $off);
 }
 
 sub ctx_locate_comment {
 	my ($first_line, $end_line) = @_;
 
 	# Catch a comment on the end of the line itself.
 	my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(?:\\\s*)?$@);
 	return $current_comment if (defined $current_comment);
 
 	# Look through the context and try and figure out if there is a
 	# comment.
 	my $in_comment = 0;
 	$current_comment = '';
 	for (my $linenr = $first_line; $linenr < $end_line; $linenr++) {
 		my $line = $rawlines[$linenr - 1];
 		#warn "           $line\n";
 		if ($linenr == $first_line and $line =~ m@^.\s*\*@) {
 			$in_comment = 1;
 		}
 		if ($line =~ m@/\*@) {
 			$in_comment = 1;
 		}
 		if (!$in_comment && $current_comment ne '') {
 			$current_comment = '';
 		}
 		$current_comment .= $line . "\n" if ($in_comment);
 		if ($line =~ m@\*/@) {
 			$in_comment = 0;
 		}
 	}
 
 	chomp($current_comment);
 	return($current_comment);
 }
 sub ctx_has_comment {
 	my ($first_line, $end_line) = @_;
 	my $cmt = ctx_locate_comment($first_line, $end_line);
 
 	##print "LINE: $rawlines[$end_line - 1 ]\n";
 	##print "CMMT: $cmt\n";
 
 	return ($cmt ne '');
 }
 
 sub raw_line {
 	my ($linenr, $cnt) = @_;
 
 	my $offset = $linenr - 1;
 	$cnt++;
 
 	my $line;
 	while ($cnt) {
 		$line = $rawlines[$offset++];
 		next if (defined($line) && $line =~ /^-/);
 		$cnt--;
 	}
 
 	return $line;
 }
 
 sub cat_vet {
 	my ($vet) = @_;
 	my ($res, $coded);
 
 	$res = '';
 	while ($vet =~ /([^[:cntrl:]]*)([[:cntrl:]]|$)/g) {
 		$res .= $1;
 		if ($2 ne '') {
 			$coded = sprintf("^%c", unpack('C', $2) + 64);
 			$res .= $coded;
 		}
 	}
 	$res =~ s/$/\$/;
 
 	return $res;
 }
 
 my $av_preprocessor = 0;
 my $av_pending;
 my @av_paren_type;
 my $av_pend_colon;
 
 sub annotate_reset {
 	$av_preprocessor = 0;
 	$av_pending = '_';
 	@av_paren_type = ('E');
 	$av_pend_colon = 'O';
 }
 
 sub annotate_values {
 	my ($stream, $type) = @_;
 
 	my $res;
 	my $var = '_' x length($stream);
 	my $cur = $stream;
 
 	print "$stream\n" if ($dbg_values > 1);
 
 	while (length($cur)) {
 		@av_paren_type = ('E') if ($#av_paren_type < 0);
 		print " <" . join('', @av_paren_type) .
 				"> <$type> <$av_pending>" if ($dbg_values > 1);
 		if ($cur =~ /^(\s+)/o) {
 			print "WS($1)\n" if ($dbg_values > 1);
 			if ($1 =~ /\n/ && $av_preprocessor) {
 				$type = pop(@av_paren_type);
 				$av_preprocessor = 0;
 			}
 
 		} elsif ($cur =~ /^(\(\s*$Type\s*)\)/ && $av_pending eq '_') {
 			print "CAST($1)\n" if ($dbg_values > 1);
 			push(@av_paren_type, $type);
 			$type = 'C';
 
 		} elsif ($cur =~ /^($Type)\s*(?:$Ident|,|\)|\(|\s*$)/) {
 			print "DECLARE($1)\n" if ($dbg_values > 1);
 			$type = 'T';
 
 		} elsif ($cur =~ /^($Modifier)\s*/) {
 			print "MODIFIER($1)\n" if ($dbg_values > 1);
 			$type = 'T';
 
 		} elsif ($cur =~ /^(\#\s*define\s*$Ident)(\(?)/o) {
 			print "DEFINE($1,$2)\n" if ($dbg_values > 1);
 			$av_preprocessor = 1;
 			push(@av_paren_type, $type);
 			if ($2 ne '') {
 				$av_pending = 'N';
 			}
 			$type = 'E';
 
 		} elsif ($cur =~ /^(\#\s*(?:undef\s*$Ident|include\b))/o) {
 			print "UNDEF($1)\n" if ($dbg_values > 1);
 			$av_preprocessor = 1;
 			push(@av_paren_type, $type);
 
 		} elsif ($cur =~ /^(\#\s*(?:ifdef|ifndef|if))/o) {
 			print "PRE_START($1)\n" if ($dbg_values > 1);
 			$av_preprocessor = 1;
 
 			push(@av_paren_type, $type);
 			push(@av_paren_type, $type);
 			$type = 'E';
 
 		} elsif ($cur =~ /^(\#\s*(?:else|elif))/o) {
 			print "PRE_RESTART($1)\n" if ($dbg_values > 1);
 			$av_preprocessor = 1;
 
 			push(@av_paren_type, $av_paren_type[$#av_paren_type]);
 
 			$type = 'E';
 
 		} elsif ($cur =~ /^(\#\s*(?:endif))/o) {
 			print "PRE_END($1)\n" if ($dbg_values > 1);
 
 			$av_preprocessor = 1;
 
 			# Assume all arms of the conditional end as this
 			# one does, and continue as if the #endif was not here.
 			pop(@av_paren_type);
 			push(@av_paren_type, $type);
 			$type = 'E';
 
 		} elsif ($cur =~ /^(\\\n)/o) {
 			print "PRECONT($1)\n" if ($dbg_values > 1);
 
 		} elsif ($cur =~ /^(__attribute__)\s*\(?/o) {
 			print "ATTR($1)\n" if ($dbg_values > 1);
 			$av_pending = $type;
 			$type = 'N';
 
 		} elsif ($cur =~ /^(sizeof)\s*(\()?/o) {
 			print "SIZEOF($1)\n" if ($dbg_values > 1);
 			if (defined $2) {
 				$av_pending = 'V';
 			}
 			$type = 'N';
 
 		} elsif ($cur =~ /^(if|while|for)\b/o) {
 			print "COND($1)\n" if ($dbg_values > 1);
 			$av_pending = 'E';
 			$type = 'N';
 
 		} elsif ($cur =~/^(case)/o) {
 			print "CASE($1)\n" if ($dbg_values > 1);
 			$av_pend_colon = 'C';
 			$type = 'N';
 
 		} elsif ($cur =~/^(return|else|goto|typeof|__typeof__)\b/o) {
 			print "KEYWORD($1)\n" if ($dbg_values > 1);
 			$type = 'N';
 
 		} elsif ($cur =~ /^(\()/o) {
 			print "PAREN('$1')\n" if ($dbg_values > 1);
 			push(@av_paren_type, $av_pending);
 			$av_pending = '_';
 			$type = 'N';
 
 		} elsif ($cur =~ /^(\))/o) {
 			my $new_type = pop(@av_paren_type);
 			if ($new_type ne '_') {
 				$type = $new_type;
 				print "PAREN('$1') -> $type\n"
 							if ($dbg_values > 1);
 			} else {
 				print "PAREN('$1')\n" if ($dbg_values > 1);
 			}
 
 		} elsif ($cur =~ /^($Ident)\s*\(/o) {
 			print "FUNC($1)\n" if ($dbg_values > 1);
 			$type = 'V';
 			$av_pending = 'V';
 
 		} elsif ($cur =~ /^($Ident\s*):(?:\s*\d+\s*(,|=|;))?/) {
 			if (defined $2 && $type eq 'C' || $type eq 'T') {
 				$av_pend_colon = 'B';
 			} elsif ($type eq 'E') {
 				$av_pend_colon = 'L';
 			}
 			print "IDENT_COLON($1,$type>$av_pend_colon)\n" if ($dbg_values > 1);
 			$type = 'V';
 
 		} elsif ($cur =~ /^($Ident|$Constant)/o) {
 			print "IDENT($1)\n" if ($dbg_values > 1);
 			$type = 'V';
 
 		} elsif ($cur =~ /^($Assignment)/o) {
 			print "ASSIGN($1)\n" if ($dbg_values > 1);
 			$type = 'N';
 
 		} elsif ($cur =~/^(;|{|})/) {
 			print "END($1)\n" if ($dbg_values > 1);
 			$type = 'E';
 			$av_pend_colon = 'O';
 
 		} elsif ($cur =~/^(,)/) {
 			print "COMMA($1)\n" if ($dbg_values > 1);
 			$type = 'C';
 
 		} elsif ($cur =~ /^(\?)/o) {
 			print "QUESTION($1)\n" if ($dbg_values > 1);
 			$type = 'N';
 
 		} elsif ($cur =~ /^(:)/o) {
 			print "COLON($1,$av_pend_colon)\n" if ($dbg_values > 1);
 
 			substr($var, length($res), 1, $av_pend_colon);
 			if ($av_pend_colon eq 'C' || $av_pend_colon eq 'L') {
 				$type = 'E';
 			} else {
 				$type = 'N';
 			}
 			$av_pend_colon = 'O';
 
 		} elsif ($cur =~ /^(\[)/o) {
 			print "CLOSE($1)\n" if ($dbg_values > 1);
 			$type = 'N';
 
 		} elsif ($cur =~ /^(-(?![->])|\+(?!\+)|\*|\&\&|\&)/o) {
 			my $variant;
 
 			print "OPV($1)\n" if ($dbg_values > 1);
 			if ($type eq 'V') {
 				$variant = 'B';
 			} else {
 				$variant = 'U';
 			}
 
 			substr($var, length($res), 1, $variant);
 			$type = 'N';
 
 		} elsif ($cur =~ /^($Operators)/o) {
 			print "OP($1)\n" if ($dbg_values > 1);
 			if ($1 ne '++' && $1 ne '--') {
 				$type = 'N';
 			}
 
 		} elsif ($cur =~ /(^.)/o) {
 			print "C($1)\n" if ($dbg_values > 1);
 		}
 		if (defined $1) {
 			$cur = substr($cur, length($1));
 			$res .= $type x length($1);
 		}
 	}
 
 	return ($res, $var);
 }
 
 sub possible {
 	my ($possible, $line) = @_;
 	my $notPermitted = qr{(?:
 		^(?:
 			$Modifier|
 			$Storage|
 			$Type|
 			DEFINE_\S+
 		)$|
 		^(?:
 			goto|
 			return|
 			case|
 			else|
 			asm|__asm__|
 			do
 		)(?:\s|$)|
 		^(?:typedef|struct|enum)\b|
 		^\#
 	    )}x;
 	warn "CHECK<$possible> ($line)\n" if ($dbg_possible > 2);
 	if ($possible !~ $notPermitted) {
 		# Check for modifiers.
 		$possible =~ s/\s*$Storage\s*//g;
 		$possible =~ s/\s*$Sparse\s*//g;
 		if ($possible =~ /^\s*$/) {
 
 		} elsif ($possible =~ /\s/) {
 			$possible =~ s/\s*(?:$Type|\#\#)\s*//g;
 			for my $modifier (split(' ', $possible)) {
 				if ($modifier !~ $notPermitted) {
 					warn "MODIFIER: $modifier ($possible) ($line)\n" if ($dbg_possible);
 					push(@modifierList, $modifier);
 				}
 			}
 
 		} else {
 			warn "POSSIBLE: $possible ($line)\n" if ($dbg_possible);
 			push(@typeList, $possible);
 		}
 		build_types();
 	} else {
 		warn "NOTPOSS: $possible ($line)\n" if ($dbg_possible > 1);
 	}
 }
 
 my $prefix = '';
 
 sub report {
 	my ($level, $msg) = @_;
 	if (defined $tst_only && $msg !~ /\Q$tst_only\E/) {
 		return 0;
 	}
 
 	my $output = '';
 	my $do_color = $color && !$github;
 	$output .= BOLD if $do_color;
 	$output .= "::error " if $github && $level eq 'ERROR';
 	$output .= "::warning " if $github && $level eq 'WARNING';
 	$output .= $prefix;
 	$output .= RED if $do_color && $level eq 'ERROR';
 	$output .= MAGENTA if $do_color && $level eq 'WARNING';
 	$output .= $level . ':' if !$github;
 	$output .= RESET if $do_color;
 	$output .= ' ' if (!$github);
 	$output .= $msg . "\n";
 
 	$output = (split('\n', $output))[0] . "\n" if ($terse);
 
 	push(our @report, $output);
 
 	return 1;
 }
 sub report_dump {
 	our @report;
 }
 sub ERROR {
  	if (report("ERROR", $_[0])) {
 		our $clean = 0;
 		our $cnt_error++;
 	}
 }
 sub WARN {
 	if (report("WARNING", $_[0])) {
 		our $clean = 0;
 		our $cnt_warn++;
 	}
 }
 
 # According to tests/qtest/bios-tables-test.c: do not
 # change expected file in the same commit with adding test
 sub checkfilename {
 	my ($name, $acpi_testexpected, $acpi_nontestexpected) = @_;
 
         # Note: shell script that rebuilds the expected files is in the same
         # directory as files themselves.
         # Note: allowed diff list can be changed both when changing expected
         # files and when changing tests.
 	if ($name =~ m#^tests/data/acpi/# and not $name =~ m#^\.sh$#) {
 		$$acpi_testexpected = $name;
 	} elsif ($name !~ m#^tests/qtest/bios-tables-test-allowed-diff.h$#) {
 		$$acpi_nontestexpected = $name;
 	}
 	if (defined $$acpi_testexpected and defined $$acpi_nontestexpected) {
 		ERROR("Do not add expected files together with tests, " .
 		      "follow instructions in " .
 		      "tests/qtest/bios-tables-test.c: both " .
 		      $$acpi_testexpected . " and " .
 		      $$acpi_nontestexpected . " found\n");
 	}
 }
 
 sub process {
 	my $filename = shift;
 
 	my $linenr=0;
 	my $prevline="";
 	my $prevrawline="";
 	my $stashline="";
 	my $stashrawline="";
 
 	my $length;
 	my $indent;
 	my $previndent=0;
 	my $stashindent=0;
 
 	our $clean = 1;
 	my $signoff = 0;
 	my $is_patch = 0;
 
 	my $in_header_lines = $file ? 0 : 1;
 	my $in_commit_log = 0;		#Scanning lines before patch
 	my $has_sob = 0;
 	my $non_utf8_charset = 0;
 
 	our @report = ();
 	our $cnt_lines = 0;
 	our $cnt_error = 0;
 	our $cnt_warn = 0;
 	our $cnt_chk = 0;
 
 	# Trace the real file/line as we go.
 	my $realfile = '';
 	my $realline = 0;
 	my $realcnt = 0;
 	my $here = '';
 	my $in_comment = 0;
 	my $comment_edge = 0;
 	my $first_line = 0;
 	my $p1_prefix = '';
 
 	my $prev_values = 'E';
 
 	# suppression flags
 	my %suppress_ifbraces;
 	my %suppress_whiletrailers;
 	my %suppress_export;
 
         my $acpi_testexpected;
         my $acpi_nontestexpected;
 
 	# Pre-scan the patch sanitizing the lines.
 
 	sanitise_line_reset();
 	my $line;
 	foreach my $rawline (@rawlines) {
 		$linenr++;
 		$line = $rawline;
 
 		if ($rawline=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
 			$realline=$1-1;
 			if (defined $2) {
 				$realcnt=$3+1;
 			} else {
 				$realcnt=1+1;
 			}
 			$in_comment = 0;
 
 			# Guestimate if this is a continuing comment.  Run
 			# the context looking for a comment "edge".  If this
 			# edge is a close comment then we must be in a comment
 			# at context start.
 			my $edge;
 			my $cnt = $realcnt;
 			for (my $ln = $linenr + 1; $cnt > 0; $ln++) {
 				next if (defined $rawlines[$ln - 1] &&
 					 $rawlines[$ln - 1] =~ /^-/);
 				$cnt--;
 				#print "RAW<$rawlines[$ln - 1]>\n";
 				last if (!defined $rawlines[$ln - 1]);
 				if ($rawlines[$ln - 1] =~ m@(/\*|\*/)@ &&
 				    $rawlines[$ln - 1] !~ m@"[^"]*(?:/\*|\*/)[^"]*"@) {
 					($edge) = $1;
 					last;
 				}
 			}
 			if (defined $edge && $edge eq '*/') {
 				$in_comment = 1;
 			}
 
 			# Guestimate if this is a continuing comment.  If this
 			# is the start of a diff block and this line starts
 			# ' *' then it is very likely a comment.
 			if (!defined $edge &&
 			    $rawlines[$linenr] =~ m@^.\s*(?:\*\*+| \*)(?:\s|$)@)
 			{
 				$in_comment = 1;
 			}
 
 			##print "COMMENT:$in_comment edge<$edge> $rawline\n";
 			sanitise_line_reset($in_comment);
 
 		} elsif ($realcnt && $rawline =~ /^(?:\+| |$)/) {
 			# Standardise the strings and chars within the input to
 			# simplify matching -- only bother with positive lines.
 			$line = sanitise_line($rawline);
 		}
 		push(@lines, $line);
 
 		if ($realcnt > 1) {
 			$realcnt-- if ($line =~ /^(?:\+| |$)/);
 		} else {
 			$realcnt = 0;
 		}
 
 		#print "==>$rawline\n";
 		#print "-->$line\n";
 	}
 
 	$prefix = '';
 
 	$realcnt = 0;
 	$linenr = 0;
 	foreach my $line (@lines) {
 		$linenr++;
 
 		my $rawline = $rawlines[$linenr - 1];
 
 #extract the line range in the file after the patch is applied
 		if ($line=~/^\@\@ -\d+(?:,\d+)? \+(\d+)(,(\d+))? \@\@/) {
 			$is_patch = 1;
 			$first_line = $linenr + 1;
 			$realline=$1-1;
 			if (defined $2) {
 				$realcnt=$3+1;
 			} else {
 				$realcnt=1+1;
 			}
 			annotate_reset();
 			$prev_values = 'E';
 
 			%suppress_ifbraces = ();
 			%suppress_whiletrailers = ();
 			%suppress_export = ();
 			next;
 
 # track the line number as we move through the hunk, note that
 # new versions of GNU diff omit the leading space on completely
 # blank context lines so we need to count that too.
 		} elsif ($line =~ /^( |\+|$)/) {
 			$realline++;
 			$realcnt-- if ($realcnt != 0);
 
 			# Measure the line length and indent.
 			($length, $indent) = line_stats($rawline);
 
 			# Track the previous line.
 			($prevline, $stashline) = ($stashline, $line);
 			($previndent, $stashindent) = ($stashindent, $indent);
 			($prevrawline, $stashrawline) = ($stashrawline, $rawline);
 
 			#warn "line<$line>\n";
 
 		} elsif ($realcnt == 1) {
 			$realcnt--;
 		}
 
 		my $hunk_line = ($realcnt != 0);
 
 #make up the handle for any error we report on this line
 		$prefix = "$filename:$realline: " if ($emacs && $file);
 		$prefix = "$filename:$linenr: " if ($emacs && !$file);
 		$prefix = "file=$filename,line=$realline:\:" if ($github && $file);
 		$prefix = "file=$realfile,line=$realline:\:" if ($github && !$file);
 
 		$here = "#$linenr: " if (!$file);
 		$here = "#$realline: " if ($file);
 
 		# extract the filename as it passes
 		if ($line =~ /^diff --git.*?(\S+)$/) {
 			$realfile = $1;
 			$realfile =~ s@^([^/]*)/@@ if (!$file);
 	                checkfilename($realfile, \$acpi_testexpected, \$acpi_nontestexpected);
 		} elsif ($line =~ /^\+\+\+\s+(\S+)/) {
 			$realfile = $1;
 			$realfile =~ s@^([^/]*)/@@ if (!$file);
 	                checkfilename($realfile, \$acpi_testexpected, \$acpi_nontestexpected);
 
 			$p1_prefix = $1;
 			if (!$file && $tree && $p1_prefix ne '' && defined $root &&
 			    -e "$root/$p1_prefix") {
 				WARN("patch prefix '$p1_prefix' exists, appears to be a -p0 patch\n");
 			}
 
 			next;
 		}
 
 		$here .= "FILE: $realfile:$realline:" if ($realcnt != 0);
 
 		my $hereline = "$here\n$rawline\n";
 		my $herecurr = "$here\n$rawline\n";
 		my $hereprev = "$here\n$prevrawline\n$rawline\n";
 
 		$cnt_lines++ if ($realcnt != 0);
 
 # Check for incorrect file permissions
 		if ($line =~ /^new (file )?mode.*[7531]\d{0,2}$/) {
 			my $permhere = $here . "FILE: $realfile\n";
 			if ($realfile =~ /(\bMakefile(?:\.objs)?|\.c|\.cc|\.cpp|\.h|\.mak|\.[sS])$/) {
 				ERROR("do not set execute permissions for source files\n" . $permhere);
 			}
 		}
 
 # Accept git diff extended headers as valid patches
 		if ($line =~ /^(?:rename|copy) (?:from|to) [\w\/\.\-]+\s*$/) {
 			$is_patch = 1;
 		}
 
 # Filter out bad email addresses.
 		if ($line =~ /^(Author|From): .*noreply.*/) {
 		    ERROR("Real email adress is needed\n" . $herecurr);
 		}
 
 #check the patch for a signoff:
 		if ($line =~ /^\s*signed-off-by:/i) {
 			# This is a signoff, if ugly, so do not double report.
 			$in_commit_log = 0;
 			$has_sob = 1;
 
 			if (!($line =~ /^\s*Signed-off-by:/)) {
 				ERROR("The correct form is \"Signed-off-by\"\n" .
 					$herecurr);
 				$has_sob = 0;
 			}
 			if ($line =~ /^\s*signed-off-by:\S/i) {
 				ERROR("space required after Signed-off-by:\n" .
 					$herecurr);
 				$has_sob = 0;
 			}
 		}
 
 # Check for wrappage within a valid hunk of the file
 		if ($realcnt != 0 && $line !~ m{^(?:\+|-| |\\ No newline|$)}) {
 			ERROR("patch seems to be corrupt (line wrapped?)\n" .
 				$herecurr) if (!$emitted_corrupt++);
 		}
 
 # UTF-8 regex found at http://www.w3.org/International/questions/qa-forms-utf-8.en.php
 		if (($realfile =~ /^$/ || $line =~ /^\+/) &&
 		    $rawline !~ m/^$UTF8*$/) {
 			my ($utf8_prefix) = ($rawline =~ /^($UTF8*)/);
 
 			my $blank = copy_spacing($rawline);
 			my $ptr = substr($blank, 0, length($utf8_prefix)) . "^";
 			my $hereptr = "$hereline$ptr\n";
 
 			ERROR("Invalid UTF-8, patch and commit message should be encoded in UTF-8\n" . $hereptr);
 		}
 
 		if ($rawline =~ m/$UTF8_MOJIBAKE/) {
 			ERROR("Doubly-encoded UTF-8\n" . $herecurr);
 		}
 # Check if it's the start of a commit log
 # (not a header line and we haven't seen the patch filename)
 		if ($in_header_lines && $realfile =~ /^$/ &&
 		    !($rawline =~ /^\s+\S/ ||
 		      $rawline =~ /^(commit\b|from\b|[\w-]+:).*$/i)) {
 			$in_header_lines = 0;
 			$in_commit_log = 1;
 		}
 
 # Check if there is UTF-8 in a commit log when a mail header has explicitly
 # declined it, i.e defined some charset where it is missing.
 		if ($in_header_lines &&
 		    $rawline =~ /^Content-Type:.+charset="(.+)".*$/ &&
 		    $1 !~ /utf-8/i) {
 			$non_utf8_charset = 1;
 		}
 
 		if ($in_commit_log && $non_utf8_charset && $realfile =~ /^$/ &&
 		    $rawline =~ /$NON_ASCII_UTF8/) {
 			WARN("8-bit UTF-8 used in possible commit log\n" . $herecurr);
 		}
 
 # ignore non-hunk lines and lines being removed
 		next if (!$hunk_line || $line =~ /^-/);
 
 #trailing whitespace
 		if ($line =~ /^\+.*\015/) {
 			my $herevet = "$here\n" . cat_vet($rawline) . "\n";
 			ERROR("DOS line endings\n" . $herevet);
 
 		} elsif ($realfile =~ /^docs\/.+\.txt/ ||
 			 $realfile =~ /^docs\/.+\.md/) {
 		    if ($rawline =~ /^\+\s+$/ && $rawline !~ /^\+ {4}$/) {
 			# TODO: properly check we're in a code block
 			#       (surrounding text is 4-column aligned)
 			my $herevet = "$here\n" . cat_vet($rawline) . "\n";
 			ERROR("code blocks in documentation should have " .
 			      "empty lines with exactly 4 columns of " .
 			      "whitespace\n" . $herevet);
 		    }
 		} elsif ($rawline =~ /^\+.*\S\s+$/ || $rawline =~ /^\+\s+$/) {
 			my $herevet = "$here\n" . cat_vet($rawline) . "\n";
 			ERROR("trailing whitespace\n" . $herevet);
 			$rpt_cleaners = 1;
 		}
 
 # check we are in a valid source file if not then ignore this hunk
 		next if ($realfile !~ /$SrcFile/);
 
 #120 column limit; exempt URLs, if no other words on line
 		if ($line =~ /^\+/ &&
 		    !($line =~ /^\+\s*"[^"]*"\s*(?:\s*|,|\)\s*;)\s*$/) &&
 		    !($rawline =~ /^[^[:alnum:]]*https?:\S*$/) &&
 		    $length > 80 &&
 		    $realfile !~ /\/tests\//)
 		{
 			if ($length > 120) {
 				ERROR("line over 120 characters\n" . $herecurr);
 			} else {
 				WARN("line over 80 characters\n" . $herecurr);
 			}
 		}
 
 # check for spaces before a quoted newline
 		if ($rawline =~ /^.*\".*\s\\n/) {
 			ERROR("unnecessary whitespace before a quoted newline\n" . $herecurr);
 		}
 
 # check for adding lines without a newline.
 		if ($line =~ /^\+/ && defined $lines[$linenr] && $lines[$linenr] =~ /^\\ No newline at end of file/) {
 			ERROR("adding a line without newline at end of file\n" . $herecurr);
 		}
 
 # check for RCS/CVS revision markers
 		if ($rawline =~ /^\+.*\$(FreeBSD|Revision|Log|Id)(?:\$|\b)/) {
 			ERROR("CVS style keyword markers, these will _not_ be updated\n". $herecurr);
 		}
 
 # check we are in a valid C source file if not then ignore this hunk
 		next if ($realfile !~ /\.(h|c|cpp)$/);
 
 # Block comment styles
 
 		# Block comments use /* on a line of its own
 		if ($rawline !~ m@^\+.*/\*.*\*/[ \t)}]*$@ &&	#inline /*...*/
 		    $rawline =~ m@^\+.*/\*[*-]?+[ \t]*[^ \t]@) { # /* or /** or /*- non-blank
 			WARN("Block comments use a leading /* on a separate line\n" . $herecurr);
 		}
 
 # Block comments use * on subsequent lines
 		if ($prevline =~ /$;[ \t]*$/ &&			#ends in comment
 		    $prevrawline =~ /^\+.*?\/\*/ &&		#starting /*
 		    $prevrawline !~ /\*\/[ \t]*$/ &&		#no trailing */
 		    $rawline =~ /^\+/ &&			#line is new
 		    $rawline !~ /^\+[ \t]*\*/) {		#no leading *
 			WARN("Block comments use * on subsequent lines\n" . $hereprev);
 		}
 
 # Block comments use */ on trailing lines
 		if ($rawline !~ m@^\+[ \t]*\*/[ \t]*$@ &&	#trailing */
 		    $rawline !~ m@^\+.*/\*.*\*/[ \t]*$@ &&	#inline /*...*/
 		    $rawline !~ m@^\+.*\*{2,}/[ \t]*$@ &&	#trailing **/
 		    $rawline =~ m@^\+[ \t]*.+\*\/[ \t]*$@) {	#non blank */
 			WARN("Block comments use a trailing */ on a separate line\n" . $herecurr);
 		}
 
 # Block comment * alignment
 		if ($prevline =~ /$;[ \t]*$/ &&			#ends in comment
 		    $line =~ /^\+[ \t]*$;/ &&			#leading comment
 		    $rawline =~ /^\+[ \t]*\*/ &&		#leading *
 		    (($prevrawline =~ /^\+.*?\/\*/ &&		#leading /*
 		      $prevrawline !~ /\*\/[ \t]*$/) ||		#no trailing */
 		     $prevrawline =~ /^\+[ \t]*\*/)) {		#leading *
 			my $oldindent;
 			$prevrawline =~ m@^\+([ \t]*/?)\*@;
 			if (defined($1)) {
 				$oldindent = expand_tabs($1);
 			} else {
 				$prevrawline =~ m@^\+(.*/?)\*@;
 				$oldindent = expand_tabs($1);
 			}
 			$rawline =~ m@^\+([ \t]*)\*@;
 			my $newindent = $1;
 			$newindent = expand_tabs($newindent);
 			if (length($oldindent) ne length($newindent)) {
 				WARN("Block comments should align the * on each line\n" . $hereprev);
 			}
 		}
 
 # Check for potential 'bare' types
 		my ($stat, $cond, $line_nr_next, $remain_next, $off_next,
 		    $realline_next);
 		if ($realcnt && $line =~ /.\s*\S/) {
 			($stat, $cond, $line_nr_next, $remain_next, $off_next) =
 				ctx_statement_block($linenr, $realcnt, 0);
 			$stat =~ s/\n./\n /g;
 			$cond =~ s/\n./\n /g;
 
 			# Find the real next line.
 			$realline_next = $line_nr_next;
 			if (defined $realline_next &&
 			    (!defined $lines[$realline_next - 1] ||
 			     substr($lines[$realline_next - 1], $off_next) =~ /^\s*$/)) {
 				$realline_next++;
 			}
 
 			my $s = $stat;
 			$s =~ s/{.*$//s;
 
 			# Ignore goto labels.
 			if ($s =~ /$Ident:\*$/s) {
 
 			# Ignore functions being called
 			} elsif ($s =~ /^.\s*$Ident\s*\(/s) {
 
 			} elsif ($s =~ /^.\s*else\b/s) {
 
 			# declarations always start with types
 			} elsif ($prev_values eq 'E' && $s =~ /^.\s*(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?((?:\s*$Ident)+?)\b(?:\s+$Sparse)?\s*\**\s*(?:$Ident|\(\*[^\)]*\))(?:\s*$Modifier)?\s*(?:;|=|,|\()/s) {
 				my $type = $1;
 				$type =~ s/\s+/ /g;
 				possible($type, "A:" . $s);
 
 			# definitions in global scope can only start with types
 			} elsif ($s =~ /^.(?:$Storage\s+)?(?:$Inline\s+)?(?:const\s+)?($Ident)\b\s*(?!:)/s) {
 				possible($1, "B:" . $s);
 			}
 
 			# any (foo ... *) is a pointer cast, and foo is a type
 			while ($s =~ /\(($Ident)(?:\s+$Sparse)*[\s\*]+\s*\)/sg) {
 				possible($1, "C:" . $s);
 			}
 
 			# Check for any sort of function declaration.
 			# int foo(something bar, other baz);
 			# void (*store_gdt)(x86_descr_ptr *);
 			if ($prev_values eq 'E' && $s =~ /^(.(?:typedef\s*)?(?:(?:$Storage|$Inline)\s*)*\s*$Type\s*(?:\b$Ident|\(\*\s*$Ident\))\s*)\(/s) {
 				my ($name_len) = length($1);
 
 				my $ctx = $s;
 				substr($ctx, 0, $name_len + 1, '');
 				$ctx =~ s/\)[^\)]*$//;
 
 				for my $arg (split(/\s*,\s*/, $ctx)) {
 					if ($arg =~ /^(?:const\s+)?($Ident)(?:\s+$Sparse)*\s*\**\s*(:?\b$Ident)?$/s || $arg =~ /^($Ident)$/s) {
 
 						possible($1, "D:" . $s);
 					}
 				}
 			}
 
 		}
 
 #
 # Checks which may be anchored in the context.
 #
 
 # Check for switch () and associated case and default
 # statements should be at the same indent.
 		if ($line=~/\bswitch\s*\(.*\)/) {
 			my $err = '';
 			my $sep = '';
 			my @ctx = ctx_block_outer($linenr, $realcnt);
 			shift(@ctx);
 			for my $ctx (@ctx) {
 				my ($clen, $cindent) = line_stats($ctx);
 				if ($ctx =~ /^\+\s*(case\s+|default:)/ &&
 							$indent != $cindent) {
 					$err .= "$sep$ctx\n";
 					$sep = '';
 				} else {
 					$sep = "[...]\n";
 				}
 			}
 			if ($err ne '') {
 				ERROR("switch and case should be at the same indent\n$hereline$err");
 			}
 		}
 
 # if/while/etc brace do not go on next line, unless defining a do while loop,
 # or if that brace on the next line is for something else
 		if ($line =~ /(.*)\b((?:if|while|for|switch)\s*\(|do\b|else\b)/ && $line !~ /^.\s*\#/) {
 			my $pre_ctx = "$1$2";
 
 			my ($level, @ctx) = ctx_statement_level($linenr, $realcnt, 0);
 			my $ctx_cnt = $realcnt - $#ctx - 1;
 			my $ctx = join("\n", @ctx);
 
 			my $ctx_ln = $linenr;
 			my $ctx_skip = $realcnt;
 
 			while ($ctx_skip > $ctx_cnt || ($ctx_skip == $ctx_cnt &&
 					defined $lines[$ctx_ln - 1] &&
 					$lines[$ctx_ln - 1] =~ /^-/)) {
 				##print "SKIP<$ctx_skip> CNT<$ctx_cnt>\n";
 				$ctx_skip-- if (!defined $lines[$ctx_ln - 1] || $lines[$ctx_ln - 1] !~ /^-/);
 				$ctx_ln++;
 			}
 
 			#print "realcnt<$realcnt> ctx_cnt<$ctx_cnt>\n";
 			#print "pre<$pre_ctx>\nline<$line>\nctx<$ctx>\nnext<$lines[$ctx_ln - 1]>\n";
 
 			# The length of the "previous line" is checked against 80 because it
 			# includes the + at the beginning of the line (if the actual line has
 			# 79 or 80 characters, it is no longer possible to add a space and an
 			# opening brace there)
 			if ($#ctx == 0 && $ctx !~ /{\s*/ &&
 			    defined($lines[$ctx_ln - 1]) && $lines[$ctx_ln - 1] =~ /^\+\s*\{/ &&
 			    defined($lines[$ctx_ln - 2]) && length($lines[$ctx_ln - 2]) < 80) {
 				ERROR("that open brace { should be on the previous line\n" .
 					"$here\n$ctx\n$rawlines[$ctx_ln - 1]\n");
 			}
 			if ($level == 0 && $pre_ctx !~ /}\s*while\s*\($/ &&
 			    $ctx =~ /\)\s*\;\s*$/ &&
 			    defined $lines[$ctx_ln - 1])
 			{
 				my ($nlength, $nindent) = line_stats($lines[$ctx_ln - 1]);
 				if ($nindent > $indent) {
 					ERROR("trailing semicolon indicates no statements, indent implies otherwise\n" .
 						"$here\n$ctx\n$rawlines[$ctx_ln - 1]\n");
 				}
 			}
 		}
 
 # 'do ... while (0/false)' only makes sense in macros, without trailing ';'
 		if ($line =~ /while\s*\((0|false)\);/) {
 			ERROR("suspicious ; after while (0)\n" . $herecurr);
 		}
 
 # Check superfluous trailing ';'
 		if ($line =~ /;;$/) {
 			ERROR("superfluous trailing semicolon\n" . $herecurr);
 		}
 
 # Check relative indent for conditionals and blocks.
 		if ($line =~ /\b(?:(?:if|while|for)\s*\(|do\b)/ && $line !~ /^.\s*#/ && $line !~ /\}\s*while\s*/) {
 			my ($s, $c) = ($stat, $cond);
 
 			substr($s, 0, length($c), '');
 
 			# Make sure we remove the line prefixes as we have
 			# none on the first line, and are going to re-add them
 			# where necessary.
 			$s =~ s/\n./\n/gs;
 
 			# Find out how long the conditional actually is.
 			my @newlines = ($c =~ /\n/gs);
 			my $cond_lines = 1 + $#newlines;
 
 			# We want to check the first line inside the block
 			# starting at the end of the conditional, so remove:
 			#  1) any blank line termination
 			#  2) any opening brace { on end of the line
 			#  3) any do (...) {
 			my $continuation = 0;
 			my $check = 0;
 			$s =~ s/^.*\bdo\b//;
 			$s =~ s/^\s*\{//;
 			if ($s =~ s/^\s*\\//) {
 				$continuation = 1;
 			}
 			if ($s =~ s/^\s*?\n//) {
 				$check = 1;
 				$cond_lines++;
 			}
 
 			# Also ignore a loop construct at the end of a
 			# preprocessor statement.
 			if (($prevline =~ /^.\s*#\s*define\s/ ||
 			    $prevline =~ /\\\s*$/) && $continuation == 0) {
 				$check = 0;
 			}
 
 			my $cond_ptr = -1;
 			$continuation = 0;
 			while ($cond_ptr != $cond_lines) {
 				$cond_ptr = $cond_lines;
 
 				# If we see an #else/#elif then the code
 				# is not linear.
 				if ($s =~ /^\s*\#\s*(?:else|elif)/) {
 					$check = 0;
 				}
 
 				# Ignore:
 				#  1) blank lines, they should be at 0,
 				#  2) preprocessor lines, and
 				#  3) labels.
 				if ($continuation ||
 				    $s =~ /^\s*?\n/ ||
 				    $s =~ /^\s*#\s*?/ ||
 				    $s =~ /^\s*$Ident\s*:/) {
 					$continuation = ($s =~ /^.*?\\\n/) ? 1 : 0;
 					if ($s =~ s/^.*?\n//) {
 						$cond_lines++;
 					}
 				}
 			}
 
 			my (undef, $sindent) = line_stats("+" . $s);
 			my $stat_real = raw_line($linenr, $cond_lines);
 
 			# Check if either of these lines are modified, else
 			# this is not this patch's fault.
 			if (!defined($stat_real) ||
 			    $stat !~ /^\+/ && $stat_real !~ /^\+/) {
 				$check = 0;
 			}
 			if (defined($stat_real) && $cond_lines > 1) {
 				$stat_real = "[...]\n$stat_real";
 			}
 
 			#print "line<$line> prevline<$prevline> indent<$indent> sindent<$sindent> check<$check> continuation<$continuation> s<$s> cond_lines<$cond_lines> stat_real<$stat_real> stat<$stat>\n";
 
 			if ($check && (($sindent % 4) != 0 ||
 			    ($sindent <= $indent && $s ne ''))) {
 				ERROR("suspect code indent for conditional statements ($indent, $sindent)\n" . $herecurr . "$stat_real\n");
 			}
 		}
 
 		# Track the 'values' across context and added lines.
 		my $opline = $line; $opline =~ s/^./ /;
 		my ($curr_values, $curr_vars) =
 				annotate_values($opline . "\n", $prev_values);
 		$curr_values = $prev_values . $curr_values;
 		if ($dbg_values) {
 			my $outline = $opline; $outline =~ s/\t/ /g;
 			print "$linenr > .$outline\n";
 			print "$linenr > $curr_values\n";
 			print "$linenr >  $curr_vars\n";
 		}
 		$prev_values = substr($curr_values, -1);
 
 #ignore lines not being added
 		if ($line=~/^[^\+]/) {next;}
 
 # check for initialisation to aggregates open brace on the next line
 		if ($line =~ /^.\s*\{/ &&
 		    $prevline =~ /(?:^|[^=])=\s*$/) {
 			ERROR("that open brace { should be on the previous line\n" . $hereprev);
 		}
 
 #
 # Checks which are anchored on the added line.
 #
 
 # check for malformed paths in #include statements (uses RAW line)
 		if ($rawline =~ m{^.\s*\#\s*include\s+[<"](.*)[">]}) {
 			my $path = $1;
 			if ($path =~ m{//}) {
 				ERROR("malformed #include filename\n" .
 					$herecurr);
 			}
 		}
 
 # Remove C99 comments.
 		$line =~ s@//.*@@;
 		$opline =~ s@//.*@@;
 
 # * goes on variable not on type
 		# (char*[ const])
 		if ($line =~ m{\($NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)\)}) {
 			my ($from, $to) = ($1, $1);
 
 			# Should start with a space.
 			$to =~ s/^(\S)/ $1/;
 			# Should not end with a space.
 			$to =~ s/\s+$//;
 			# '*'s should not have spaces between.
 			while ($to =~ s/\*\s+\*/\*\*/) {
 			}
 
 			#print "from<$from> to<$to>\n";
 			if ($from ne $to) {
 				ERROR("\"(foo$from)\" should be \"(foo$to)\"\n" .  $herecurr);
 			}
 		} elsif ($line =~ m{\b$NonptrType(\s*(?:$Modifier\b\s*|\*\s*)+)($Ident)}) {
 			my ($from, $to, $ident) = ($1, $1, $2);
 
 			# Should start with a space.
 			$to =~ s/^(\S)/ $1/;
 			# Should not end with a space.
 			$to =~ s/\s+$//;
 			# '*'s should not have spaces between.
 			while ($to =~ s/\*\s+\*/\*\*/) {
 			}
 			# Modifiers should have spaces.
 			$to =~ s/(\b$Modifier$)/$1 /;
 
 			#print "from<$from> to<$to> ident<$ident>\n";
 			if ($from ne $to && $ident !~ /^$Modifier$/) {
 				ERROR("\"foo${from}bar\" should be \"foo${to}bar\"\n" .  $herecurr);
 			}
 		}
 
 # function brace can't be on same line, except for #defines of do while,
 # or if closed on same line
 		if (($line=~/$Type\s*$Ident\(.*\).*\s\{/) and
 		    !($line=~/\#\s*define.*do\s\{/) and !($line=~/}/)) {
 			ERROR("open brace '{' following function declarations go on the next line\n" . $herecurr);
 		}
 
 # missing space after union, struct or enum definition
 		if ($line =~ /^.\s*(?:typedef\s+)?(enum|union|struct)(?:\s+$Ident)?(?:\s+$Ident)?[=\{]/) {
 		    ERROR("missing space after $1 definition\n" . $herecurr);
 		}
 
 # check for spacing round square brackets; allowed:
 #  1. with a type on the left -- int [] a;
 #  2. at the beginning of a line for slice initialisers -- [0...10] = 5,
 #  3. inside a curly brace -- = { [0...10] = 5 }
 #  4. after a comma -- [1] = 5, [2] = 6
 #  5. in a macro definition -- #define abc(x) [x] = y
 		while ($line =~ /(.*?\s)\[/g) {
 			my ($where, $prefix) = ($-[1], $1);
 			if ($prefix !~ /$Type\s+$/ &&
 			    ($where != 0 || $prefix !~ /^.\s+$/) &&
 			    $prefix !~ /\#\s*define[^(]*\([^)]*\)\s+$/ &&
 			    $prefix !~ /[,{:]\s+$/) {
 				ERROR("space prohibited before open square bracket '['\n" . $herecurr);
 			}
 		}
 
 # check for spaces between functions and their parentheses.
 		while ($line =~ /($Ident)\s+\(/g) {
 			my $name = $1;
 			my $ctx_before = substr($line, 0, $-[1]);
 			my $ctx = "$ctx_before$name";
 
 			# Ignore those directives where spaces _are_ permitted.
 			if ($name =~ /^(?:
 				if|for|while|switch|return|case|
 				volatile|__volatile__|coroutine_fn|
 				__attribute__|format|__extension__|
 				asm|__asm__)$/x)
 			{
 
 			# Ignore 'catch (...)' in C++
 			} elsif ($name =~ /^catch$/ && $realfile =~ /(\.cpp|\.h)$/) {
 
 			# cpp #define statements have non-optional spaces, ie
 			# if there is a space between the name and the open
 			# parenthesis it is simply not a parameter group.
 			} elsif ($ctx_before =~ /^.\s*\#\s*define\s*$/) {
 
 			# cpp #elif statement condition may start with a (
 			} elsif ($ctx =~ /^.\s*\#\s*elif\s*$/) {
 
 			# If this whole things ends with a type its most
 			# likely a typedef for a function.
 			} elsif ($ctx =~ /$Type$/) {
 
 			} else {
 				ERROR("space prohibited between function name and open parenthesis '('\n" . $herecurr);
 			}
 		}
 # Check operator spacing.
 		if (!($line=~/\#\s*include/)) {
 			my $ops = qr{
 				<<=|>>=|<=|>=|==|!=|
 				\+=|-=|\*=|\/=|%=|\^=|\|=|&=|
 				=>|->|<<|>>|<|>|=|!|~|
 				&&|\|\||,|\^|\+\+|--|&|\||\+|-|\*|\/|%|
 				\?|::|:
 			}x;
 			my @elements = split(/($ops|;)/, $opline);
 			my $off = 0;
 
 			my $blank = copy_spacing($opline);
 
 			for (my $n = 0; $n < $#elements; $n += 2) {
 				$off += length($elements[$n]);
 
 				# Pick up the preceding and succeeding characters.
 				my $ca = substr($opline, 0, $off);
 				my $cc = '';
 				if (length($opline) >= ($off + length($elements[$n + 1]))) {
 					$cc = substr($opline, $off + length($elements[$n + 1]));
 				}
 				my $cb = "$ca$;$cc";
 
 				my $a = '';
 				$a = 'V' if ($elements[$n] ne '');
 				$a = 'W' if ($elements[$n] =~ /\s$/);
 				$a = 'C' if ($elements[$n] =~ /$;$/);
 				$a = 'B' if ($elements[$n] =~ /(\[|\()$/);
 				$a = 'O' if ($elements[$n] eq '');
 				$a = 'E' if ($ca =~ /^\s*$/);
 
 				my $op = $elements[$n + 1];
 
 				my $c = '';
 				if (defined $elements[$n + 2]) {
 					$c = 'V' if ($elements[$n + 2] ne '');
 					$c = 'W' if ($elements[$n + 2] =~ /^\s/);
 					$c = 'C' if ($elements[$n + 2] =~ /^$;/);
 					$c = 'B' if ($elements[$n + 2] =~ /^(\)|\]|;)/);
 					$c = 'O' if ($elements[$n + 2] eq '');
 					$c = 'E' if ($elements[$n + 2] =~ /^\s*\\$/);
 				} else {
 					$c = 'E';
 				}
 
 				my $ctx = "${a}x${c}";
 
 				my $at = "(ctx:$ctx)";
 
 				my $ptr = substr($blank, 0, $off) . "^";
 				my $hereptr = "$hereline$ptr\n";
 
 				# Pull out the value of this operator.
 				my $op_type = substr($curr_values, $off + 1, 1);
 
 				# Get the full operator variant.
 				my $opv = $op . substr($curr_vars, $off, 1);
 
 				# Ignore operators passed as parameters.
 				if ($op_type ne 'V' &&
 				    $ca =~ /\s$/ && $cc =~ /^\s*,/) {
 
 #				# Ignore comments
 #				} elsif ($op =~ /^$;+$/) {
 
 				# ; should have either the end of line or a space or \ after it
 				} elsif ($op eq ';') {
 					if ($ctx !~ /.x[WEBC]/ &&
 					    $cc !~ /^\\/ && $cc !~ /^;/) {
 						ERROR("space required after that '$op' $at\n" . $hereptr);
 					}
 
 				# // is a comment
 				} elsif ($op eq '//') {
 
 				# Ignore : used in class declaration in C++
 				} elsif ($opv eq ':B' && $ctx =~ /Wx[WE]/ &&
 						 $line =~ /class/ && $realfile =~ /(\.cpp|\.h)$/) {
 
 				# No spaces for:
 				#   ->
 				#   :   when part of a bitfield
 				} elsif ($op eq '->' || $opv eq ':B') {
 					if ($ctx =~ /Wx.|.xW/) {
 						ERROR("spaces prohibited around that '$op' $at\n" . $hereptr);
 					}
 
 				# , must have a space on the right.
                                 # not required when having a single },{ on one line
 				} elsif ($op eq ',') {
 					if ($ctx !~ /.x[WEC]/ && $cc !~ /^}/ &&
                                             ($elements[$n] . $elements[$n + 2]) !~ " *}\\{") {
 						ERROR("space required after that '$op' $at\n" . $hereptr);
 					}
 
 				# '*' as part of a type definition -- reported already.
 				} elsif ($opv eq '*_') {
 					#warn "'*' is part of type\n";
 
 				# unary operators should have a space before and
 				# none after.  May be left adjacent to another
 				# unary operator, or a cast
 				} elsif ($op eq '!' || $op eq '~' ||
 					 $opv eq '*U' || $opv eq '-U' ||
 					 $opv eq '&U' || $opv eq '&&U') {
 					if ($op eq '~' && $ca =~ /::$/ && $realfile =~ /(\.cpp|\.h)$/) {
 						# '~' used as a name of Destructor
 
 					} elsif ($ctx !~ /[WEBC]x./ && $ca !~ /(?:\)|!|~|\*|-|\&|\||\+\+|\-\-|\{)$/) {
 						ERROR("space required before that '$op' $at\n" . $hereptr);
 					}
 					if ($op eq '*' && $cc =~/\s*$Modifier\b/) {
 						# A unary '*' may be const
 
 					} elsif ($ctx =~ /.xW/) {
 						ERROR("space prohibited after that '$op' $at\n" . $hereptr);
 					}
 
 				# unary ++ and unary -- are allowed no space on one side.
 				} elsif ($op eq '++' or $op eq '--') {
 					if ($ctx !~ /[WEOBC]x[^W]/ && $ctx !~ /[^W]x[WOBEC]/) {
 						ERROR("space required one side of that '$op' $at\n" . $hereptr);
 					}
 					if ($ctx =~ /Wx[BE]/ ||
 					    ($ctx =~ /Wx./ && $cc =~ /^;/)) {
 						ERROR("space prohibited before that '$op' $at\n" . $hereptr);
 					}
 					if ($ctx =~ /ExW/) {
 						ERROR("space prohibited after that '$op' $at\n" . $hereptr);
 					}
 
 				# A colon needs no spaces before when it is
 				# terminating a case value or a label.
 				} elsif ($opv eq ':C' || $opv eq ':L') {
 					if ($ctx =~ /Wx./) {
 						ERROR("space prohibited before that '$op' $at\n" . $hereptr);
 					}
 
 				# All the others need spaces both sides.
 				} elsif ($ctx !~ /[EWC]x[CWE]/) {
 					my $ok = 0;
 
 					if ($realfile =~ /\.cpp|\.h$/) {
 						# Ignore template arguments <...> in C++
 						if (($op eq '<' || $op eq '>') && $line =~ /<.*>/) {
 							$ok = 1;
 						}
 
 						# Ignore :: in C++
 						if ($op eq '::') {
 							$ok = 1;
 						}
 					}
 
 					# Ignore email addresses <foo@bar>
 					if (($op eq '<' &&
 					     $cc =~ /^\S+\@\S+>/) ||
 					    ($op eq '>' &&
 					     $ca =~ /<\S+\@\S+$/))
 					{
 						$ok = 1;
 					}
 
 					# Ignore ?:
 					if (($opv eq ':O' && $ca =~ /\?$/) ||
 					    ($op eq '?' && $cc =~ /^:/)) {
 						$ok = 1;
 					}
 
 					if ($ok == 0) {
 						ERROR("spaces required around that '$op' $at\n" . $hereptr);
 					}
 				}
 				$off += length($elements[$n + 1]);
 			}
 		}
 
 #need space before brace following if, while, etc
 		if (($line =~ /\(.*\)\{/ && $line !~ /\($Type\)\{/) ||
 		    $line =~ /do\{/) {
 			ERROR("space required before the open brace '{'\n" . $herecurr);
 		}
 
 # closing brace should have a space following it when it has anything
 # on the line
 		if ($line =~ /}(?!(?:,|;|\)))\S/) {
 			ERROR("space required after that close brace '}'\n" . $herecurr);
 		}
 
 # check spacing on square brackets
 		if ($line =~ /\[\s/ && $line !~ /\[\s*$/) {
 			ERROR("space prohibited after that open square bracket '['\n" . $herecurr);
 		}
 		if ($line =~ /\s\]/) {
 			ERROR("space prohibited before that close square bracket ']'\n" . $herecurr);
 		}
 
 # check spacing on parentheses
 		if ($line =~ /\(\s/ && $line !~ /\(\s*(?:\\)?$/ &&
 		    $line !~ /for\s*\(\s+;/) {
 			ERROR("space prohibited after that open parenthesis '('\n" . $herecurr);
 		}
 		if ($line =~ /(\s+)\)/ && $line !~ /^.\s*\)/ &&
 		    $line !~ /for\s*\(.*;\s+\)/ &&
 		    $line !~ /:\s+\)/) {
 			ERROR("space prohibited before that close parenthesis ')'\n" . $herecurr);
 		}
 
 		if ($line =~ /^.\s*(Q(?:S?LIST|SIMPLEQ|TAILQ)_HEAD)\s*\(\s*[^,]/ &&
 		    $line !~ /^.typedef/) {
 		    ERROR("named $1 should be typedefed separately\n" . $herecurr);
 		}
 
 # Return needs parens
 		if ($line =~ /^.\s*return [^(]/) {
 		    ERROR("parentheses required on return\n" . $herecurr);
 		}
 
 # Need a space before open parenthesis after if, while etc
 		if ($line=~/\b(if|while|for|switch|return)\(/) {
 			ERROR("space required before the open parenthesis '('\n" . $herecurr);
 		}
 
 # Check for illegal assignment in if conditional -- and check for trailing
 # statements after the conditional.
 		if ($line =~ /do\s*(?!{)/) {
 			my ($stat_next) = ctx_statement_block($line_nr_next,
 						$remain_next, $off_next);
 			$stat_next =~ s/\n./\n /g;
 			##print "stat<$stat> stat_next<$stat_next>\n";
 
 			if ($stat_next =~ /^\s*while\b/) {
 				# If the statement carries leading newlines,
 				# then count those as offsets.
 				my ($whitespace) =
 					($stat_next =~ /^((?:\s*\n[+-])*\s*)/s);
 				my $offset =
 					statement_rawlines($whitespace) - 1;
 
 				$suppress_whiletrailers{$line_nr_next +
 								$offset} = 1;
 			}
 		}
 		if (!defined $suppress_whiletrailers{$linenr} &&
 		    $line =~ /\b(?:if|while|for)\s*\(/ && $line !~ /^.\s*#/) {
 			my ($s, $c) = ($stat, $cond);
 
 #			if ($c =~ /\bif\s*\(.*[^<>!=]=[^=].*/s) {
 #				ERROR("do not use assignment in if condition\n" . $herecurr);
 #			}
 
 			# Find out what is on the end of the line after the
 			# conditional.
 			substr($s, 0, length($c), '');
 			$s =~ s/\n.*//g;
 			$s =~ s/$;//g; 	# Remove any comments
 			if (length($c) && $s !~ /^\s*{?\s*\\*\s*$/ &&
 			    $c !~ /}\s*while\s*/)
 			{
 				# Find out how long the conditional actually is.
 				my @newlines = ($c =~ /\n/gs);
 				my $cond_lines = 1 + $#newlines;
 				my $stat_real = '';
 
 				$stat_real = raw_line($linenr, $cond_lines)
 							. "\n" if ($cond_lines);
 				if (defined($stat_real) && $cond_lines > 1) {
 					$stat_real = "[...]\n$stat_real";
 				}
 
 				ERROR("trailing statements should be on next line\n" . $herecurr . $stat_real);
 			}
 		}
 
 # Check for bitwise tests written as boolean
 		if ($line =~ /
 			(?:
 				(?:\[|\(|\&\&|\|\|)
 				\s*0[xX][0-9]+\s*
 				(?:\&\&|\|\|)
 			|
 				(?:\&\&|\|\|)
 				\s*0[xX][0-9]+\s*
 				(?:\&\&|\|\||\)|\])
 			)/x)
 		{
 			ERROR("boolean test with hexadecimal, perhaps just 1 \& or \|?\n" . $herecurr);
 		}
 
 # if and else should not have general statements after it
 		if ($line =~ /^.\s*(?:}\s*)?else\b(.*)/) {
 			my $s = $1;
 			$s =~ s/$;//g; 	# Remove any comments
 			if ($s !~ /^\s*(?:\sif|(?:{|)\s*\\?\s*$)/) {
 				ERROR("trailing statements should be on next line\n" . $herecurr);
 			}
 		}
 # if should not continue a brace
 		if ($line =~ /}\s*if\b/) {
 			ERROR("trailing statements should be on next line\n" .
 				$herecurr);
 		}
 # case and default should not have general statements after them
 		if ($line =~ /^.\s*(?:case\s*.*|default\s*):/g &&
 		    $line !~ /\G(?:
 			(?:\s*$;*)(?:\s*{)?(?:\s*$;*)(?:\s*\\)?\s*$|
 			\s*return\s+
 		    )/xg)
 		{
 			ERROR("trailing statements should be on next line\n" . $herecurr);
 		}
 
 		# Check for }<nl>else {, these must be at the same
 		# indent level to be relevant to each other.
 		if ($prevline=~/}\s*$/ and $line=~/^.\s*else\s*/ and
 						$previndent == $indent) {
 			ERROR("else should follow close brace '}'\n" . $hereprev);
 		}
 
 		if ($prevline=~/}\s*$/ and $line=~/^.\s*while\s*/ and
 						$previndent == $indent) {
 			my ($s, $c) = ctx_statement_block($linenr, $realcnt, 0);
 
 			# Find out what is on the end of the line after the
 			# conditional.
 			substr($s, 0, length($c), '');
 			$s =~ s/\n.*//g;
 
 			if ($s =~ /^\s*;/) {
 				ERROR("while should follow close brace '}'\n" . $hereprev);
 			}
 		}
 
 #no spaces allowed after \ in define
 		if ($line=~/\#\s*define.*\\\s$/) {
 			ERROR("Whitespace after \\ makes next lines useless\n" . $herecurr);
 		}
 
 # multi-statement macros should be enclosed in a do while loop, grab the
 # first statement and ensure its the whole macro if its not enclosed
 # in a known good container
 		if ($realfile !~ m@/vmlinux.lds.h$@ &&
 		    $line =~ /^.\s*\#\s*define\s*$Ident(\()?/) {
 			my $ln = $linenr;
 			my $cnt = $realcnt;
 			my ($off, $dstat, $dcond, $rest);
 			my $ctx = '';
 
 			my $args = defined($1);
 
 			# Find the end of the macro and limit our statement
 			# search to that.
 			while ($cnt > 0 && defined $lines[$ln - 1] &&
 				$lines[$ln - 1] =~ /^(?:-|..*\\$)/)
 			{
 				$ctx .= $rawlines[$ln - 1] . "\n";
 				$cnt-- if ($lines[$ln - 1] !~ /^-/);
 				$ln++;
 			}
 			$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[$ln-1]> len<" . length($lines[$ln-1]) . "\n";
 
 			# Extract the remainder of the define (if any) and
 			# rip off surrounding spaces, and trailing \'s.
 			$rest = '';
 			while ($off != 0 || ($cnt > 0 && $rest =~ /\\\s*$/)) {
 				#print "ADDING cnt<$cnt> $off <" . substr($lines[$ln - 1], $off) . "> rest<$rest>\n";
 				if ($off != 0 || $lines[$ln - 1] !~ /^-/) {
 					$rest .= substr($lines[$ln - 1], $off) . "\n";
 					$cnt--;
 				}
 				$ln++;
 				$off = 0;
 			}
 			$rest =~ s/\\\n.//g;
 			$rest =~ s/^\s*//s;
 			$rest =~ s/\s*$//s;
 
 			# Clean up the original statement.
 			if ($args) {
 				substr($dstat, 0, length($dcond), '');
 			} else {
 				$dstat =~ s/^.\s*\#\s*define\s+$Ident\s*//;
 			}
 			$dstat =~ s/$;//g;
 			$dstat =~ s/\\\n.//g;
 			$dstat =~ s/^\s*//s;
 			$dstat =~ s/\s*$//s;
 
 			# Flatten any parentheses and braces
 			while ($dstat =~ s/\([^\(\)]*\)/1/ ||
 			       $dstat =~ s/\{[^\{\}]*\}/1/ ||
 			       $dstat =~ s/\[[^\{\}]*\]/1/)
 			{
 			}
 
 			my $exceptions = qr{
 				$Declare|
 				module_param_named|
 				MODULE_PARAM_DESC|
 				DECLARE_PER_CPU|
 				DEFINE_PER_CPU|
 				__typeof__\(|
 				union|
 				struct|
 				\.$Ident\s*=\s*|
 				^\"|\"$
 			}x;
 			#print "REST<$rest> dstat<$dstat> ctx<$ctx>\n";
 			if ($rest ne '' && $rest ne ',') {
 				if ($rest !~ /while\s*\(/ &&
 				    $dstat !~ /$exceptions/)
 				{
 					ERROR("Macros with multiple statements should be enclosed in a do - while loop\n" . "$here\n$ctx\n");
 				}
 
 			} elsif ($ctx !~ /;/) {
 				if ($dstat ne '' &&
 				    $dstat !~ /^(?:$Ident|-?$Constant)$/ &&
 				    $dstat !~ /$exceptions/ &&
 				    $dstat !~ /^\.$Ident\s*=/ &&
 				    $dstat =~ /$Operators/)
 				{
 					ERROR("Macros with complex values should be enclosed in parenthesis\n" . "$here\n$ctx\n");
 				}
 			}
 		}
 
 # check for missing bracing around if etc
 		if ($line =~ /(^.*)\b(?:if|while|for)\b/ &&
 			$line !~ /\#\s*if/) {
 			my $allowed = 0;
 
 			# Check the pre-context.
 			if ($line =~ /(\}.*?)$/) {
 				my $pre = $1;
 
 				if ($line !~ /else/) {
 					print "APW: ALLOWED: pre<$pre> line<$line>\n"
 						if $dbg_adv_apw;
 					$allowed = 1;
 				}
 			}
 			my ($level, $endln, @chunks) =
 				ctx_statement_full($linenr, $realcnt, 1);
                         if ($dbg_adv_apw) {
                             print "APW: chunks<$#chunks> linenr<$linenr> endln<$endln> level<$level>\n";
                             print "APW: <<$chunks[1][0]>><<$chunks[1][1]>>\n"
                                 if $#chunks >= 1;
                         }
 			if ($#chunks >= 0 && $level == 0) {
 				my $seen = 0;
 				my $herectx = $here . "\n";
 				my $ln = $linenr - 1;
 				for my $chunk (@chunks) {
 					my ($cond, $block) = @{$chunk};
 
 					# If the condition carries leading newlines, then count those as offsets.
 					my ($whitespace) = ($cond =~ /^((?:\s*\n[+-])*\s*)/s);
 					my $offset = statement_rawlines($whitespace) - 1;
 
 					#print "COND<$cond> whitespace<$whitespace> offset<$offset>\n";
 
 					# We have looked at and allowed this specific line.
 					$suppress_ifbraces{$ln + $offset} = 1;
 
 					$herectx .= "$rawlines[$ln + $offset]\n[...]\n";
 					$ln += statement_rawlines($block) - 1;
 
 					substr($block, 0, length($cond), '');
 
 					my $spaced_block = $block;
 					$spaced_block =~ s/\n\+/ /g;
 
 					$seen++ if ($spaced_block =~ /^\s*\{/);
 
                                         print "APW: cond<$cond> block<$block> allowed<$allowed>\n"
                                             if $dbg_adv_apw;
 					if (statement_lines($cond) > 1) {
                                             print "APW: ALLOWED: cond<$cond>\n"
                                                 if $dbg_adv_apw;
                                             $allowed = 1;
 					}
 					if ($block =~/\b(?:if|for|while)\b/) {
                                             print "APW: ALLOWED: block<$block>\n"
                                                 if $dbg_adv_apw;
                                             $allowed = 1;
 					}
 					if (statement_block_size($block) > 1) {
                                             print "APW: ALLOWED: lines block<$block>\n"
                                                 if $dbg_adv_apw;
                                             $allowed = 1;
 					}
 				}
 				$allowed=1; # disable for now.
 				if ($seen != ($#chunks + 1) && !$allowed) {
 					ERROR("braces {} are necessary for all arms of this statement\n" . $herectx);
 				}
 			}
 		}
 		if (!defined $suppress_ifbraces{$linenr - 1} &&
 					$line =~ /\b(if|while|for|else)\b/ &&
 					$line !~ /\#\s*if/ &&
 					$line !~ /\#\s*else/) {
 			my $allowed = 0;
 
                         # Check the pre-context.
                         if (substr($line, 0, $-[0]) =~ /(\}\s*)$/) {
                             my $pre = $1;
 
                             if ($line !~ /else/) {
                                 print "APW: ALLOWED: pre<$pre> line<$line>\n"
                                     if $dbg_adv_apw;
                                 $allowed = 1;
                             }
                         }
 
 			my ($level, $endln, @chunks) =
 				ctx_statement_full($linenr, $realcnt, $-[0]);
 
 			# Check the condition.
 			my ($cond, $block) = @{$chunks[0]};
                         print "CHECKING<$linenr> cond<$cond> block<$block>\n"
                             if $dbg_adv_checking;
 			if (defined $cond) {
 				substr($block, 0, length($cond), '');
 			}
 			if (statement_lines($cond) > 1) {
                             print "APW: ALLOWED: cond<$cond>\n"
                                 if $dbg_adv_apw;
                             $allowed = 1;
 			}
 			if ($block =~/\b(?:if|for|while)\b/) {
                             print "APW: ALLOWED: block<$block>\n"
                                 if $dbg_adv_apw;
                             $allowed = 1;
 			}
 			if (statement_block_size($block) > 1) {
                             print "APW: ALLOWED: lines block<$block>\n"
                                 if $dbg_adv_apw;
                             $allowed = 1;
 			}
 			# Check the post-context.
 			if (defined $chunks[1]) {
 				my ($cond, $block) = @{$chunks[1]};
 				if (defined $cond) {
 					substr($block, 0, length($cond), '');
 				}
 				if ($block =~ /^\s*\{/) {
                                     print "APW: ALLOWED: chunk-1 block<$block>\n"
                                         if $dbg_adv_apw;
                                     $allowed = 1;
 				}
 			}
                         print "DCS: level=$level block<$block> allowed=$allowed\n"
                             if $dbg_adv_dcs;
 			if ($level == 0 && $block !~ /^\s*\{/ && !$allowed) {
 				my $herectx = $here . "\n";;
 				my $cnt = statement_rawlines($block);
 
 				for (my $n = 0; $n < $cnt; $n++) {
 					$herectx .= raw_line($linenr, $n) . "\n";;
 				}
 
 				WARN("braces {} are encouraged even for single statement blocks\n" . $herectx);
 			}
 		}
 
 # warn about #if 0
 		if ($line =~ /^.\s*\#\s*if\s+0\b/) {
 			ERROR("if this code is redundant consider removing it\n" .
 				$herecurr);
 		}
 
 # Check that the storage class is at the beginning of a declaration
 		if ($line =~ /\b$Storage\b/ && $line !~ /^.\s*$Storage\b/) {
 			ERROR("storage class should be at the beginning of the declaration\n" . $herecurr)
 		}
 
 # check the location of the inline attribute, that it is between
 # storage class and type.
 		if ($line =~ /\b$Type\s+$Inline\b/ ||
 		    $line =~ /\b$Inline\s+$Storage\b/) {
 			ERROR("inline keyword should sit between storage class and type\n" . $herecurr);
 		}
 
 # check for sizeof(&)
 		if ($line =~ /\bsizeof\s*\(\s*\&/) {
 			ERROR("sizeof(& should be avoided\n" . $herecurr);
 		}
 
 # check for new externs in .c files.
 		if ($realfile =~ /\.c$/ && defined $stat &&
 		    $stat =~ /^.\s*(?:extern\s+)?$Type\s+($Ident)(\s*)\(/s)
 		{
 			my $function_name = $1;
 			my $paren_space = $2;
 
 			my $s = $stat;
 			if (defined $cond) {
 				substr($s, 0, length($cond), '');
 			}
 			if ($s =~ /^\s*;/ &&
 			    $function_name ne 'uninitialized_var')
 			{
 				ERROR("externs should be avoided in .c files\n" .  $herecurr);
 			}
 
 			if ($paren_space =~ /\n/) {
 				ERROR("arguments for function declarations should follow identifier\n" . $herecurr);
 			}
 
 		} elsif ($realfile =~ /\.c$/ && defined $stat &&
 		    $stat =~ /^.\s*extern\s+/)
 		{
 			ERROR("externs should be avoided in .c files\n" .  $herecurr);
 		}
 
 # check for gcc specific __FUNCTION__
 		if ($line =~ /__FUNCTION__/) {
 			ERROR("__func__ should be used instead of gcc specific __FUNCTION__\n"  . $herecurr);
 		}
 
 # recommend sigaction over signal for portability, when establishing a handler
 		if ($line =~ /\bsignal\s*\(/ && !($line =~ /SIG_(?:IGN|DFL)/)) {
 			ERROR("use sigaction to establish signal handlers; signal is not portable\n" . $herecurr);
 		}
 
 # format strings checks
 		my $string;
 		while ($line =~ /(?:^|")([X\t]*)(?:"|$)/g) {
 			$string = substr($rawline, $-[1], $+[1] - $-[1]);
 			$string =~ s/%%/__/g;
 			# check for %L{u,d,i} in strings
 			if ($string =~ /(?<!%)%L[udi]/) {
 				ERROR("\%Ld/%Lu are not-standard C, use %lld/%llu\n" . $herecurr);
 			}
 		}
 
 	# Continue checking for error messages that contains newlines. This
 	# check handles cases where string literals are spread over multiple lines.
 	# Example:
 	# error_report("Error msg line #1"
 	#              "Error msg line #2\n");
 	my $quoted_newline_regex = qr{\+\s*\".*\\n.*\"};
 	my $continued_str_literal = qr{\+\s*\".*\"};
 
 	if ($rawline =~ /$quoted_newline_regex/) {
 		# Backtrack to first line that does not contain only a quoted literal
 		# and assume that it is the start of the statement.
 		my $i = $linenr - 2;
 
 		while (($i >= 0) & $rawlines[$i] =~ /$continued_str_literal/) {
 			$i--;
 		}
 	}
 
 	}
 
 	if ($has_sob == 0) {
 	    ERROR("Missing Signed-off-by: line");
 	}
 
 	# If we have no input at all, then there is nothing to report on
 	# so just keep quiet.
 	if ($#rawlines == -1) {
 		return 1;
 	}
 
 	# In mailback mode only produce a report in the negative, for
 	# things that appear to be patches.
 	if ($mailback && ($clean == 1 || !$is_patch)) {
 		return 1;
 	}
 
 	# This is not a patch, and we are are in 'no-patch' mode so
 	# just keep quiet.
 	if (!$chk_patch && !$is_patch) {
 		return 1;
 	}
 
 	if (!$is_patch && $filename !~ /cover-letter\.patch$/) {
 		ERROR("Does not appear to be a unified-diff format patch\n");
 	}
 
 	print report_dump();
 	if ($summary && !($clean == 1 && $quiet == 1)) {
 		print "$filename " if ($summary_file);
 		print "total: $cnt_error errors, $cnt_warn warnings, " .
 			"$cnt_lines lines checked\n";
 		print "\n" if ($quiet == 0);
 	}
 
 	if ($quiet == 0) {
 		# If there were whitespace errors which cleanpatch can fix
 		# then suggest that.
 #		if ($rpt_cleaners) {
 #			print "NOTE: whitespace errors detected, you may wish to use scripts/cleanpatch or\n";
 #			print "      scripts/cleanfile\n\n";
 #		}
 	}
 
 	if ($clean == 1 && $quiet == 0) {
 		print "$vname has no obvious style problems and is ready for submission.\n"
 	}
 
 	return ($no_warnings ? $clean : $cnt_error == 0);
 }