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checkpatch: handle do without braces if we have enough context 

If we have sufficient context detect and handle do without braces ({).
Else these incorrectly trigger a trailing statements error for the
associated while.

Signed-off-by: Andy Whitcroft <apw@shadowen.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Andy Whitcroft 2008-10-15 22:02:30 -07:00 committed by Linus Torvalds
parent a6a8406282
commit 170d3a2268
1 changed files with 24 additions and 3 deletions
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27
scripts/checkpatch.pl
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@ -1051,6 +1051,7 @@ sub process {
# suppression flags
my %suppress_ifbraces;
my %suppress_whiletrailers;
# Pre-scan the patch sanitizing the lines.
# Pre-scan the patch looking for any __setup documentation.
@ -1156,6 +1157,7 @@ sub process {
$prev_values = 'E';
%suppress_ifbraces = ();
%suppress_whiletrailers = ();
next;
# track the line number as we move through the hunk, note that
@ -1301,9 +1303,9 @@ sub process {
}
# Check for potential 'bare' types
my ($stat, $cond, $line_nr_next, $remain_next);
my ($stat, $cond, $line_nr_next, $remain_next, $off_next);
if ($realcnt && $line =~ /.\s*\S/) {
($stat, $cond, $line_nr_next, $remain_next) =
($stat, $cond, $line_nr_next, $remain_next, $off_next) =
ctx_statement_block($linenr, $realcnt, 0);
$stat =~ s/\n./\n /g;
$cond =~ s/\n./\n /g;
@ -1952,7 +1954,26 @@ sub process {
# Check for illegal assignment in if conditional -- and check for trailing
# statements after the conditional.
if ($line =~ /\b(?:if|while|for)\s*\(/ && $line !~ /^.\s*#/) {
if ($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*\(.*[^<>!=]=[^=].*/) {