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authorAndy Whitcroft <apw@canonical.com>2010-10-26 21:23:12 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2010-10-26 23:52:19 (GMT)
commitfb2d2c1b5825503d30fb6f2dc328dbe4a47d9794 (patch)
tree6fba2ec80498dcb83615ea27907c89e979902c85 /scripts/checkpatch.pl
parentd2c0a23514d8ac4ed10a8e742467cfb72ca3bed8 (diff)
checkpatch: ensure we do not collapse bracketed sections into constants
When determining if a return () sequence is a function style bracketing we simplify the expression one bracket at a time replacing each with a constant. However this can trigger a false merge with expressions as below: return (foo)0; Prevent this false merging. Reported-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Signed-off-by: Andy Whitcroft <apw@canonical.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.pl7
1 files changed, 4 insertions, 3 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 32d6a23..8d010ac 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2183,15 +2183,16 @@ sub process {
my $value = $2;
# Flatten any parentheses
- $value =~ s/\)\(/\) \(/g;
+ $value =~ s/\(/ \(/g;
+ $value =~ s/\)/\) /g;
while ($value =~ s/\[[^\{\}]*\]/1/ ||
$value !~ /(?:$Ident|-?$Constant)\s*
$Compare\s*
(?:$Ident|-?$Constant)/x &&
$value =~ s/\([^\(\)]*\)/1/) {
}
-
- if ($value =~ /^(?:$Ident|-?$Constant)$/) {
+#print "value<$value>\n";
+ if ($value =~ /^\s*(?:$Ident|-?$Constant)\s*$/) {
ERROR("return is not a function, parentheses are not required\n" . $herecurr);
} elsif ($spacing !~ /\s+/) {

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