diff options
| -rwxr-xr-x | scripts/checkpatch.pl | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 3e0b3f4d342..57f10db4acc 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -3254,6 +3254,20 @@ sub process { } } +# if statements using unnecessary parentheses - ie: if ((foo == bar)) + if ($^V && $^V ge 5.10.0 && + $line =~ /\bif\s*((?:\(\s*){2,})/) { + my $openparens = $1; + my $count = $openparens =~ tr@\(@\(@; + my $msg = ""; + if ($line =~ /\bif\s*(?:\(\s*){$count,$count}$LvalOrFunc\s*($Compare)\s*$LvalOrFunc(?:\s*\)){$count,$count}/) { + my $comp = $4; #Not $1 because of $LvalOrFunc + $msg = " - maybe == should be = ?" if ($comp eq "=="); + WARN("UNNECESSARY_PARENTHESES", + "Unnecessary parentheses$msg\n" . $herecurr); + } + } + # Return of what appears to be an errno should normally be -'ve if ($line =~ /^.\s*return\s*(E[A-Z]*)\s*;/) { my $name = $1; |