* [PATCH v1] checkpatch: exclude four preprocessor sub-expressions from MACRO_ARG_REUSE
@ 2021-03-06 4:48 Vincent Mailhol
0 siblings, 0 replies; only message in thread
From: Vincent Mailhol @ 2021-03-06 4:48 UTC (permalink / raw)
To: Andy Whitcroft, Joe Perches, linux-kernel; +Cc: Vincent Mailhol
__must_be_array, offsetof, sizeof_field and __stringify are all
preprocessor macros and do not evaluate their arguments. As such, it
is safe not to warn when arguments are being reused in those four
sub-expressions.
Exclude those so that they can pass checkpatch.
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
---
scripts/checkpatch.pl | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index df8b23dc1eb0..25ee4fd5b118 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5736,7 +5736,7 @@ sub process {
next if ($arg =~ /\.\.\./);
next if ($arg =~ /^type$/i);
my $tmp_stmt = $define_stmt;
- $tmp_stmt =~ s/\b(sizeof|typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g;
+ $tmp_stmt =~ s/\b(__must_be_array|offsetof|sizeof|sizeof_field|__stringify|typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g;
$tmp_stmt =~ s/\#+\s*$arg\b//g;
$tmp_stmt =~ s/\b$arg\s*\#\#//g;
my $use_cnt = () = $tmp_stmt =~ /\b$arg\b/g;
--
2.26.2
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2021-03-06 4:48 [PATCH v1] checkpatch: exclude four preprocessor sub-expressions from MACRO_ARG_REUSE Vincent Mailhol
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