From: Brendan Jackman <brendan.jackman@xxxxxxxxxxxxxxxxx> Subject: checkpatch: exclude sizeof sub-expressions from MACRO_ARG_REUSE The arguments of sizeof are not evaluated so arguments are safe to re-use in that context. Excluding sizeof subexpressions means macros like ARRAY_SIZE can pass checkpatch. Link: http://lkml.kernel.org/r/20190806070833.24423-1-brendan.jackman@xxxxxxxxxxxxxxxxx Signed-off-by: Brendan Jackman <brendan.jackman@xxxxxxxxxxxxxxxxx> Acked-by: Joe Perches <joe@xxxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- scripts/checkpatch.pl | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/scripts/checkpatch.pl~checkpatch-exclude-sizeof-sub-expressions-from-macro_arg_reuse +++ a/scripts/checkpatch.pl @@ -5204,7 +5204,7 @@ sub process { next if ($arg =~ /\.\.\./); next if ($arg =~ /^type$/i); my $tmp_stmt = $define_stmt; - $tmp_stmt =~ s/\b(typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g; + $tmp_stmt =~ s/\b(sizeof|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; _
