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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@bluwireless.co.uk
Signed-off-by: Brendan Jackman <brendan.jackman@bluwireless.co.uk>
Acked-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Brendan Jackman 2019-09-25 16:46:41 -07:00 committed by Linus Torvalds
parent a8dd86bf74
commit 6dba824e9e
1 changed files with 1 additions and 1 deletions
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2
scripts/checkpatch.pl
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@ -5204,7 +5204,7 @@ sub process {
next if ($arg =~ /\.\.\./); next if ($arg =~ /\.\.\./);
next if ($arg =~ /^type$/i); next if ($arg =~ /^type$/i);
my $tmp_stmt = $define_stmt; 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; $tmp_stmt =~ s/\#+\s*$arg\b//g;
$tmp_stmt =~ s/\b$arg\s*\#\#//g; $tmp_stmt =~ s/\b$arg\s*\#\#//g;
my $use_cnt = () = $tmp_stmt =~ /\b$arg\b/g; my $use_cnt = () = $tmp_stmt =~ /\b$arg\b/g;