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Subject[PATCH] checkpatch: Look for c99 comments in ctx_locate_comment
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Date
Some checks look for comments around a specific function like
read_barrier_depends.

Extend the check to support both c89 and c90 comment styles.

c89 /* comment */
or
c99 // comment

For c99 comments, only look a 3 single lines, the line being scanned,
the line above and the line below the line being scanned rather than
the patch diff context.

Signed-off-by: Joe Perches <joe@perches.com>
---
scripts/checkpatch.pl | 10 +++++++++-
1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d64c67..0f4db4 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -1674,8 +1674,16 @@ sub ctx_statement_level {
sub ctx_locate_comment {
my ($first_line, $end_line) = @_;

+ # If c99 comment on the current line, or the line before or after
+ my ($current_comment) = ($rawlines[$end_line - 1] =~ m@^\+.*(//.*$)@);
+ return $current_comment if (defined $current_comment);
+ ($current_comment) = ($rawlines[$end_line - 2] =~ m@^[\+ ].*(//.*$)@);
+ return $current_comment if (defined $current_comment);
+ ($current_comment) = ($rawlines[$end_line] =~ m@^[\+ ].*(//.*$)@);
+ return $current_comment if (defined $current_comment);
+
# Catch a comment on the end of the line itself.
- my ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(?:\\\s*)?$@);
+ ($current_comment) = ($rawlines[$end_line - 1] =~ m@.*(/\*.*\*/)\s*(?:\\\s*)?$@);
return $current_comment if (defined $current_comment);

# Look through the context and try and figure out if there is a

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