The patch titled
Subject: checkpatch: add --strict test for precedence challenged macro arguments
has been added to the -mm tree. Its filename is
checkpatch-add-strict-test-for-precedence-challenged-macro-arguments.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/checkpatch-add-strict-test-for-precedence-challenged-macro-arguments.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/checkpatch-add-strict-test-for-precedence-challenged-macro-arguments.patch
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*** Remember to use Documentation/SubmitChecklist when testing your code ***
The -mm tree is included into linux-next and is updated
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------------------------------------------------------
From: Joe Perches <joe@xxxxxxxxxxx>
Subject: checkpatch: add --strict test for precedence challenged macro arguments
Add a test for macro arguents that have a non-comma leading or trailing
operator where the argument isn't parenthesized to avoid possible precedence
issues.
Link: http://lkml.kernel.org/r/47715508972f8d786f435e583ff881dbeee3a114.1473745855.git.joe@xxxxxxxxxxx
Signed-off-by: Joe Perches <joe@xxxxxxxxxxx>
Cc: Andy Whitcroft <apw@xxxxxxxxxxxxx>
Cc: Julia Lawall <julia.lawall@xxxxxxx>
Cc: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
scripts/checkpatch.pl | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff -puN scripts/checkpatch.pl~checkpatch-add-strict-test-for-precedence-challenged-macro-arguments scripts/checkpatch.pl
--- a/scripts/checkpatch.pl~checkpatch-add-strict-test-for-precedence-challenged-macro-arguments
+++ a/scripts/checkpatch.pl
@@ -4836,7 +4836,7 @@ sub process {
# check if any macro arguments are reused (ignore '...' and 'type')
foreach my $arg (@def_args) {
next if ($arg =~ /\.\.\./);
- next if ($arg =~ /^type$/);
+ next if ($arg =~ /^type$/i);
my $tmp = $define_stmt;
$tmp =~ s/\b(typeof|__typeof__|__builtin\w+|typecheck\s*\(\s*$Type\s*,|\#+)\s*\(*\s*$arg\s*\)*\b//g;
$tmp =~ s/\#\s*$arg\b//g;
@@ -4845,6 +4845,13 @@ sub process {
if ($use_cnt > 1) {
CHK("MACRO_ARG_REUSE",
"Macro argument reuse '$arg' - possible side-effects?\n" . "$herectx");
+ }
+# check if any macro arguments may have other precedence issues
+ if ($define_stmt =~ m/($Operators)?\s*\b$arg\b\s*($Operators)?/m &&
+ ((defined($1) && $1 ne ',') ||
+ (defined($2) && $2 ne ','))) {
+ CHK("MACRO_ARG_PRECEDENCE",
+ "Macro argument '$arg' may be better as '($arg)' to avoid precedence issues\n" . "$herectx");
}
}
_
Patches currently in -mm which might be from joe@xxxxxxxxxxx are
seq-proc-modify-seq_put_decimal_ll-to-take-a-const-char-not-char.patch
meminfo-break-apart-a-very-long-seq_printf-with-ifdefs.patch
spellingtxt-modeled-is-spelt-correctly.patch
checkpatch-see-if-modified-files-are-marked-obsolete-in-maintainers.patch
checkpatch-look-for-symbolic-permissions-and-suggest-octal-instead.patch
checkpatch-test-multiple-line-block-comment-alignment.patch
checkpatch-dont-test-for-prefer-ether_addr_foo.patch
checkpatch-externalize-the-structs-that-should-be-const.patch
const_structscheckpatch-add-frequently-used-from-julia-lawalls-list.patch
checkpatch-speed-up-checking-for-filenames-in-sections-marked-obsolete.patch
checkpatch-improve-the-block-comment-alignment-test.patch
checkpatch-add-strict-test-for-macro-argument-reuse.patch
checkpatch-add-strict-test-for-precedence-challenged-macro-arguments.patch
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