diff options
author | Joe Perches <joe@perches.com> | 2015-04-16 12:44:22 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-17 09:03:57 -0400 |
commit | ab7e23f3448e55f4808f443a7b98ded6707701bb (patch) | |
tree | 7e1411de9380c8a312cd4a7c9bb6b83a89d6ceb0 /scripts | |
parent | f34e4a4f979c0d39f741bc809127fcf2167a7389 (diff) | |
download | linux-ab7e23f3448e55f4808f443a7b98ded6707701bb.tar.bz2 |
checkpatch: add test for repeated const uses
Using 'const <type> const *' is generally meant to be written 'const
<type> * const'.
Add a test for the miswritten form.
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'scripts')
-rwxr-xr-x | scripts/checkpatch.pl | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 45babf2243f3..d54a814a4bc8 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -323,6 +323,7 @@ our $Operators = qr{ our $c90_Keywords = qr{do|for|while|if|else|return|goto|continue|switch|default|case|break}x; +our $BasicType; our $NonptrType; our $NonptrTypeMisordered; our $NonptrTypeWithAttr; @@ -514,6 +515,11 @@ sub build_types { my $Misordered = "(?x: \n" . join("|\n ", @typeListMisordered) . "\n)"; my $allWithAttr = "(?x: \n" . join("|\n ", @typeListWithAttr) . "\n)"; $Modifier = qr{(?:$Attribute|$Sparse|$mods)}; + $BasicType = qr{ + (?:$typeOtherOSTypedefs\b)| + (?:$typeTypedefs\b)| + (?:${all}\b) + }x; $NonptrType = qr{ (?:$Modifier\s+|const\s+)* (?: @@ -3192,6 +3198,18 @@ sub process { $herecurr); } +# check for const <foo> const where <foo> is not a pointer or array type + if ($sline =~ /\bconst\s+($BasicType)\s+const\b/) { + my $found = $1; + if ($sline =~ /\bconst\s+\Q$found\E\s+const\b\s*\*/) { + WARN("CONST_CONST", + "'const $found const *' should probably be 'const $found * const'\n" . $herecurr); + } elsif ($sline !~ /\bconst\s+\Q$found\E\s+const\s+\w+\s*\[/) { + WARN("CONST_CONST", + "'const $found const' should probably be 'const $found'\n" . $herecurr); + } + } + # check for non-global char *foo[] = {"bar", ...} declarations. if ($line =~ /^.\s+(?:static\s+|const\s+)?char\s+\*\s*\w+\s*\[\s*\]\s*=\s*\{/) { WARN("STATIC_CONST_CHAR_ARRAY", |