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authorAntonio Borneo <borneo.antonio@gmail.com>2022-06-13 13:00:55 +0300
committerakpm <akpm@linux-foundation.org>2022-06-17 05:58:22 +0300
commitf858e23a29740757fe1ca602cb1f57845034b1c5 (patch)
tree1483ecc116c2b6cb0a80461e552a8d2ae94f600b /scripts/checkpatch.pl
parentdd7c9be330d87732766a95cfd7a6de38bf7a39c3 (diff)
downloadlinux-f858e23a29740757fe1ca602cb1f57845034b1c5.tar.xz
checkpatch: fix incorrect camelcase detection on numeric constant
The code fragment below int foo(int *array, int index) { return array[index & 0xFF]; } triggers an incorrect camelcase detection by checking a substring of the hex constant: CHECK: Avoid CamelCase: <xFF> #3: FILE: test.c:3: + return array[index & 0xFF]; This is caused by passing the whole string "array[index & 0xFF]" to the inner loop that iterates over a "$Ident" match. The numeric constant is not a $Ident as it doesn't start with [A-Za-z_] and should be excluded from the match. Similar issue can be detected with other constants like "1uL", "0xffffU". Force the match to start at word boundary so the $Ident will be properly checked starting from its first char and the constants will be filtered-out. Link: https://lkml.kernel.org/r/20220613100055.77821-1-borneo.antonio@gmail.com Signed-off-by: Antonio Borneo <borneo.antonio@gmail.com> Cc: Joe Perches <joe@perches.com> Cc: Andy Whitcroft <apw@canonical.com> Cc: Dwaipayan Ray <dwaipayanray1@gmail.com> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'scripts/checkpatch.pl')
-rwxr-xr-xscripts/checkpatch.pl2
1 files changed, 1 insertions, 1 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 205bf5055acf..79e759aac543 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -5721,7 +5721,7 @@ sub process {
$var !~ /^(?:[a-z0-9_]*|[A-Z0-9_]*)?_?[a-z][A-Z](?:_[a-z0-9_]+|_[A-Z0-9_]+)?$/ &&
#Ignore some three character SI units explicitly, like MiB and KHz
$var !~ /^(?:[a-z_]*?)_?(?:[KMGT]iB|[KMGT]?Hz)(?:_[a-z_]+)?$/) {
- while ($var =~ m{($Ident)}g) {
+ while ($var =~ m{\b($Ident)}g) {
my $word = $1;
next if ($word !~ /[A-Z][a-z]|[a-z][A-Z]/);
if ($check) {