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-rwxr-xr-xscripts/checkpatch.pl11
1 files changed, 9 insertions, 2 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index d12435992dea..421bbb47844f 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -2552,8 +2552,15 @@ sub process {
}
}
- if ($line =~ /^\+.*(\w+\s*)?\(\s*$Type\s*\)[ \t]+(?!$Assignment|$Arithmetic|[,;:\?\(\{\}\[\<\>]|&&|\|\||\\$)/ &&
- (!defined($1) || $1 !~ /sizeof\s*/)) {
+# check for space after cast like "(int) foo" or "(struct foo) bar"
+# avoid checking a few false positives:
+# "sizeof(<type>)" or "__alignof__(<type>)"
+# function pointer declarations like "(*foo)(int) = bar;"
+# structure definitions like "(struct foo) { 0 };"
+# multiline macros that define functions
+# known attributes or the __attribute__ keyword
+ if ($line =~ /^\+(.*)\(\s*$Type\s*\)([ \t]++)((?![={]|\\$|$Attribute|__attribute__))/ &&
+ (!defined($1) || $1 !~ /\b(?:sizeof|__alignof__)\s*$/)) {
if (CHK("SPACING",
"No space is necessary after a cast\n" . $herecurr) &&
$fix) {