diff options
| author |   Joe Perches <joe@perches.com> | 2015-04-16 12:44:05 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2015-04-17 09:03:56 -0400 |
| commit | 6ab3a9701e00c2a085bac6a7a9bdcf8fc5eca6c5 (patch) | |
| tree | 155ea8740728586cc4f8eb933158861a0953f41c /scripts | |
| parent | firmware/ihex2fw.c: restore missing default in switch statement (diff) | |
| download | linux-dev-6ab3a9701e00c2a085bac6a7a9bdcf8fc5eca6c5.tar.xz linux-dev-6ab3a9701e00c2a085bac6a7a9bdcf8fc5eca6c5.zip | |
checkpatch: improve "no space is necessary after a cast" test
The "no space is necessary after a cast" sizeof exclusion doesn't work
properly.
The test reports a false positive for code like:
BUILD_BUG_ON(sizeof(struct batadv_bla_claim_dst) != 6);
Make it work, simplify the exclusions, and add some comments.
Signed-off-by: Joe Perches <joe@perches.com>
Reported-by: Marek Lindner <mareklindner@neomailbox.ch>
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 | 11 |
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) { |