On Wed, 2012-09-05 at 13:21 +0200, Philippe De Muyter wrote: > On 5/27/11, Joe Perches <j...@perches.com> wrote: > > A common issue with min() or max() is using a cast on > > one or both of the arguments when using min_t/max_t could > > be better. > > > > Add cast detection to uses of min/max and suggest an > > appropriate use of min_t or max_t instead. > > > > Caveat: This only works for min() or max() on a single line. > > It does not find min() or max() split across multiple lines. > > > > This does find: > > min((u32)foo, bar); > > But it does not find: > > max((unsigned long)foo, > > bar); > > > > Suggested-by: Andrew Morton <a...@linux-foundation.org> > > Signed-off-by: Joe Perches <j...@perches.com> > > --- > > > > v2: Make $match_balanced_parentheses work in perl 5.8 > > Has this been applied ? > > v3.3 version of checkpatch.pl works for me, but v3.4, v3.5 & v3.6rc2 say: > Nested quantifiers in regex; marked by <-- HERE in m/(\((?:[^\(\)]++ > <-- HERE |(?-1))*\))/ at scripts/checkpatch.pl line 340. > > and my perl is : > > perl --version > > This is perl, v5.8.8 built for i586-linux-thread-multi
The current version of checkpatch skips this check when the perl version is less than 5.10.0 commit d7c76ba7e58bc3ca674f20759c686535db484749 Author: Joe Perches <j...@perches.com> Date: Tue Jan 10 15:09:58 2012 -0800 checkpatch: improve memset and min/max with cast checking Improve the checking of arguments to memset and min/max tests. Move the checking of min/max to statement blocks instead of single line. Change $Constant to allow any case type 0x initiator and trailing ul specifier. Add $FuncArg type as any function argument with or without a cast. Print the whole statement when showing memset or min/max messages. Improve the memset with 0 as 3rd argument error message. There are still weaknesses in the $FuncArg and $Constant code as arbitrary parentheses and negative signs are not generically supported. [] # Using $balanced_parens, $LvalOrFunc, or $FuncArg # requires at least perl version v5.10.0 # Any use must be runtime checked with $^V [] # typecasts on min/max could be min_t/max_t if ($^V && $^V ge 5.10.0 && defined $stat && $stat =~ /^\+(?:.*?)\b(min|max)\s*\(\s*$FuncArg\s*,\s*$FuncArg\s*\)/) { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/