Re: [PATCH V2] checkpatch: Improve "return is not a function" test

[Joe Perches <joe@perches.com>]

On Mon, 2013-11-04 at 14:21 -0800, Andrew Morton wrote:
> On Thu, 31 Oct 2013 16:12:44 -0700 Joe Perches <joe@perches.com> wrote:
> 
> > This now uses the "$balanced_parens" test and also makes
> > the test depend on perl v5.10 and higher.
> 
> What happens if one uses an older perl version?  A mysterious-looking
> splat, I assume?
> 
> It would be nicer to have some explicit perl version test which tells
> user what the problem is, and which perl version is needed?
> 

There is such a test already.
You Signed-off on it.

commit d62a201f24cba74e2fbf9f6f7af86ff5f5e276fc
Author: Dave Hansen <dave.hansen@linux.intel.com>
Date:   Wed Sep 11 14:23:56 2013 -0700

    checkpatch: enforce sane perl version
    
    I got a bug report from a couple of users who said checkpatch.pl was
    broken for them.  It was erroring out on fairly random lines most commonly
    with messages like:
    
        Nested quantifiers in regex; marked by <--HERE in m/(\((?:[^\(\)]++ <-
    
    The bug reporter was running a version of perl 5.8 which was end-of-lifed
    in 2008: http://www.cpan.org/src/.  Versions of perl this old are at
    _best_ quite untested.  At worst, they are crusty and known to be
    completely broken.
    
    If folks have a system _that_ old, then we should have mercy on them and
    give them a half-decent error message rather than fail with nutty error
    messages.
    
    This patch enforces that checkpatch.pl is run with perl 5.10, which was
    end-of-lifed in 2009.  The new --ignore-perl-version command-line switch
    will let folks override this if they want.
    
    Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
    Cc: Joe Perches <joe@perches.com>
    Cc: Andy Whitcroft <apw@shadowen.org>
    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>