#135 Perl 5.22 support

[Evangelos Foutras]

Running cloc 1.64 on Perl 5.22 throws errors such as:

Can't use 'defined(@array)' (Maybe you should just omit the defined()?) at /usr/bin/cloc line 1284.

After several of those are fixed, the following warnings get emitted:

Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/^\begin{ <-- HERE code}/ at /usr/bin/cloc line 4626.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/^\end{ <-- HERE code}/ at /usr/bin/cloc line 4655.
Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/^\begin{ <-- HERE code}/ at /usr/bin/cloc line 4657.

The person who reported this to Arch Linux has also supplied a patch; you can find it attached to https://bugs.archlinux.org/task/45494

[Al Danial]

I understand the problem with the deprecated 'defined(@array)' stuff; the issue is that if I use the newer form, then I break support for legacy versions of Perl.

The other warnings are easily fixed by backslashing the {}.

I'll try to figure out a solution that satisfies old and new versions of Perl.

[Evangelos Foutras]

Do you know which Perl versions would break by removing "defined"? I was only able to find information about hashes, but nothing about arrays. [1]

[1] http://perldoc.perl.org/perl583delta.html#Core-Enhancements

[Al Danial]

I seem to recall 5.6.x didn't like the absence of defined. I could be mistaken though. Tomorrow I'll have access to some machines with old Perls and will test there. I just tried to build Perl 5.6.2 from source (on ubuntu 14.04 + gcc 4.8.4) but that build fails with C syntax errors.

[Al Danial]

I was mistaken; 5.6.1 (on an old Solaris box) had no issues without the defined(). I therefore removed those instances from the code & also fixed the braces issue; svn commit 461.

[Anonymous]

same error here.

Unescaped left brace in regex is deprecated here (and will be fatal in Perl 5.30), passed through in regex; marked by <-- HERE in m/^(.*?){ <-- HERE [^$]/ at /bin/cloc line 4850.

[Al Danial]

Note: cloc is no longer developed on sourceforge. Development now happens at https://github.com/AlDanial/cloc

Try using the lastest release, 1.76, available at https://github.com/AlDanial/cloc/releases, and see if that resolves your issue.