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Item7835: TWiki 6.0.2 doesn't work with Perl 5.26.1

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Detail

As observed in TWiki:Support.SID-02327, TWiki 6.0.2 doesn't work with Perl 5.26, which is shipped with Fedora 27.

I could reproduce this - not with Fedora, I'm not familiar with that distribution - but by compiling Perl 5.26 into a Debian system. I had hoped that this would only affect configure (where all warnings are promoted to errors) but unfortunately this is not the case:

Perl 5.26.1

Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/(\$TWiki::cfg{ <-- HERE [A-Za-z0-9{}]+})/ at /opt/twiki/lib/TWiki/Configure/Load.pm line 111.
Compilation failed in require at /opt/twiki/lib/TWiki.pm line 179.
BEGIN failed--compilation aborted at /opt/twiki/lib/TWiki.pm line 577.
Compilation failed in require at /opt/twiki/bin/view line 41.
BEGIN failed--compilation aborted at /opt/twiki/bin/view line 41.

So indeed, Perl's behaviour in 5.26 is again different from 5.24 where the same line just gave a warning:

Perl 5.24.1

Unescaped left brace in regex is deprecated, passed through in regex; marked by <-- HERE in m/(\$TWiki::cfg{ <-- HERE [A-Za-z0-9{}]+})/ at /opt/twiki/lib/TWiki/Configure/Load.pm line 111.

Now that there's a distribution out in the wild which ships with Perl 5.26, I flag this as urgent. Yet, there's no action required (other than releasing the upcoming version from SVN trunk) since the code has already been fixed for Item7797. I flag it as "Waiting for Release" to make sure it appears in the releas note.

-- TWiki:Main/HaraldJoerg - 2018-02-02

ItemTemplate
Summary TWiki 6.0.2 doesn't work with Perl 5.26.1
ReportedBy TWiki:Main.HaraldJoerg
Codebase 6.0.2
SVN Range TWiki-6.0.2-trunk, Fri, 03 Nov 2017, build 30403
AppliesTo Engine
Component

Priority Urgent
CurrentState Closed
WaitingFor

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TargetRelease

ReleasedIn

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Topic revision: r2 - 2018-07-17 - PeterThoeny
 
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