Fix: Sync latest Perl5 modules and restore Data::Dumper numified scalar handling

[fglock]

Summary

This PR syncs the latest Perl5 modules, updates dependencies, and fixes Data::Dumper's handling of numified scalars to match Perl5's XS behavior.

Changes

1. Perl5 Module Sync

Updated modules to latest versions from perl5/ tree:

• Archive::Tar and related modules (Tar.pm, Constant.pm, File.pm)
• IO::Socket::IP - socket handling improvements
• NEXT - legacy method dispatch updates
• Pod documentation - perldelta, perlclass, perlclassguts, perldebug, perlexperiment, perlhist, perlinterp, perlintro, perllocale, perlmodinstall, perlpolicy, perlvar
• Test::Builder - test framework improvements
• vars.pm - variable declaration pragma updates

2. Dependency Updates

• ASM: 9.9.1 → 9.10.1
• BouncyCastle: 1.78.1 → 1.84
• Commons Compress: 1.27.1 → 1.28.0
• JUnit Jupiter: 6.1.0-M1 → 6.1.1
• SQLite JDBC: 3.51.3.0 → 3.53.2.0

3. Data::Dumper Numeric Scalar Detection

The Problem

The test unit/data_dumper_numified.t was failing because Data::Dumper was outputting numeric values as quoted strings:

my $literal = 1556933584;
# Expected: 1556933584
# Got:      "1556933584"

Root Cause Analysis:

• Perl5's XS Data::Dumper checks internal SV flags (IOK/NOK) to detect numeric scalars
• Perl5's pure Perl Data::Dumper only uses a regex: /^(?:0|-?[1-9][0-9]{0,8})\z/
• This regex only matches numbers with 0-8 digits after the first digit (max 9 total digits)
• 10+ digit numbers are quoted even if they're numeric literals
• Pure Perl Perl5 has the same limitation - we verified this!

# Perl5 with pure Perl Data::Dumper:
$ perl -MData::Dumper -e '$Data::Dumper::Useperl=1; print Dumper(1556933584)'
$VAR1 = '1556933584';  # QUOTED!

# Perl5 with XS Data::Dumper:
$ perl -MData::Dumper -e 'print Dumper(1556933584)'
$VAR1 = 1556933584;  # Not quoted

The Solution

1. Improved RuntimeScalar.isDataDumperNumifiedSafeDecimal():

• INTEGER/DOUBLE types immediately return true (mimics Perl5's IOK/NOK flags)
• No longer restricted to 10-digit numbers
• Handles any size numeric scalar
• Properly validates negative numbers and zero
• Checks numified strings more accurately

2. Data::Dumper patch (Data-Dumper.pm.patch):

• Adds a check for _perlonjava_numified_safe_decimal() before the regex
• This method calls the improved RuntimeScalar implementation
• Bridges the gap between pure Perl limitations and XS capabilities
• Makes PerlOnJava's pure Perl Data::Dumper behave like Perl5's XS version

Why This Approach Works

PerlOnJava has an advantage: we can expose scalar type information (INTEGER, DOUBLE, STRING) that pure Perl Perl5 cannot access. By adding a hook in Data::Dumper's pure Perl code that calls back to our Java type system, we achieve XS-like behavior without needing actual XS code.

This is the correct solution because:

• It matches Perl5 XS behavior, not the limited pure Perl behavior
• The patch is necessary because pure Perl lacks access to internal type flags
• Future Perl5 syncs will automatically reapply the patch
• No special cases or workarounds in the numeric detection logic

Test Plan

• Unit test unit/data_dumper_numified.t passes (all 7 tests)
• Full test suite passes with make
• Data::Dumper correctly handles:
  • Numeric literals of any size
  • Strings used in numeric context
  • Assignment preserving numified state
  • int() function marking scalars as numified
  • Strings that haven't been numified (stay quoted)
  • Negative numbers and zero

Generated with

Claude Code