Success! I've recreated the bug! 
#!/opt/perl/bin/perl

use strict;
use warnings;

my $count = 0;

until ($@) {
  $count++;
  eval 'my $abc = 1; $abc++; ';
  unless ($count % 100000) {
    print $count . $/;
    print q(Expect crash) if $count > 999977609;
  }
}

print $@;
This produced:
....
1073700000 - Expect crash
Global symbol "$abc" requires explicit package name at (eval 1073741770) line 1.
So, there is a limit. This was run on perl 5.12.2, though the crashing system runs perl 5.8.9.

In reply to Bug recreated, you stopped just before the action by Jeppe
in thread Interpreter eval counter out of bounds by andreas1234567

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