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Perl 5 version 12.2 documentation
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Perl functions A-Z | Perl functions by category | The 'perlfunc' manpage

- dump LABEL

- dump

  This function causes an immediate core dump. See also the -u command-line switch in perlrun, which does the same thing. Primarily this is so that you can use the undump program (not supplied) to turn your core dump into an executable binary after having initialized all your variables at the beginning of the program. When the new binary is executed it will begin by executing a `goto LABEL` (with all the restrictions that `goto` suffers). Think of it as a goto with an intervening core dump and reincarnation. If `LABEL` is omitted, restarts the program from the top.

  WARNING: Any files opened at the time of the dump will not be open any more when the program is reincarnated, with possible resulting confusion by Perl.

  This function is now largely obsolete, mostly because it's very hard to convert a core file into an executable. That's why you should now invoke it as `CORE::dump()` , if you don't want to be warned against a possible typo.