use warnings;
use strict;

sub A
 {
 return 0  if $_[1] == 0; 
 return 2*$_[1]  if $_[0] == 0;
 return 2  if $_[1] == 1;
 # figure A(m-1, A(m, n-1)) using in-place parameter list to save stac
+k.
 --$_[1];
 $_[1]= &A;
 --$_[0];
 return &A;
 }

print A ($ARGV[0], $ARGV[1]);

[download]
Ackerman 3 3 prints a few lines to the effect of "attempt to free unreferenced scaler at..." but the file name is messed up. Then it terminates with an attempted memory write to a protected location of 0x0000013b (i.e. a stray pointer).

Anybody else care to try?

—John

In reply to Ackerman vs. Perl : KO in 3 rounds by John M. Dlugosz

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