Maybe this code makes it clearer:

 
sub jump { print "in\n"; goto BACK };
 
sub jump2 {goto &jump }
 
sub cont {
  for $i (0..1) {
    for $j ("a".."b") {
      print "$i,$j\t";
      jump2();          # works
      #goto &jump;      # fails
    BACK:
    }
  }
}
 
cont();

[download]

OUTPUT 

0,a    in
0,b    in
1,a    in
1,b    in

[download]
in simple words:

It's not only possible to jump within the same scope, but also into the scope of previous ("outer") call frames.

(Pity I thought I found an easy pattern for continuations...)

Cheers Rolf

In reply to Re^3: cross scope gotos? by LanX
in thread cross scope gotos? by LanX

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