Gurus,

It's said that perl debugger support to set a breakpoint by a code reference. but I really never succeed to set such kind of breakpoint.

b $var        Set breakpoint at first line of subroutine referenced by $var.

I'd like to give an example including codes and my debug process.

#!/usr/bin/env perl
use 5.016;

my $mysubref = sub {
    say "This is code Ref 0";
    say "This is code Ref 1";
    say "This is code Ref 2";
};

testMethod();

sub testMethod
{
    say "in testMethod";
    &{$mysubref};
}

say "end the program";

[download]

The debug process is,

H:\store\workspace\myTestCodes>perl -d .\test6.pl

Loading DB routines from perl5db.pl version 1.37
Editor support available.

Enter h or 'h h' for help, or 'perldoc perldebug' for more help.

main::(.\test6.pl:8):   };

  DB<1> c 10
main::(.\test6.pl:10):  testMethod();

  DB<2> b $mysubref

  DB<3> L b
.\test6.pl:
 10:    testMethod();
   break if ($mysubref)

  DB<4> c
in testMethod
This is code Ref 0
This is code Ref 1
This is code Ref 2
end the program
Debugged program terminated.  Use q to quit or R to restart,
  use o inhibit_exit to avoid stopping after program termination,
  h q, h R or h o to get additional info.

  DB<4>

[download]

'b $mysubref' seems not to work.

Please tell me what's wrong here. How can I set a breakpoint by a code reference?

Thanks in advance.

In reply to how to set a breakpoint by a code reference by Matq

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