sorry I don't really know how to exactly phase my question. Hopefully the example can show what I can't phase right. 
A.pm
-----------
package A
use B;

B->foo();

B.pm
-----------
package B
sub foo{
     die 'your data is screwed';
}

[download]
When it dies it yeilds 'your data is screwed at B.pm line x'

what I would like is the die to report 'your data is screwed at A.pm line x'. x being the line number where B->foo was called.

What is the best way to accomplish this?

In reply to perl deferring die to calling method by arcnon

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