I tried -MO=Deparse and -d options, passing them through system function however these did not provide any deeper understanding from my standpoint.

I maybe need to try passing some -D flags.

I've recently begun using padre with strawberry perl, and I am informed to Recompile perl with -DDEBUGING to use -D switch.

update: -Mdiagnostics=-verbose with debugger steps through some functions in the diagnostics module, such as diagnostics::death_trap and then splain's the error as:

Can't use an undefined value as an ARRAY reference at -e line 2 (#1)
    (F) A value used as either a hard reference or a symbolic 
    reference must be a defined value.  This helps to delurk
    some insidious errors.

Uncaught exception from user code:
        Can't use an undefined value as an ARRAY reference
        at -e line 2.
 at -e line 2

[download]

But this doesn't necessarily get to the l-value derivation of the issue. Also the -traceonly option only prints the uncaught exception part without the useful diagnostic provided pre-amble.

In reply to Re: Dereference of undefined value OK under strictures? by Don Coyote
in thread Dereference of undefined value OK under strictures? by AnomalousMonk

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