An afterthought, but possibly a significant one. The error could be right there in Devel::StackTrace.

The code in question is trying to get the arguments that were passed to a sub from DB::args, but it doesn't check to see if there were any args passed to the sub (frame) in question.

Try modifying the line in the error message to read: 

my @a = $c[4] ? @DB::args : ();

[download]

and see if the problem goes away.

Logic: From Perlfunc:caller()

...$hasargs is true if a new instance of @_ was set up for the frame....

Furthermore, when called from within the DB package, caller returns more detailed information: it sets the list variable @DB::args to be the arguments with which the subroutine was invoked.

It doesn't say what the state of DB::args will be if $hasargs wasn't set. Making the attempt to get conditional upon $hasargs returned from caller ($c4) will exclude this possibility.

In the unlikely chance that this does affect a cure, be sure to report the problem and fix to the author.

Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"When I'm working on a problem, I never think about beauty. I think only how to solve the problem. But when I have finished, if the solution is not beautiful, I know it is wrong." -Richard Buckminster Fuller
If I understand your problem, I can solve it! Of course, the same can be said for you.

In reply to Re: Mason app dies with "Bizarre copy of array in aassign" by BrowserUk
in thread Mason app dies with "Bizarre copy of array in aassign" by Jobius

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