Re^3: determine the variable causing the error: Use of uninitialized value

AnomalousMonk it's correct what you say, but it only work with scalars, it doesn't work with more complex structures like hashes (or references to hashes):

EXAMPLE:

 perl -wMstrict -le 'print qq{perl version: $] \n};;; my $x; my %y= ("
+h"=>1, "i"=>2);  print $x, $y{x}; printf "%s", $x;'
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OUTPUT:

perl version: 5.018002

Use of uninitialized value $x in print at -e line 1.
Use of uninitialized value in print at -e line 1.

Use of uninitialized value $x in printf at -e line 1.
</b>
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Comment on Re^3: determine the variable causing the error: Use of uninitialized value Select or Download Code

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Re^4: determine the variable causing the error: Use of uninitialized value by LanX (Saint) on Apr 13, 2017 at 19:35 UTC
> it doesn't work with more complex structures like hashes (or references to hashes) To rephrase it, your problem are undefined elements of data structures like $h{x}. I don't think there is any out of the box solution and you'd need to send a feature request. As a side note: a hack could be to add a signal handler which parses the OP tree at the caller for all undefined entries . But that's far from trivial. Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :) Je suis Charlie!}	[reply]
Re^5: determine the variable causing the error: Use of uninitialized value (hack) by LanX (Saint) on Apr 15, 2017 at 01:25 UTC
> As a side note: a hack could be to add a signal handler which parses the OP tree at the caller for all undefined entries . see RFC: Adding variable name to warning "Use of uninitialized value ??? in ..." Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :) Je suis Charlie!}	[reply]
Re^5: determine the variable causing the error: Use of uninitialized value by ruqui (Acolyte) on Apr 16, 2017 at 02:37 UTC
Thank you for your suggestion Rolf, what should I do in order to send a feature request?	[reply]
Re^6: determine the variable causing the error: Use of uninitialized value by LanX (Saint) on Apr 16, 2017 at 11:38 UTC
I'm sorry but chances are too low, if you follow the discussion, especially the contributions by Dave_the_m you will see that is far too complicated too implement in core. update Anyway I've already shown code to help you in a pragmatic way Cheers Rolf _{(addicted to the Perl Programming Language and ☆☆☆☆ :) Je suis Charlie!}	[reply]

update