cause perl to die on use of unintialized variables

[david2008]

Hi all,

I want perl in the development phase to be stricter and die on use of uninitialized variables.
I did not find something with googling.
Is there a possibility to make this ?

Thanks,
David

[moritz]

use warnings FATAL => qw(uninitialized);

should do what you want.

Update: if you don't want to add that to your file, but rather want it confined to development uses only, you can also run your perl script as

$ perl -Mwarnings=FATAL,uninitialized  filename.pl

to get that effect without modifying your script. But beware, it can be overridden inside the script, or in modules used by the script.

For more information on the warnings pragma, please consult perllexwarn.

[chromatic]

The warnings pragma has a FATAL option:

use warnings FATAL => 'uninitialized';

This has a lexical scope, so you have to enable it in every scope in which you want it to take effect. See perllexwarn. Alternately you can set up your own global warn handler by sticking a code ref in $SIG{__WARN__}, but that's uglier.