perldiag
perldiag
NAME
perldiag - various Perl diagnostics
DESCRIPTION
These messages are classified as follows (listed in increasing order of desperation):
(W) A warning (optional). (D) A deprecation (enabled by default). (S) A severe warning (enabled by default). (F) A fatal error (trappable). (P) An internal error you should never see (trappable). (X) A very fatal error (nontrappable). (A) An alien error message (not generated by Perl).
The majority of messages from the first three classifications above (W, D & S) can be controlled using the warnings
pragma.
If a message can be controlled by the warnings
pragma, i