MAN page from Old RedHat 5.X perl-5.004-4.i386.rpm

Carp

Section: Perl Programmers Reference Guide (3)
Updated: perl 5.004, patch 04
Index

NAME

carp - warn of errors (from perspective of caller)

cluck - warn of errors with stack backtrace
(not exported by default)

croak - die of errors (from perspective of caller)

confess - die of errors with stack backtrace

SYNOPSIS

    use Carp;    croak "We're outta here!";

    use Carp qw(cluck);    cluck "This is how we got here!";

DESCRIPTION

The Carp routines are useful in your own modules becausethey act like die() or warn(), but report where the errorwas in the code they were called from. Thus if you have a routine Foo() that has a carp() in it, then the carp() will report the error as occurring where Foo() was called, not where carp() was called.

Forcing a Stack Trace

As a debugging aid, you can force Carp to treat a croak as a confessand a carp as a cluck across all modules. In other words, force adetailed stack trace to be given. This can be very helpful when tryingto understand why, or from where, a warning or error is being generated.

This feature is enabled by `importing' the non-existant symbol'verbose'. You would typically enable it by saying

    perl -MCarp=verbose script.pl

or by including the string MCarp=verbose in the the PERL5OPT manpageenvironment variable.

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