Museum

Home

Lab Overview

Retrotechnology Articles

Online Manuals

⇒ Carp(3) — IRIX 6.5.3f

Media Vault

Software Library

Restoration Projects

Artifacts Sought



Carp(3)                                                                Carp(3)



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 because they act like
     die() or warn(), but report where the error was 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 confess and
     a carp as a cluck across all modules. In other words, force a detailed
     stack trace to be given.  This can be very helpful when trying to
     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 manpage
     environment variable.
















                                                                        Page 1



Typewritten Software • bear@typewritten.org • Edmonds, WA 98026