Debugging

Pdb basics

• s - single step

• n - next instruction

• <enter> - repeat previous command

• c (<line>) - continue (to line)

• p $var - print

• b - set breakpoint

• b <condition e.g. $var eq “foo”> - conditional breakpoint

• L - list all breakpoints

• B <line|*> - delete breakpoint

Run pdb in emacs

• esc+x perldb

Enable debugger at runtime

• cpan Enbugger

require Enbugger;
Enbugger->stop;

REPL on fatal errors

• cpan Carp::REPL