$ echo "panic: Devel::DProf inconsistent subroutine return at /usr/local/share/perl/5.10.0/JSON.pm line 54." | splain
panic: Devel::DProf inconsistent subroutine return at
	/usr/local/share/perl/5.10.0/JSON.pm line 54 (#1)
    (P) Devel::DProf called a subroutine that exited using goto(LABEL),
    last(LABEL) or next(LABEL). Leaving that way a subroutine called from
    an XSUB will lead very probably to a crash of the interpreter. This is
    a bug that will hopefully one day get fixed.