D:\TEMP>perl -e"sub f{'fred'} goto +f" Can't find label SCALAR(0x15d7c1c) at -e line 1. D:\TEMP>perl -e"sub f{'fred'} goto(f)" Can't find label SCALAR(0x15d7c1c) at -e line 1. D:\TEMP>perl -e"sub f{'fred'} goto f->()" Can't find label SCALAR(0x15d7c1c) at -e line 1. #### D:\TEMP>perl -e"sub f{'fred'} goto ~~f" Can't find label fred at -e line 1. D:\TEMP>perl -e"sub f{'fred'} goto ''.f" Can't find label fred at -e line 1. D:\TEMP>perl -e"sub f{'fred'} goto scalar f" Can't find label fred at -e line 1. D:\TEMP>perl -e"sub f{'fred'} goto ${\f}" Can't find label fred at -e line 1.