# --- introduced 'die' before module's end
D:\>perl -MData::Dumper -e0
test at C:/Strawberry/perl/lib/Data/Dumper.pm line 852.
Compilation failed in require.
BEGIN failed--compilation aborted.

# --- changed final 1 to 0 
D:\>perl -MData::Dumper -e0
Data/Dumper.pm did not return a true value.
BEGIN failed--compilation aborted.

# --- undid all changes
D:\>perl -MData::Dumper -e0

D:\>