C:\test>type Existant.pm
package Existant;
fi( 'A' == 'B' ) { print 'hi' }
1;

C:\test>perl -le"use Existant; print 'Hi';"
syntax error at Existant.pm line 2, near ") {"
Compilation failed in require at -e line 1.
BEGIN failed--compilation aborted at -e line 1.