[perl #118407] Importing sub using require causes Null PMC access

[Christian Bartolomaeus via RT]

I can't reproduce the Null PMC access anymore:

$ cat 118407.pm6 
sub abc() is export { say "hello" }

$ perl6-p
> require("118407.pm6") "&abc"; abc();
Trying to import symbols &abc from '118407.pm6', but it does not export anything

> require("118407.pm6") "abc"; abc();
Trying to import symbols abc from '118407.pm6', but it does not export anything

Output for perl6-m and perl6-j is similar.