Re: Can't coerce UNKNOWN to string in substitution iterator

[choroba]

I can confirm the behaviour in 5.18.2 and 5.20.1, but running the code in blead (720c8c4f57a8be0960c9068d899e9d111e143382) finishes the code without error.

Check also splain for the message:

Can't coerce UNKNOWN to string in substitution iterator at - line 11, 
+<> line 12 (#1)
    (F) Certain types of SVs, in particular real symbol table entries
    (typeglobs), can't be forced to stop being what they are.  So you 
+can't
    say things like:
    
        *foo += 1;
    
    You CAN say
    
        $foo = *foo;
        $foo += 1;
    
    but then $foo no longer contains a glob.