[perl #111986] &fail always stringifies its arguments

# New Ticket Created by  Moritz Lenz 
# Please include the string:  [perl #111986]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org:443/rt3/Ticket/Display.html?id=111986 >


22:29 < moritz> nom: class A is Exception { }; my $x = fail A.new; say
                $x.exception.WHAT
22:29 <+p6eval> rakudo a4c78f: OUTPUT«X::AdHoc()␤»

Should be A(), not X::AdHoc. That's because somewhere along the way,
fail() stringifies its arguments, and then the exception is wrapped in
X::AdHoc, because the stringified thing isn't of type Exception anymore.

Note that with "use fatal" in effect, it works as designed:

22:32 < moritz> nom: class A is Exception { }; use fatal; try fail
A.new; say $!.WHAT
22:32 <+p6eval> rakudo 008dd4: OUTPUT«A()␤»

• [perl #111986] &fail always stringifies its arguments by Moritz Lenz