Assignment to an undeclared dynamic variable fails now with a typed exception "X::Dynamic::NotFound" and an adequate error message:
$ perl6 -e '$*x = 42' Dynamic variable $*x not found in method <anon> at src/gen/m-CORE.setting:14595 in any find_method_fallback at src/gen/m-Metamodel.nqp:2741 in any find_method at src/gen/m-Metamodel.nqp:988 in block <unit> at -e:1 There is a (passing) test in S32-exceptions/misc.t -- added with commit https://github.com/perl6/roast/commit/5cea4946ce I'm closing this ticket now.
