[perl #131611] [BUG] Foo() coercers choke on sigiless variables

[jn...@jnthn.net via RT]

On Tue, 20 Jun 2017 11:11:15 -0700, c...@zoffix.com wrote:
>     m: my \a = -42; Int(a)
>     rakudo-moar 640404: OUTPUT: «===SORRY!===␤No compile-time value for a␤»

Fixed and tested in S12-coercion/coercion-types.t.