[perl #88748] [BUG] Rakudo doesn't give a good indication of what's happened when an undeclared type is used in a 'when' clause

[Carl Mäsak]

# New Ticket Created by  "Carl Mäsak" 
# Please include the string:  [perl #88748]
# in the subject line of all future correspondence about this issue. 
# <URL: http://rt.perl.org/rt3/Ticket/Display.html?id=88748 >


<masak> rakudo: given 42 { when SomeUndeclaredType { say "OH HAI" };
default { say "OH NOES" } }
<p6eval> rakudo 5ac05e: OUTPUT«===SORRY!===␤Missing block at line 22,
near "; default "␤»
<masak> std: given 42 { when SomeUndeclaredType { say "OH HAI" };
default { say "OH NOES" } }
<p6eval> std 4608239: OUTPUT«===SORRY!===␤Function
'SomeUndeclaredType' needs parens to avoid gobbling block at
/tmp/ggW4TXS4y1 line 1:␤------> given 42 { when
SomeUndeclaredType⏏ { say "OH HAI" }; default { say "OH
NOE␤Missing block (apparently gobbled by 'SomeUndeclaredType'…
<masak> I like STD's error messages much better here.
* masak submits rakudobug