[perl #130478] multi doesn't work with 'is native'

[via RT]

# New Ticket Created by  Kaare Rasmussen 
# Please include the string:  [perl #130478]
# in the subject line of all future correspondence about this issue. 
# <URL: https://rt.perl.org/Ticket/Display.html?id=130478 >


This works

use NativeCall;

constant gid_t = uint32;
constant group = class :: is repr('CStruct') {
                      has Str         $.name;
                      has Str         $.password;
                      has gid_t       $.gid;
                      has CArray[Str] $.members;
};

sub getgrgid(int32) returns group is native { * }

my int32 $i = 1;
getgrgid($i);

This doesn't

use NativeCall;

constant gid_t = uint32;
constant group = class :: is repr('CStruct') {
                      has Str         $.name;
                      has Str         $.password;
                      has gid_t       $.gid;
                      has CArray[Str] $.members;
};

multi sub getgrgid(int32) returns group is native { * }
multi sub getgrgid(Int) { say 'Hi' }

my int32 $i = 1;
getgrgid($i);

Shouldn't it?