[perl #131696] [LTA] internal error for invalid native type in "is native"

[Jan-Olof Hendig via RT]

On Mon, 03 Jul 2017 14:16:58 -0700, allber...@gmail.com wrote:
> [03 21:03:27] <Skarsnik> m: use NativeCall; sub foo(num $a) is
> native("foo") { * };
> [03 21:03:27] <camelia> rakudo-moar a7b230: OUTPUT: «===SORRY!=== Error
> while compiling <tmp>␤
> [03 21:03:27]  Cannot resolve caller infix:<==>(NQPMu, Int); none of these
> signatures match:␤
> [03 21:03:27]      ($?)␤
> [03 21:03:27]      (\a, \b)␤
> [03 21:03:27]      (Real \a, Real \b)␤
> [03 21:03:27]      (Int:D \a, Int:D \b)␤
> [03 21:03:27]      (int $a, int $b)␤
> [03 21:03:27]      (Num:D \a, Num:D \b …»
> [03 21:06:25] <geekosaur> now I think we have an LTA...
> [03 21:06:52] <geekosaur> m: use NativeCall; sub foo(num32 $a) is
> native("foo") { * };
> [03 21:06:53] <camelia> rakudo-moar a7b230: ( no output )
> [03 21:06:59] <geekosaur> LTA for a bad native type
> 

Testing with 
~ $ perl6 -v
This is Rakudo version 2018.02.1-164-g57af8b847 built on MoarVM version 
2018.02-171-geee5be412
implementing Perl 6.c.

the result looks quite a bit better:

~ $ perl6 -e 'use NativeCall; sub foo(num $a) is native("foo") { * }'
Potential difficulties:
    In 'foo' routine declaration - Not an accepted NativeCall type for 
parameter [1] $a : num
     --> For Numerical type, use the appropriate int32/int64/num64...
    at -e:1
    ------> use NativeCall; sub foo(num $a) ⏏is native("foo") { * }