From @zoffixznet

Something's fishy going on with .splice. It feels like a multi without any candidates.

I vaguely recall a commit going in adding splice proto to Mu, so perhaps that's the cause.

The error gives uninitialized string warning and the "none of these signatures match" message prints no candidates.

zoffix@​leliana~$ perl6 -v
This is Rakudo version 2017.05-78-gdd2de36 built on MoarVM version 2017.05-24-gd86a35b
implementing Perl 6.c.
zoffix@​leliana~$ perl6 -e 'Blob.new.splice​: 42'
Use of uninitialized value of type Any in string context.
Methods .^name, .perl, .gist, or .say can be used to stringify it to something meaningful.
  in block <unit> at -e line 1
Cannot resolve caller splice(Blob, Int); none of these signatures match​:
  in block <unit> at -e line 1

zoffix@​leliana~$

From @zoffixznet

Seems .split has similar issue​:

<Zoffix__> m​: class {}.^lookup("split").candidates.say
<camelia> rakudo-moar 87d0e0​: OUTPUT​: «()␤»

<Zoffix__> m​: class {}.split
<camelia> rakudo-moar 87d0e0​: OUTPUT​: «Use of uninitialized value of type Any in string context.␤Methods .^name, .perl, .gist, or .say can be used to stringify it to something meaningful.␤ in block <unit> at <tmp> line 1␤Cannot resolve caller split(<anon|46787344>); none of these signa…»

From @zoffixznet

On Thu, 25 May 2017 09​:51​:53 -0700, cpan@​zoffix.com wrote​:

Something's fishy going on with .splice. It feels like a multi without
any candidates.

I vaguely recall a commit going in adding splice proto to Mu, so
perhaps that's the cause.

The error gives uninitialized string warning and the "none of these
signatures match" message prints no candidates.

zoffix@​leliana~$ perl6 -v
This is Rakudo version 2017.05-78-gdd2de36 built on MoarVM version
2017.05-24-gd86a35b
implementing Perl 6.c.
zoffix@​leliana~$ perl6 -e 'Blob.new.splice​: 42'
Use of uninitialized value of type Any in string context.
Methods .^name, .perl, .gist, or .say can be used to stringify it to
something meaningful.
in block <unit> at -e line 1
Cannot resolve caller splice(Blob, Int); none of these signatures
match​:
in block <unit> at -e line 1

zoffix@​leliana~$

Thank you for the report. jsimonet++ fixed the issue.

Fix​: rakudo/rakudo@02614f6477
Test​: rakudo/rakudo@b667e818c5

@zoffixznet - Status changed from 'new' to 'resolved'