From @masak

<masak> rakudo​: "".subst(/x/, "").trans()
<p6eval> rakudo 7ef386​: too few positional arguments​: 1 passed, 2 (or
more) expected [...]
<masak> is this one known?
<masak> it looks familiar.
<mathw> Hmm
<mathw> It does
<mathw> But that might be because we've had similar bugs in the past
<masak> it's the getting-Parrot-strings bug, I know.
<masak> but is this particular instance reported?
<mathw> I don't know
* masak submits rakudobug just to be safe
<mathw> :)

From @bbkr

On Kiev build​:

[16​:44] <bbkr> rakudo​: "".subst(/x/, "").trans()
[16​:45] <p6eval> rakudo 1576d4​: ( no output )

taking ticket for tests

The RT System itself - Status changed from 'new' to 'open'

From @felliott

Hello,

I believe this is fixed as of commit
4bf6c0f7bd4fe3be4df2f2f11a8d09147a172ad6

Cheers,
Fitz Elliott

From @bbkr

rechecked on * release
tests in t/spec/S05-transliteration/trans.t

@bbkr - Status changed from 'open' to 'resolved'

From @kyleha

This is an automatically generated mail to inform you that tests are now available in t/spec/S05-transliteration/trans.t

commit c960d472288a7e5a97408a102db3ac9e4e823439
Author​: bbkr <bbkr@​c213334d-75ef-0310-aa23-eaa082d1ae64>
Date​: Fri Jul 30 17​:28​:00 2010 +0000

  [t/spec] tests for RT #​71088 .trans after .subst blows up in Rakudo
 
  git-svn-id​: http://svn.pugscode.org/pugs@&#8203;31874 c213334d-75ef-0310-aa23-eaa082d1ae64

diff --git a/t/spec/S05-transliteration/trans.t b/t/spec/S05-transliteration/trans.t
index 2f96de4..816f3fb 100644
--- a/t/spec/S05-transliteration/trans.t
+++ b/t/spec/S05-transliteration/trans.t
@@ -10,7 +10,7 @@ String transliteration
 
 # L<S05/Transliteration>
 
-plan 52;
+plan 53;
 
 is("ABC".trans( ('A'=>'a'), ('B'=>'b'), ('C'=>'c') ),
     "abc",
@@ -235,4 +235,10 @@ is($_, "X  \t", 'tr/// on $_ with explicit character lists');
 # y/// is dead
 eval_dies_ok('$_ = "axbycz"; y/abc/def/', 'y/// does not exist any longer');
 
+# RT #71088
+{
+    lives_ok { "".subst(/x/, "").trans() },
+        'trans on subst output lives';
+}
+
 # vim: ft=perl6