1 files changed, 13 insertions, 0 deletions
diff --git a/lib/dumpvar.t b/lib/dumpvar.t
index 69ec3b2b1c..f4f55d9744 100644
--- a/lib/dumpvar.t
+++ b/lib/dumpvar.t
@@ -49,6 +49,11 @@ sub new { my $class = shift; bless [ @_ ], $class }
 
 use overload '""' => sub { "Bar<@{$_[0]}>" };
 
+package Tyre;
+
+sub TIESCALAR{bless[]}
+# other methods intentionally omitted
+
 package main;
 
 my $foo = Foo->new(1..5);
@@ -318,3 +323,11 @@ EXPECT
 dumpvalue(bless[1,2,3,4],"a=b=c");
 EXPECT
 /0  a=b=c=ARRAY\(0x[0-9a-f]+\)\n   0  1\n   1  2\n   2  3\n   3  4\n/i
+########
+local *_; tie $_, 'Tyre'; stringify('');
+EXPECT
+''
+########
+local *_; tie $_, 'Tyre'; unctrl('abc');
+EXPECT
+abc