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-rw-r--r--lib/utf8.t12
1 files changed, 11 insertions, 1 deletions
diff --git a/lib/utf8.t b/lib/utf8.t
index 90035e56b3..334a476c25 100644
--- a/lib/utf8.t
+++ b/lib/utf8.t
@@ -37,7 +37,7 @@ no utf8; # Ironic, no?
#
#
-plan tests => 144;
+plan tests => 145;
{
# bug id 20001009.001
@@ -415,3 +415,13 @@ SKIP: {
like($@, qr/^Modification of a read-only value attempted/,
"utf8::encode should refuse to touch read-only values");
}
+
+{
+ my $a =3D "456\xb6";
+ utf8::upgrade($a);
+
+ my $b =3D "123456\xb6";
+ $b =3D~ s/^...//;
+ utf8::upgrade($b);
+ is($b, $a, "utf8::upgrade OffsetOK");
+}