Resolve RT #70569: Prototype mismatch: sub Mouse::Util::get_linear_isa($;$) vs none...

diff --git a/lib/Mouse/Util.pm b/lib/Mouse/Util.pm
index fc2292a..ee422b7 100644 (file)
--- a/lib/Mouse/Util.pm
+++ b/lib/Mouse/Util.pm
@@ -80,7 +80,8 @@ BEGIN{
 
     # definition of mro::get_linear_isa()
     my $get_linear_isa;
-    if (eval { require mro }) {
+    if ($] >= 5.010_000) {
+        require mro;
         $get_linear_isa = \&mro::get_linear_isa;
     }
     else {