Fix error for .native-descriptor on closed handle

Addresses issue #1699.
rakudo · Apr 7, 2018 · 5d554ba · 5d554ba
1 parent 1f98b1b
commit 5d554ba
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/src/core/IO/Handle.pm6 b/src/core/IO/Handle.pm6
@@ -798,6 +798,7 @@ my class IO::Handle {
     }
 
     method native-descriptor(IO::Handle:D:) {
+        nqp::defined($!PIO) or die 'File handle not open, so cannot get native descriptor';
         nqp::filenofh($!PIO)
     }
 }