Document known UNICOS/mk deficiency.

p4raw-id: //depot/perl@14842

diff --git a/pod/perldelta.pod b/pod/perldelta.pod
index a2923f8..74c1ce6 100644 (file)
--- a/pod/perldelta.pod
+++ b/pod/perldelta.pod
@@ -2570,6 +2570,12 @@ These tests fail because of yet unresolved floating point inaccuracies.
 
 =back
 
+=head2 UNICOS/mk
+
+The io/fs test #31 is failing because in UNICOS/mk truncate() cannot
+be used to grow the size of filehandles, only to reduce the size.
+The workaround is to truncate files instead of filehandles.
+
 =head2 UTS
 
 There are a few known test failures, see L<perluts>.