perldelta for Time::HiRes 1.9779 (sleep prototype)

Author: mauke

pod/perldelta.pod

@@ -125,9 +125,21 @@ XXX Remove this section if F<Porting/corelist-perldelta.pl> did not add any cont
 
 =item *
 
-L<XXX> has been upgraded from version A.xx to B.yy.
+L<Time::HiRes> has been upgraded from version 1.9778 to 1.9779.
 
-XXX If there was something important to note about this change, include that here.
+The subsecond-resolution C<sleep> function provided by L<Time::HiRes> now has
+the same prototype as perl's built-in L<sleep function|perlfunc/sleep>. This
+means it now requires a scalar argument, not a list, just like C<CORE::sleep>:
+
+    use Time::HiRes qw(sleep);
+
+    sleep(1, "foo", "bar");  # Syntax error.
+    # It used to silently ignore the extra arguments.
+
+    my @t = 42;
+    sleep @t;
+    # Evaluates @t in scalar context (giving the number of elements)
+    # and sleeps for one second. It used to sleep for 42 seconds.
 
 =back