diff --git a/core/alien/alien-tests.factor b/core/alien/alien-tests.factor
index 9be2885888..5a880fa5a9 100755
--- a/core/alien/alien-tests.factor
+++ b/core/alien/alien-tests.factor
@@ -1,5 +1,5 @@
 IN: alien.tests
-USING: alien alien.accessors alien.syntax byte-arrays arrays
+USING: accessors alien alien.accessors alien.syntax byte-arrays arrays
 kernel kernel.private namespaces tools.test sequences libc math
 system prettyprint layouts ;
 
@@ -65,6 +65,10 @@ cell 8 = [
 
 [ f ] [ 0 B{ 1 2 3 } <displaced-alien> pinned-c-ptr? ] unit-test
 
+[ f ] [ 0 B{ 1 2 3 } <displaced-alien> 1 swap <displaced-alien> pinned-c-ptr? ] unit-test
+
+[ t ] [ 0 B{ 1 2 3 } <displaced-alien> 1 swap <displaced-alien> underlying>> byte-array? ] unit-test
+
 [ "( displaced alien )" ] [ 0 B{ 1 2 3 } <displaced-alien> unparse ] unit-test
 
 [ f ] [ DLL" fadfasdfsada" dll-valid? ] unit-test
diff --git a/extra/reports/optimizer/optimizer.factor b/extra/reports/optimizer/optimizer.factor
index 5016371052..ec3668b83b 100755
--- a/extra/reports/optimizer/optimizer.factor
+++ b/extra/reports/optimizer/optimizer.factor
@@ -2,20 +2,31 @@
 ! See http://factorcode.org/license.txt for BSD license.
 USING: accessors assocs words sequences arrays compiler
 tools.time io.styles io prettyprint vocabs kernel sorting
-generator optimizer math math.order ;
+generator optimizer math math.order math.statistics combinators ;
 IN: report.optimizer
 
 : count-optimization-passes ( nodes n -- n )
     >r optimize-1
     [ r> 1+ count-optimization-passes ] [ drop r> ] if ;
 
-: results
-    [ [ second ] prepose compare ] curry sort 20 tail*
-    print
+: table. ( alist -- )
+    20 short tail*
     standard-table-style
     [
         [ [ [ pprint-cell ] each ] with-row ] each
-    ] tabular-output ; inline
+    ] tabular-output ;
+
+: results ( results quot title -- )
+    print
+    [ second ] prepose
+    [ [ compare ] curry sort table. ]
+    [
+        map
+        [ "Mean: " write mean >float . ]
+        [ "Median: " write median >float . ]
+        [ "Standard deviation: " write std >float . ]
+        tri
+    ] 2bi ; inline
 
 : optimizer-measurements ( -- alist )
     all-words [ compiled>> ] filter
@@ -26,8 +37,10 @@ IN: report.optimizer
     ] { } map>assoc ;
 
 : optimizer-measurements. ( alist -- )
-    [ [ first ] "Worst number of optimizer passes:" results ]
-    [ [ second ] "Worst compile times:" results ] bi ;
+    {
+        [ [ first ] "Optimizer passes:" results ]
+        [ [ second ] "Compile times:" results ]
+    } cleave ;
 
 : optimizer-report ( -- )
     optimizer-measurements optimizer-measurements. ;
diff --git a/vm/alien.c b/vm/alien.c
index 7fdf9ccdb2..5b4ff3b832 100755
--- a/vm/alien.c
+++ b/vm/alien.c
@@ -62,7 +62,7 @@ CELL allot_alien(CELL delegate, CELL displacement)
 	{
 		F_ALIEN *delegate_alien = untag_object(delegate);
 		displacement += delegate_alien->displacement;
-		alien->alien = F;
+		alien->alien = delegate_alien->alien;
 	}
 	else
 		alien->alien = delegate;