--- a/hotspot/src/share/vm/gc/shared/space.hpp	Wed Apr 12 13:05:59 2017 +0200
+++ b/hotspot/src/share/vm/gc/shared/space.hpp	Wed Apr 12 17:53:18 2017 +0200
@@ -154,7 +154,7 @@
 
   // Test whether p is double-aligned
   static bool is_aligned(void* p) {
-    return ((intptr_t)p & (sizeof(double)-1)) == 0;
+    return is_ptr_aligned(p, sizeof(double));
   }
 
   // Size computations.  Sizes are in bytes.