diff -r c25572739e7c -r f6641fcf7b7e src/hotspot/share/opto/block.hpp
--- a/src/hotspot/share/opto/block.hpp	Wed Aug 08 15:31:06 2018 +0200
+++ b/src/hotspot/share/opto/block.hpp	Wed Aug 08 15:31:06 2018 +0200
@@ -55,7 +55,7 @@
   void grow( uint i );          // Grow array node to fit
 
 public:
-  Block_Array(Arena *a) : _arena(a), _size(OptoBlockListSize) {
+  Block_Array(Arena *a) : _size(OptoBlockListSize), _arena(a) {
     debug_only(_limit=0);
     _blocks = NEW_ARENA_ARRAY( a, Block *, OptoBlockListSize );
     for( int i = 0; i < OptoBlockListSize; i++ ) {
@@ -752,7 +752,7 @@
 
   CFGEdge(Block *from, Block *to, double freq, int from_pct, int to_pct) :
     _from(from), _to(to), _freq(freq),
-    _from_pct(from_pct), _to_pct(to_pct), _state(open) {
+    _state(open), _from_pct(from_pct), _to_pct(to_pct) {
     _infrequent = from_infrequent() || to_infrequent();
   }
 
@@ -800,11 +800,11 @@
  public:
 
   Trace(Block *b, Block **next_list, Block **prev_list) :
-    _first(b),
-    _last(b),
+    _id(b->_pre_order),
     _next_list(next_list),
     _prev_list(prev_list),
-    _id(b->_pre_order) {
+    _first(b),
+    _last(b) {
     set_next(b, NULL);
     set_prev(b, NULL);
   };