src/share/vm/gc_implementation/shared/vmGCOperations.hpp

rev 7780 : imported patch 8072621
rev 7781 : imported patch 8066771
rev 7782 : [mq]: review

@@ -166,11 +166,12 @@
  protected:
   size_t    _word_size; // Size of object to be allocated (in number of words)
   HeapWord* _result;    // Allocation result (NULL if allocation failed)
 
  public:
-  VM_CollectForAllocation(size_t word_size, uint gc_count_before, GCCause::Cause cause);
+  VM_CollectForAllocation(size_t word_size, uint gc_count_before, GCCause::Cause cause)
+    : VM_GC_Operation(gc_count_before, cause), _result(NULL), _word_size(word_size) {}
 
   HeapWord* result() const {
     return _result;
   }
 };

@@ -181,11 +182,13 @@
  public:
   VM_GenCollectForAllocation(size_t word_size,
                              bool tlab,
                              uint gc_count_before)
     : VM_CollectForAllocation(word_size, gc_count_before, GCCause::_allocation_failure),
-      _tlab(tlab) {}
+      _tlab(tlab) {
+    assert(word_size != 0, "An allocation should always be requested with this operation.");
+  }
   ~VM_GenCollectForAllocation()  {}
   virtual VMOp_Type type() const { return VMOp_GenCollectForAllocation; }
   virtual void doit();
 };