src/hotspot/share/gc/parallel/parMarkBitMap.cpp

@@ -88,11 +88,11 @@
   if (_beg_bits.par_set_bit(beg_bit)) {
     const idx_t end_bit = addr_to_bit(addr + size - 1);
     bool end_bit_ok = _end_bits.par_set_bit(end_bit);
     assert(end_bit_ok, "concurrency problem");
     DEBUG_ONLY(Atomic::inc(&mark_bitmap_count));
-    DEBUG_ONLY(Atomic::add(size, &mark_bitmap_size));
+    DEBUG_ONLY(Atomic::add(&mark_bitmap_size, size));
     return true;
   }
   return false;
 }