src/share/vm/memory/universe.cpp

*** 870,879 ****
--- 870,882 ----
  }
  
  
  // Reserve the Java heap, which is now the same for all GCs.
  ReservedSpace Universe::reserve_heap(size_t heap_size, size_t alignment) {
+   assert(alignment <= Arguments::conservative_max_heap_alignment(),
+       err_msg("actual alignment "SIZE_FORMAT" must be within maximum heap alignment "SIZE_FORMAT,
+           alignment, Arguments::conservative_max_heap_alignment()));
    size_t total_reserved = align_size_up(heap_size, alignment);
    assert(!UseCompressedOops || (total_reserved <= (OopEncodingHeapMax - os::vm_page_size())),
        "heap size is too big for compressed oops");
  
    bool use_large_pages = UseLargePages && is_size_aligned(alignment, os::large_page_size());