src/share/vm/memory/filemap.cpp

*** 166,175 ****
--- 166,176 ----
  void FileMapInfo::FileMapHeader::populate(FileMapInfo* mapinfo, size_t alignment) {
    _magic = 0xf00baba2;
    _version = _current_version;
    _alignment = alignment;
    _obj_alignment = ObjectAlignmentInBytes;
+   _compact_strings = CompactStrings;
    _narrow_oop_mode = Universe::narrow_oop_mode();
    _narrow_oop_shift = Universe::narrow_oop_shift();
    _max_heap_size = MaxHeapSize;
    _narrow_klass_base = Universe::narrow_klass_base();
    _narrow_klass_shift = Universe::narrow_klass_shift();
*** 898,907 ****
--- 899,915 ----
      FileMapInfo::fail_continue("The shared archive file's ObjectAlignmentInBytes of %d"
                    " does not equal the current ObjectAlignmentInBytes of " INTX_FORMAT ".",
                    _obj_alignment, ObjectAlignmentInBytes);
      return false;
    }
+   if (_compact_strings != CompactStrings) {
+     FileMapInfo::fail_continue("The shared archive file's CompactStrings setting (%s)"
+                   " does not equal the current CompactStrings setting (%s).",
+                   _compact_strings ? "enabled" : "disabled",
+                   CompactStrings   ? "enabled" : "disabled");
+     return false;
+   }
  
    return true;
  }
  
  bool FileMapInfo::validate_header() {