src/share/vm/utilities/bitMap.inline.hpp

rev 8928 : 8211926: Catastrophic size_t underflow in BitMap::*_large methods
Reviewed-by: kbarrett, stuefe

*** 319,332 ****
--- 319,334 ----
    }
    return mask;
  }
  
  inline void BitMap::set_large_range_of_words(idx_t beg, idx_t end) {
+   assert(beg <= end, "underflow");
    memset(_map + beg, ~(unsigned char)0, (end - beg) * sizeof(uintptr_t));
  }
  
  inline void BitMap::clear_large_range_of_words(idx_t beg, idx_t end) {
+   assert(beg <= end, "underflow");
    memset(_map + beg, 0, (end - beg) * sizeof(uintptr_t));
  }
  
  inline BitMap::idx_t BitMap::word_index_round_up(idx_t bit) const {
    idx_t bit_rounded_up = bit + (BitsPerWord - 1);