id	summary	reporter	owner	description	type	status	milestone	component	version	severity	resolution	keywords	cc
7739	Divide by zero error in hash_map.hpp	Gaurav Gupta <g.gupta@…>	chris_kohlhoff	"In the code snippet, while doing '''calculate_hash_value(iter->first) % num_buckets_'''
If value of '''num_buckets_ is 0''', then it leads to Divide By zero error.

void rehash(std::size_t num_buckets)
  {
    if (num_buckets == num_buckets_)
      return;
    num_buckets_ = num_buckets;

    iterator end_iter = values_.end();

    ----- SOME CODE ------------

    // Put all values back into the hash.
    iterator iter = values_.begin();
    while (iter != end_iter)
    {
      '''std::size_t bucket = calculate_hash_value(iter->first) % num_buckets_;'''
      
if (buckets_[bucket].last == end_iter)
      {
        buckets_[bucket].first = buckets_[bucket].last = iter++;
      }
     ------- SOME CODE -----------

Attached patch is the fix for it. "	Bugs	closed	To Be Determined	asio	Boost 1.52.0	Problem	fixed		yogen.saini@…