hash_map > push_back 错误！

[herman011]

struct seed_region
{
seed_region(const unsigned int a,const unsigned int b):
start(a),end(b){}

unsigned int start;
unsigned int end;
};

hash_map<unsigned int,vector<seed_region> > reads_unmapped;

reads_unmapped[2].push_back(seed_region(0,1)); 这句编译不通过：

671 D:\SRMAP\NC_003070\srmap0609.cpp no match for call to `(__gnu_cxx::hash_map<unsigned int, std::vector<seed_region, std::allocator<seed_region> >, __gnu_cxx::hash<unsigned int>, std::equal_to<unsigned int>, std::allocator<std::vector<seed_region, std::allocator<seed_region> > > >) (int, int)'




之前我有个类似的都可以啊：
struct reads_seed
{
reads_seed(const unsigned int i,const unsigned char o,const bool s) :
id(i),offset(o),strand(s){}

unsigned int id;
unsigned offset :7;
unsigned strand :1;
};

hash_map<unsigned int,vector<reads_seed> > reads_hash；

reads_hash[5].push_back(reads_seed(1,3,true));

[wsqshz]

一切正常

[visame]

//未见明显错误
struct eqstr
{
  bool operator()(const char* s1, const char* s2) const
  {
    return strcmp(s1, s2) == 0;
  }
};

int main()
{
  hash_map<const char*, int, hash<const char*>, eqstr> months;
  
  months["january"] = 31;
  months["february"] = 28;
  months["march"] = 31;
  months["april"] = 30;
  months["may"] = 31;
  months["june"] = 30;
  months["july"] = 31;
  months["august"] = 31;
  months["september"] = 30;
  months["october"] = 31;
  months["november"] = 30;
  months["december"] = 31;
  
  cout << "september -> " << months["september"] << endl;
  cout << "april     -> " << months["april"] << endl;
  cout << "june      -> " << months["june"] << endl;
  cout << "november  -> " << months["november"] << endl;
}