unsigned long hash(unsigned char *str) {
  unsigned long hash = 5381;
  int c;
  while (c = *str++)
    hash = ((hash << 5) + hash) + c; /* hash * 33 + c */
  return hash;
}

uint32_t HashBuffer(const uint8_t* buffer, size_t nbytes)
{
	assert(buffer != NULL);
	assert(nbytes > 0);
	
	uint32_t hash = 0x811C9DC5; // 2166136261;
	
	for (size_t i = 0; i < nbytes; ++i)
	{
		hash ^= buffer[i];
		hash *= 16777619;
	}
	
	return hash & 0x0fffffff;
}

~> cat t.cc
#include <map>

struct s {
    bool member = false;
};

std::map<int, s> my_map{
    { 1, { false } },
    { 2, { true } }
};

int main()
{
    return 0;
}
~> g++ -std=c++11 t.cc
t.cc:10:1: error: no matching function for call to &#8216;std::map<int, s>::map(<brace-enclosed initializer list>)&#8217;
 };
 ^
t.cc:10:1: note: candidates are:
In file included from /usr/include/c++/4.9.1/map:61:0,
                 from t.cc:1:
/usr/include/c++/4.9.1/bits/stl_map.h:270:9: note: template<class _InputIterator> std::map<_Key, _Tp, _Compare, _Alloc>::map(_InputIterator, _InputIterator, const _Compare&, const allocator_type&)
         map(_InputIterator __first, _InputIterator __last,
         ^
/usr/include/c++/4.9.1/bits/stl_map.h:270:9: note:   template argument deduction/substitution failed:
t.cc:10:1: note:   candidate expects 4 arguments, 2 provided
 };
 ^
In file included from /usr/include/c++/4.9.1/map:61:0,
                 from t.cc:1:
/usr/include/c++/4.9.1/bits/stl_map.h:253:9: note: template<class _InputIterator> std::map<_Key, _Tp, _Compare, _Alloc>::map(_InputIterator, _InputIterator)
         map(_InputIterator __first, _InputIterator __last)
         ^
/usr/include/c++/4.9.1/bits/stl_map.h:253:9: note:   template argument deduction/substitution failed:
t.cc:10:1: note:   couldn't deduce template parameter &#8216;_InputIterator&#8217;
 };
 ^
In file included from /usr/include/c++/4.9.1/map:61:0,
                 from t.cc:1:
/usr/include/c++/4.9.1/bits/stl_map.h:236:9: note: template<class _InputIterator> std::map<_Key, _Tp, _Compare, _Alloc>::map(_InputIterator, _InputIterator, const allocator_type&)
         map(_InputIterator __first, _InputIterator __last,
         ^
/usr/include/c++/4.9.1/bits/stl_map.h:236:9: note:   template argument deduction/substitution failed:
t.cc:10:1: note:   candidate expects 3 arguments, 2 provided
 };
 ^
In file included from /usr/include/c++/4.9.1/map:61:0,
                 from t.cc:1:
/usr/include/c++/4.9.1/bits/stl_map.h:230:7: note: std::map<_Key, _Tp, _Compare, _Alloc>::map(std::initializer_list<std::pair<const _Key, _Tp> >, const allocator_type&) [with _Key = int; _Tp = s; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, s> >; std::map<_Key, _Tp, _Compare, _Alloc>::allocator_type = std::allocator<std::pair<const int, s> >]
       map(initializer_list<value_type> __l, const allocator_type& __a)
       ^
/usr/include/c++/4.9.1/bits/stl_map.h:230:7: note:   no known conversion for argument 1 from &#8216;<brace-enclosed initializer list>&#8217; to &#8216;std::initializer_list<std::pair<const int, s> >&#8217;
/usr/include/c++/4.9.1/bits/stl_map.h:224:7: note: std::map<_Key, _Tp, _Compare, _Alloc>::map(std::map<_Key, _Tp, _Compare, _Alloc>&&, const allocator_type&) [with _Key = int; _Tp = s; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, s> >; std::map<_Key, _Tp, _Compare, _Alloc>::allocator_type = std::allocator<std::pair<const int, s> >]
       map(map&& __m, const allocator_type& __a)
       ^
/usr/include/c++/4.9.1/bits/stl_map.h:224:7: note:   no known conversion for argument 2 from &#8216;<brace-enclosed initializer list>&#8217; to &#8216;const allocator_type& {aka const std::allocator<std::pair<const int, s> >&}&#8217;
/usr/include/c++/4.9.1/bits/stl_map.h:220:7: note: std::map<_Key, _Tp, _Compare, _Alloc>::map(const std::map<_Key, _Tp, _Compare, _Alloc>&, const allocator_type&) [with _Key = int; _Tp = s; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, s> >; std::map<_Key, _Tp, _Compare, _Alloc>::allocator_type = std::allocator<std::pair<const int, s> >]
       map(const map& __m, const allocator_type& __a)
       ^
/usr/include/c++/4.9.1/bits/stl_map.h:220:7: note:   no known conversion for argument 2 from &#8216;<brace-enclosed initializer list>&#8217; to &#8216;const allocator_type& {aka const std::allocator<std::pair<const int, s> >&}&#8217;
/usr/include/c++/4.9.1/bits/stl_map.h:216:7: note: std::map<_Key, _Tp, _Compare, _Alloc>::map(const allocator_type&) [with _Key = int; _Tp = s; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, s> >; std::map<_Key, _Tp, _Compare, _Alloc>::allocator_type = std::allocator<std::pair<const int, s> >]
       map(const allocator_type& __a)
       ^
/usr/include/c++/4.9.1/bits/stl_map.h:216:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/4.9.1/bits/stl_map.h:208:7: note: std::map<_Key, _Tp, _Compare, _Alloc>::map(std::initializer_list<std::pair<const _Key, _Tp> >, const _Compare&, const allocator_type&) [with _Key = int; _Tp = s; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, s> >; std::map<_Key, _Tp, _Compare, _Alloc>::allocator_type = std::allocator<std::pair<const int, s> >]
       map(initializer_list<value_type> __l,
       ^
/usr/include/c++/4.9.1/bits/stl_map.h:208:7: note:   no known conversion for argument 1 from &#8216;<brace-enclosed initializer list>&#8217; to &#8216;std::initializer_list<std::pair<const int, s> >&#8217;
/usr/include/c++/4.9.1/bits/stl_map.h:193:7: note: std::map<_Key, _Tp, _Compare, _Alloc>::map(std::map<_Key, _Tp, _Compare, _Alloc>&&) [with _Key = int; _Tp = s; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, s> >]
       map(map&& __x)
       ^
/usr/include/c++/4.9.1/bits/stl_map.h:193:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/4.9.1/bits/stl_map.h:182:7: note: std::map<_Key, _Tp, _Compare, _Alloc>::map(const std::map<_Key, _Tp, _Compare, _Alloc>&) [with _Key = int; _Tp = s; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, s> >]
       map(const map& __x)
       ^
/usr/include/c++/4.9.1/bits/stl_map.h:182:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/4.9.1/bits/stl_map.h:171:7: note: std::map<_Key, _Tp, _Compare, _Alloc>::map(const _Compare&, const allocator_type&) [with _Key = int; _Tp = s; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, s> >; std::map<_Key, _Tp, _Compare, _Alloc>::allocator_type = std::allocator<std::pair<const int, s> >]
       map(const _Compare& __comp,
       ^
/usr/include/c++/4.9.1/bits/stl_map.h:171:7: note:   no known conversion for argument 1 from &#8216;<brace-enclosed initializer list>&#8217; to &#8216;const std::less<int>&&#8217;
/usr/include/c++/4.9.1/bits/stl_map.h:162:7: note: std::map<_Key, _Tp, _Compare, _Alloc>::map() [with _Key = int; _Tp = s; _Compare = std::less<int>; _Alloc = std::allocator<std::pair<const int, s> >]
       map()
       ^
/usr/include/c++/4.9.1/bits/stl_map.h:162:7: note:   candidate expects 0 arguments, 2 provided

~> cat t.cc
#include <map>

struct s {
    bool member;
};

std::map<int, s> my_map{
    { 1, { false } },
    { 2, { true } }
};

int main()
{
    return 0;
}
~> g++ -std=c++11 t.cc
~>