Help on template compiling

[LDdA]

Hello

I'd like to know why there's a syntax error in my code:

#include <string.h>
#include <hash_map.h>
//#include <queue.h>
#include &quot;../LoadingSystem/Loader.hpp&quot;
#include &quot;Cache.hpp&quot;

using namespace loader;

namespace CacheSystem{
template<class T, class K, class Loader>
class CacheFifoublic CacheSystem::Cache<T, K, Loader> {
private:
...
hash_map<const K, T, hash<const K> > _image_set;
---> queue<const K*> _freeable;<--- Line 47

bool addImageObject(const K &key, const Image &#8465
{...}
...};
};//namespace

I really don't understand why the compiler tells me this:
CacheSystem/CacheFifo.hpp:47: syntax error before `;'

And when I uncomment #include <queue.h>, it doesn't find queue.h.

I hate asking this kind of help in forums, but I'm with this error for a couple of hours. The &quot;...&quot; are either comments, either code that was in comment and that has no real incidence on compiling.

thank you

LDdA