------- Comment #3 from yuanfei8077 at gmail dot com 2006-09-29 03:02 -------
Plesae seee Comment #2 From Kelvin 2006-09-28 23:25 [reply].
In addition 2 questions I raised in the Commet2. I also have one more question
about the rule "bind an rvalue to a reference,
we need to let copy ctor of the class be accessible.", I found that this rule
only effective when the reference is delcared as "const &", but if we remove
keyword "const", then "no matching" happen again.
using std::cout;
using std::endl;
class MemPool {
public:
MemPool(){};
protected:
MemPool(const MemPool& mempool);
};
template <class Type> class MemAllocator{
public:
MemAllocator(MemPool& pool):m_pool(pool){}
MemPool& get_pool() const {
return m_pool;
}
template<class OtherType>
MemAllocator<Type>& operator=(const MemAllocator<OtherType>& rhs){
m_pool = rhs.get_pool();
return *this;
}
MemAllocator& operator=(const MemAllocator& rhs){
m_pool = rhs.get_pool();
return *this;
}
MemAllocator(const MemAllocator& other)
: m_pool(other.m_pool) {}
template<class OtherType>
MemAllocator(const MemAllocator<OtherType>& other)
: m_pool(other.get_pool()) {}
private:
MemAllocator();
// MemAllocator(const MemAllocator&);
MemPool &m_pool;
};
template <class _AllocType> class tdat_hash_map {
public:
typedef _AllocType _Alloc;
static void func(const _Alloc&) {};
tdat_hash_map(const _Alloc&); // there will be error if const is removed
_Alloc malloc;
private:
tdat_hash_map();
};
class CacheManager {
public:
typedef tdat_hash_map<MemAllocator<int> > Map;
Map caches;
MemPool pool;
CacheManager():caches(MemAllocator<int>(pool)){};
};
--
yuanfei8077 at gmail dot com changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|RESOLVED |UNCONFIRMED
Resolution|INVALID |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29266
