shared_ptr now autodetects counted_bases; minor test updates; intrusive_ptr no longer calls addref/release for NULL pointers.

[SVN r13602]

include/boost/detail/shared_count.hpp

@@ -169,12 +169,12 @@ private:
 
 inline void intrusive_ptr_add_ref(counted_base * p)
 {
-    if(p != 0) p->add_ref();
+    p->add_ref();
 }
 
 inline void intrusive_ptr_release(counted_base * p)
 {
-    if(p != 0) p->release();
+    p->release();
 }
 
 namespace detail
@@ -215,6 +215,8 @@ private:
 
     friend class weak_count;
 
+    template<class P, class D> shared_count(P, D, counted_base const *);
+
 public:
 
     shared_count(): pi_(new counted_base(1, 1))
@@ -226,7 +228,7 @@ public:
         pi_->add_ref();
     }
 
-    template<class P, class D> shared_count(P p, D d): pi_(0)
+    template<class P, class D> shared_count(P p, D d, void const * = 0): pi_(0)
     {
         try
         {
@@ -239,6 +241,11 @@ public:
         }
     }
 
+    template<class P, class D> shared_count(P, D, counted_base * pi): pi_(pi)
+    {
+        pi_->add_ref();
+    }
+
 #ifndef BOOST_NO_AUTO_PTR
 
     // auto_ptr<Y> is special cased to provide the strong guarantee

include/boost/intrusive_ptr.hpp

@@ -33,7 +33,8 @@ namespace boost
 //  
 //      void intrusive_ptr_add_ref(T * p);
 //      void intrusive_ptr_release(T * p);
-//          (note: p may be 0!)
+//
+//          (p != 0)
 //
 //  The object is responsible for destroying itself.
 //
@@ -52,26 +53,26 @@ public:
 
     intrusive_ptr(T * p): p_(p)
     {
-        intrusive_ptr_add_ref(p_);
+        if(p_ != 0) intrusive_ptr_add_ref(p_);
     }
 
     ~intrusive_ptr()
     {
-        intrusive_ptr_release(p_);
+        if(p_ != 0) intrusive_ptr_release(p_);
     }
 
 #ifdef BOOST_MSVC6_MEMBER_TEMPLATES
 
     template<class U> intrusive_ptr(intrusive_ptr<U> const & rhs): p_(rhs.get())
     {
-        intrusive_ptr_add_ref(p_);
+        if(p_ != 0) intrusive_ptr_add_ref(p_);
     }
 
 #endif
 
     intrusive_ptr(intrusive_ptr const & rhs): p_(rhs.p_)
     {
-        intrusive_ptr_add_ref(p_);
+        if(p_ != 0) intrusive_ptr_add_ref(p_);
     }
 
 #ifdef BOOST_MSVC6_MEMBER_TEMPLATES

include/boost/shared_ptr.hpp

@@ -87,7 +87,7 @@ public:
     }
 
     template<typename Y>
-    explicit shared_ptr(Y * p): px(p), pn(p, checked_deleter<Y>()) // Y must be complete
+    explicit shared_ptr(Y * p): px(p), pn(p, checked_deleter<Y>(), p) // Y must be complete
     {
     }