Fix C++ template fused type specialization

Cython/Compiler/Nodes.py

@@ -439,6 +439,10 @@ class CNameDeclaratorNode(CDeclaratorNode):
             else:
                 self.name = base_type.declaration_code("", for_display=1, pyrex=1)
                 base_type = py_object_type
+
+        if base_type.is_fused and env.fused_to_specific:
+            base_type = base_type.specialize(env.fused_to_specific)
+
         self.type = base_type
         return self, base_type
 
@@ -963,8 +967,6 @@ class TemplatedTypeNode(CBaseTypeNode):
                                  for name, value in options.items() ])
 
             self.type = PyrexTypes.BufferType(base_type, **options)
-            if self.type.is_fused and env.fused_to_specific:
-                self.type = self.type.specialize(env.fused_to_specific)
 
         else:
             # Array
@@ -984,6 +986,9 @@ class TemplatedTypeNode(CBaseTypeNode):
                     dimension = dimension)
                 self.type = self.array_declarator.analyse(base_type, env)[1]
 
+        if self.type.is_fused and env.fused_to_specific:
+            self.type = self.type.specialize(env.fused_to_specific)
+
         return self.type
 
 class CComplexBaseTypeNode(CBaseTypeNode):

tests/run/fused_cpp.pyx

+# tag: cpp
+
+cimport cython
+from libcpp.vector cimport vector
+
+def test_cpp_specialization(cython.floating element):
+    """
+    >>> import cython
+    >>> test_cpp_specialization[cython.float](10.0)
+    vector<float> * float 10.0
+    >>> test_cpp_specialization[cython.double](10.0)
+    vector<double> * double 10.0
+    """
+    cdef vector[cython.floating] *v = new vector[cython.floating]()
+    v.push_back(element)
+    print cython.typeof(v), cython.typeof(element), v.at(0)
\ No newline at end of file

tests/run/fused_types.pyx

@@ -272,17 +272,3 @@ def test_fused_memslice_dtype(cython.floating[:] array):
     cdef cython.floating[:] otherarray = array[0:100:1]
     print cython.typeof(array), cython.typeof(otherarray), \
           array[5], otherarray[6]
-
-# FIXME: broken
-#from libcpp.vector cimport vector
-#def test_cpp_specialization(cython.floating element):
-#    """
-#    >>> import cython
-#    >>> test_cpp_specialization[cython.float](10.0)
-#    vector<float> * float 10.0
-#    >>> test_cpp_specialization[cython.double](10.0)
-#    vector<double> * double 10.0
-#    """
-#    cdef vector[cython.floating] *v = new vector[cython.floating]()
-#    v.push_back(element)
-#    print cython.typeof(v), cython.typeof(element), v.at(0)