Pass types as object, not name, in array conversion utility code.

This fixes #1737.

Cython/Compiler/PyrexTypes.py

@@ -2276,8 +2276,7 @@ class CArrayType(CPointerBaseType):
         if not self.base_type.create_to_py_utility_code(env):
             return False
 
-        base_type = self.base_type.declaration_code("", pyrex=1)
-        safe_typename = re.sub('[^a-zA-Z0-9]', '__', base_type)
+        safe_typename = self.base_type.specialization_name()
         to_py_function = "__Pyx_carray_to_py_%s" % safe_typename
         to_tuple_function = "__Pyx_carray_to_tuple_%s" % safe_typename
 
@@ -2285,7 +2284,7 @@ class CArrayType(CPointerBaseType):
         context = {
             'cname': to_py_function,
             'to_tuple_cname': to_tuple_function,
-            'base_type': base_type,
+            'base_type': self.base_type,
         }
         env.use_utility_code(CythonUtilityCode.load(
             "carray.to_py", "CConvert.pyx",
@@ -2315,14 +2314,12 @@ class CArrayType(CPointerBaseType):
         if not self.base_type.create_from_py_utility_code(env):
             return False
 
-        base_type = self.base_type.declaration_code("", pyrex=1)
-        safe_typename = re.sub('[^a-zA-Z0-9]', '__', base_type)
-        from_py_function = "__Pyx_carray_from_py_%s" % safe_typename
+        from_py_function = "__Pyx_carray_from_py_%s" % self.base_type.specialization_name()
 
         from .UtilityCode import CythonUtilityCode
         context = {
             'cname': from_py_function,
-            'base_type': base_type,
+            'base_type': self.base_type,
         }
         env.use_utility_code(CythonUtilityCode.load(
             "carray.from_py", "CConvert.pyx",

tests/run/carray_coercion.pyx

@@ -5,6 +5,10 @@ IS_PY3 = sys.version_info[0] >= 3
 IS_32BIT_PY2 = not IS_PY3 and sys.maxint < 2**32
 
 
+from libc cimport stdint
+from libc.stdint cimport int64_t as my_int64_t
+
+
 def unlongify(v):
     # on 32bit Py2.x platforms, 'unsigned int' coerces to a Python long => fix doctest output here.
     s = repr(v)
@@ -67,6 +71,30 @@ cpdef tuple tuple_from_typedef_int_array():
     return v
 
 
+def from_cimported_int_array():
+    """
+    >>> from_cimported_int_array()
+    [1, 2, 3]
+    """
+    cdef stdint.int32_t[3] v
+    v[0] = 1
+    v[1] = 2
+    v[2] = 3
+    return v
+
+
+def from_cimported_as_int_array():
+    """
+    >>> from_cimported_as_int_array()
+    [1, 2, 3]
+    """
+    cdef my_int64_t[3] v
+    v[0] = 1
+    v[1] = 2
+    v[2] = 3
+    return v
+
+
 def from_int_array_array():
     """
     >>> from_int_array_array()