cast invalid pointer initialisation values also for OpenMP temps and not just normal variables

Closes #1664

Cython/Compiler/Nodes.py

@@ -8076,7 +8076,7 @@ class ParallelStatNode(StatNode, ParallelNode):
 
             invalid_value = entry.type.invalid_value()
             if invalid_value:
-                init = ' = ' + invalid_value
+                init = ' = ' + entry.type.cast_code(invalid_value)
             else:
                 init = ''
             # Declare the parallel private in the outer block

tests/run/sequential_parallel.pyx

@@ -2,6 +2,7 @@
 
 cimport cython.parallel
 from cython.parallel import prange, threadid
+from cython.view cimport array
 from libc.stdlib cimport malloc, calloc, free, abort
 from libc.stdio cimport puts
 
@@ -737,3 +738,19 @@ def test_clean_temps():
     except Exception, e:
         print e.args[0]
 
+
+def test_pointer_temps(double x):
+    """
+    >>> test_pointer_temps(1.0)
+    4.0
+    """
+    cdef Py_ssize_t i
+    cdef double* f
+    cdef double[:] arr = array(format="d", shape=(10,), itemsize=sizeof(double))
+    arr[0] = 4.0
+    arr[1] = 3.0
+
+    for i in prange(10, nogil=True, num_threads=1):
+        f = &arr[0]
+
+    return f[0]