Avoid calling _PyDict_NewPresized() for len(dict) <=8, which is the minimum dict size in CPython.

Cython/Utility/Coroutine.c

@@ -1742,7 +1742,7 @@ static PyObject* __Pyx_Coroutine_patch_module(PyObject* module, const char* py_c
 #if defined(__Pyx_Generator_USED) || defined(__Pyx_Coroutine_USED)
     int result;
     PyObject *globals, *result_obj;
-    globals = __Pyx_PyDict_NewPresized(4);  if (unlikely(!globals)) goto ignore;
+    globals = PyDict_New();  if (unlikely(!globals)) goto ignore;
     result = PyDict_SetItemString(globals, "_cython_coroutine_type",
     #ifdef __Pyx_Coroutine_USED
         (PyObject*)__pyx_CoroutineType);

Cython/Utility/ModuleSetupCode.c

@@ -256,7 +256,7 @@
 #endif
 
 #if CYTHON_COMPILING_IN_CPYTHON || defined(_PyDict_NewPresized)
-#define __Pyx_PyDict_NewPresized(n)  _PyDict_NewPresized(n)
+#define __Pyx_PyDict_NewPresized(n)  ((n <= 8) ? PyDict_New() : _PyDict_NewPresized(n))
 #else
 #define __Pyx_PyDict_NewPresized(n)  PyDict_New()
 #endif

Cython/Utility/Printing.c

@@ -83,7 +83,7 @@ static int __Pyx_Print(PyObject* stream, PyObject *arg_tuple, int newline) {
             return -1;
     }
     if (stream) {
-        kwargs = __Pyx_PyDict_NewPresized(2);
+        kwargs = PyDict_New();
         if (unlikely(!kwargs))
             return -1;
         if (unlikely(PyDict_SetItem(kwargs, PYIDENT("file"), stream) < 0))
@@ -100,7 +100,7 @@ static int __Pyx_Print(PyObject* stream, PyObject *arg_tuple, int newline) {
         }
     } else if (!newline) {
         if (unlikely(!$print_function_kwargs)) {
-            $print_function_kwargs = __Pyx_PyDict_NewPresized(1);
+            $print_function_kwargs = PyDict_New();
             if (unlikely(!$print_function_kwargs))
                 return -1;
             end_string = PyUnicode_FromStringAndSize(" ", 1);