Rename check_size extend option to ignore.

Cython/Compiler/ModuleNode.py

@@ -3066,7 +3066,7 @@ class ModuleNode(Nodes.Node, Nodes.BlockNode):
             cs = 0
         elif type.check_size == 'warn':
             cs = 1
-        elif type.check_size == 'extend':
+        elif type.check_size == 'ignore':
             cs = 2
         else:
             raise RuntimeError("invalid value for check_size '%s' when compiling %s.%s" % (

Cython/Compiler/Nodes.py

@@ -4630,7 +4630,7 @@ class CClassDefNode(ClassDefNode):
     #  bases              TupleNode         Base class(es)
     #  objstruct_name     string or None    Specified C name of object struct
     #  typeobj_name       string or None    Specified C name of type object
-    #  check_size         'warn', 'error', 'extend'     What to do if tp_basicsize does not match
+    #  check_size         'warn', 'error', 'ignore'     What to do if tp_basicsize does not match
     #  in_pxd             boolean           Is in a .pxd file
     #  decorators         [DecoratorNode]   list of decorators or None
     #  doc                string or None

Cython/Compiler/Parsing.py

@@ -3545,8 +3545,8 @@ def p_c_class_options(s):
         elif s.systring == 'check_size':
             s.next()
             check_size = p_ident(s)
-            if check_size not in ('extend', 'warn', 'error'):
-                s.error("Expected one of extend, warn or error, found %r" % check_size)
+            if check_size not in ('ignore', 'warn', 'error'):
+                s.error("Expected one of ignore, warn or error, found %r" % check_size)
         if s.sy != ',':
             break
         s.next()

Cython/Compiler/PyrexTypes.py

@@ -1345,7 +1345,7 @@ class PyExtensionType(PyObjectType):
     #  vtable_cname     string           Name of C method table definition
     #  early_init       boolean          Whether to initialize early (as opposed to during module execution).
     #  defered_declarations [thunk]      Used to declare class hierarchies in order
-    #  check_size       'warn', 'error', 'extend'    What to do if tp_basicsize does not match
+    #  check_size       'warn', 'error', 'ignore'    What to do if tp_basicsize does not match
 
     is_extension_type = 1
     has_attributes = 1

Cython/Includes/numpy/__init__.pxd

@@ -203,7 +203,7 @@ cdef extern from "numpy/arrayobject.h":
     ctypedef struct PyArray_Descr:
         pass
 
-    ctypedef class numpy.dtype [object PyArray_Descr, check_size extend]:
+    ctypedef class numpy.dtype [object PyArray_Descr, check_size ignore]:
         # Use PyDataType_* macros when possible, however there are no macros
         # for accessing some of the fields, so some are defined.
         cdef PyTypeObject* typeobj
@@ -239,7 +239,7 @@ cdef extern from "numpy/arrayobject.h":
         # like PyArrayObject**.
         pass
 
-    ctypedef class numpy.ndarray [object PyArrayObject, check_size extend]:
+    ctypedef class numpy.ndarray [object PyArrayObject, check_size ignore]:
         cdef __cythonbufferdefaults__ = {"mode": "strided"}
 
         cdef:

docs/src/userguide/extension_types.rst

@@ -771,11 +771,11 @@ Where:
 - ``object_struct_name`` is the name to assume for the type's C struct.
 - ``type_object_name`` is the name to assume for the type's statically
   declared type object.
-- ``cs_option`` is ``warn`` (the default), ``error``, or ``extend`` and is only
+- ``cs_option`` is ``warn`` (the default), ``error``, or ``ignore`` and is only
   used for external extension types.  If ``error``, the ``sizeof(object_struct)``
   that was found at compile time must match the type's runtime ``tp_basicsize``
   exactly, otherwise the module import will fail with an error.  If ``warn``
-  or ``extend``, the ``object_struct`` is allowed to be smaller than the type's
+  or ``ignore``, the ``object_struct`` is allowed to be smaller than the type's
   ``tp_basicsize``, which indicates the runtime type may be part of an updated
   module, and that the external module's developers extended the object in a
   backward-compatible fashion (only adding new fields to the end of the object).

tests/run/check_size.srctree

@@ -139,12 +139,12 @@ cdef extern from "check_size_smaller.h":
 cpdef public int testme(Foo f) except -1:
     return f.f9
 
-######## _check_size_extend.pyx ########
+######## _check_size_ignore.pyx ########
 
 cdef extern from "check_size_smaller.h":
 
     # Allow size to be larger
-    ctypedef class check_size.Foo [object FooStructSmall, check_size extend]:
+    ctypedef class check_size.Foo [object FooStructSmall, check_size ignore]:
         cdef:
             int f9
 
@@ -220,10 +220,10 @@ assert ret == 23
 
 with warnings.catch_warnings(record=True) as w:
     # No warning, runtime vendor must provide backward compatibility
-    import _check_size_extend
+    import _check_size_ignore
     assert len(w) == 0
 
-ret = _check_size_extend.testme(foo)
+ret = _check_size_ignore.testme(foo)
 assert ret == 23
 
 try: