Author: Antonio Cuni <[email protected]>
Branch: ffistruct
Changeset: r55090:7db2e26caf2f
Date: 2012-05-14 21:38 +0200
http://bitbucket.org/pypy/pypy/changeset/7db2e26caf2f/
Log: add a test to check that we can take pointers to incomplete
structures
diff --git a/pypy/module/_ffi/test/test_struct.py
b/pypy/module/_ffi/test/test_struct.py
--- a/pypy/module/_ffi/test/test_struct.py
+++ b/pypy/module/_ffi/test/test_struct.py
@@ -245,6 +245,22 @@
assert repr(descr.ffitype) == '<ffi type struct foo>'
assert descr.ffitype.sizeof() == longsize*2
raises(ValueError, "descr.define_fields(fields)")
+
+ def test_pointer_to_incomplete_struct(self):
+ from _ffi import _StructDescr, Field, types
+ longsize = types.slong.sizeof()
+ fields = [
+ Field('x', types.slong),
+ Field('y', types.slong),
+ ]
+ descr = _StructDescr('foo')
+ foo_ffitype = descr.ffitype
+ foo_p = types.Pointer(descr.ffitype)
+ assert foo_p.deref_pointer() is foo_ffitype
+ descr.define_fields(fields)
+ assert descr.ffitype is foo_ffitype
+ assert foo_p.deref_pointer() is foo_ffitype
+ assert types.Pointer(descr.ffitype) is foo_p
def test_compute_shape(self):
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