[pypy-commit] cffi default: Test and fix.

[arigo]

Author: Armin Rigo <arigo at tunes.org>
Branch: 
Changeset: r377:d55cf06971e3
Date: 2012-06-15 20:57 +0200
http://bitbucket.org/cffi/cffi/changeset/d55cf06971e3/

Log:	Test and fix.

diff --git a/c/_ffi_backend.c b/c/_ffi_backend.c
--- a/c/_ffi_backend.c
+++ b/c/_ffi_backend.c
@@ -3119,7 +3119,7 @@
         return NULL;
 
     if (cd->c_type->ct_flags & CT_POINTER)
-        length = cd->c_type->ct_size;
+        length = cd->c_type->ct_itemdescr->ct_size;
     else if (cd->c_type->ct_flags & CT_ARRAY)
         length = get_array_length(cd) * cd->c_type->ct_itemdescr->ct_size;
     else {
diff --git a/testing/backend_tests.py b/testing/backend_tests.py
--- a/testing/backend_tests.py
+++ b/testing/backend_tests.py
@@ -759,15 +759,16 @@
 
     def test_ffi_buffer_ptr(self):
         ffi = FFI(backend=self.Backend())
-        a = ffi.new("int", 100)
+        a = ffi.new("short", 100)
         b = ffi.buffer(a)
         assert type(b) is buffer
+        assert len(str(b)) == 2
         if sys.byteorder == 'little':
-            assert str(b) == '\x64\x00\x00\x00'
+            assert str(b) == '\x64\x00'
             b[0] = '\x65'
         else:
-            assert str(b) == '\x00\x00\x00\x64'
-            b[3] = '\x65'
+            assert str(b) == '\x00\x64'
+            b[1] = '\x65'
         assert a[0] == 101
 
     def test_ffi_buffer_array(self):