2013-12-12 Siva Chandra Reddy <sivachandra@google.com>

	PR python/16113
	* NEWS (Python Scripting): Add entry for the new feature and the
	new attribute of gdb.Field objects.
	* python/py-type.c (gdbpy_is_field): New function
	(convert_field): Add 'parent_type' attribute to gdb.Field
	objects.
	* python/py-value.c (valpy_getitem): Allow subscript value to be
	a gdb.Field object.
	(value_has_field): New function
	(get_field_flag): New function
	* python/python-internal.h (gdbpy_is_field): Add declaration.

	testsuite/
	* gdb.python/py-value-cc.cc: Improve test case.
	* gdb.python/py-value-cc.exp: Add new tests to test usage of
	gdb.Field objects as subscripts on gdb.Value objects.

	doc/
	* gdb.texinfo (Values From Inferior): Add a note about using
	gdb.Field objects as subscripts on gdb.Value objects.
	(Types In Python): Add description about the new attribute
	"parent_type" of gdb.Field objects.

1 files changed, 30 insertions, 0 deletions

diff --git a/gdb/testsuite/gdb.python/py-value-cc.cc b/gdb/testsuite/gdb.python/py-value-cc.cc
index c010fc9..80094ec 100644
--- a/gdb/testsuite/gdb.python/py-value-cc.cc
+++ b/gdb/testsuite/gdb.python/py-value-cc.cc
@@ -16,8 +16,21 @@
    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 class A {
+ public:
+  int a;
 };
 
+union U {
+  int a;
+  char c;
+};
+
+class B : public A {
+ public:
+  char a;
+};
+
+typedef B Btd;
 typedef int *int_ptr;
 
 int
@@ -28,6 +41,22 @@ func (const A &a)
   int_ptr ptr = &val;
   int_ptr &int_ptr_ref = ptr;
 
+  B b;
+  B b1;
+
+  b.a = 'a';
+  b.A::a = 10;
+
+  B *b_obj = &b1;
+  b_obj->a = 'b';
+  b_obj->A::a = 100;
+
+  B &b_ref = b1;
+  Btd &b_td = b1;
+
+  U u;
+  u.a = 99;
+
   return 0; /* Break here.  */
 }
 
@@ -35,5 +64,6 @@ int
 main ()
 {
   A obj;
+
   return func (obj);
 }