gdb/

	Add gdb.Value.is_optimized_out attribute.
	* python/python-value.c (valpy_get_is_optimized_out): New
	function.
	(value_object_getset): New variable.
	(value_object_type): Initialize tp_getset element.

gdb/doc/
	* gdb.texinfo (Values From Inferior): Document is_optimized_out
	attribute.

gdb/testsuite/
	* gdb.python/python-value.exp (test_value_in_inferior): Test
	gdb.Value.is_optimized_out attribute.

2 files changed, 21 insertions, 5 deletions

diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index 2c4b291..beca846 100644
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,8 @@
+2009-03-26  Thiago Jung Bauermann  <bauerman@br.ibm.com>
+
+	* gdb.texinfo (Values From Inferior): Document is_optimized_out
+	attribute.
+
 2009-03-25  Pedro Alves  <pedro@codesourcery.com>
 
 	* observer.texi (thread_exit): Add "silent" parameter.
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 134919d..8db5679 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -18325,13 +18325,23 @@ bar = some_val['foo']
 
 Again, @code{bar} will also be a @code{gdb.Value} object.
 
-For pointer data types, @code{gdb.Value} provides a method for
-dereferencing the pointer to obtain the object it points to.
+The following attribute is provided:
 
+@table @code
+@cindex optimized out value in Python
+@defmethod Value is_optimized_out
+This read-only boolean attribute is true if the compiler optimized out
+this value, thus it is not available for fetching from the inferior.
+@end defmethod
+@end table
+
+The following methods are provided:
+
+@table @code
 @defmethod Value dereference
-This method returns a new @code{gdb.Value} object whose contents is
-the object pointed to by the pointer.  For example, if @code{foo} is
-a C pointer to an @code{int}, declared in your C program as
+For pointer data types, this method returns a new @code{gdb.Value} object
+whose contents is the object pointed to by the pointer.  For example, if
+@code{foo} is a C pointer to an @code{int}, declared in your C program as
 
 @smallexample
 int *foo;
@@ -18375,6 +18385,7 @@ will be used, if the current language is able to supply one.
 The optional @var{errors} argument is the same as the corresponding
 argument to Python's @code{string.decode} method.
 @end defmethod
+@end table
 
 @node Commands In Python
 @subsubsection Commands In Python