* value.h (value_contents_equal): New prototype.

* value.c (value_contents_equal): New function.
* varobj.c: Include "exceptions.h" and "gdb_assert.h".  Don't
include <math.h>.
(varobj_set_value): Initialize error to zero.
(varobj_update): Rename error2 to error and initialize it to zero.
Slightly change the wording of some comments.
(my_value_equal): Reimplement using TRY_CATCH and
value_contents_equal.

1 files changed, 20 insertions, 0 deletions

diff --git a/gdb/value.c b/gdb/value.c
index eb0cc2c8633..1ab5f79de07 100644
--- a/gdb/value.c
+++ b/gdb/value.c
@@ -358,6 +358,26 @@ value_contents_writeable (struct value *value)
   return value->aligner.contents;
 }
 
+/* Return non-zero if VAL1 and VAL2 have the same contents.  Note that
+   this function is different from value_equal; in C the operator ==
+   can return 0 even if the two values being compared are equal.  */
+
+int
+value_contents_equal (struct value *val1, struct value *val2)
+{
+  struct type *type1;
+  struct type *type2;
+  int len;
+
+  type1 = check_typedef (value_type (val1));
+  type2 = check_typedef (value_type (val2));
+  len = TYPE_LENGTH (type1);
+  if (len != TYPE_LENGTH (type2))
+    return 0;
+
+  return (memcmp (value_contents (val1), value_contents (val2), len) == 0);
+}
+
 int
 value_optimized_out (struct value *value)
 {