From 17fff76fea2b15a52d03f74d2dedbaec58330a4f Mon Sep 17 00:00:00 2001
From: Eli Zaretskii <eliz@gnu.org>
Date: Wed, 9 Sep 2015 18:56:06 +0300
Subject: [PATCH] Fix display of complex local data types in GDB-MI

* lisp/progmodes/gdb-mi.el (gdb-locals-handler-custom): If a
variable has no value, display "<complex data type>" as a
placeholder, instead of a confusing "nil".  (Bug#21438)
---
 lisp/progmodes/gdb-mi.el | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lisp/progmodes/gdb-mi.el b/lisp/progmodes/gdb-mi.el
index 1eff62c5acf..3860c81065d 100644
--- a/lisp/progmodes/gdb-mi.el
+++ b/lisp/progmodes/gdb-mi.el
@@ -4038,6 +4038,8 @@ member."
       (let ((name (bindat-get-field local 'name))
             (value (bindat-get-field local 'value))
             (type (bindat-get-field local 'type)))
+        (when (not value)
+          (setq value "<complex data type>"))
         (if (or (not value)
                 (string-match "\\0x" value))
             (add-text-properties 0 (length name)
-- 
2.11.4.GIT