From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Victor Toso <me@victortoso.com>
Date: Fri, 14 Oct 2016 18:12:01 +0200
Subject: [PATCH] clipboard: Fix crash by handling error

As manual states below, text could be NULL for different reasons and
we should handle that. I've included a debug message to help
identifying possible regressions from wayland's clipboard.

This crash is a regression from 7b0de6217670e0f668aff2949f

 "The text parameter to callback will contain the resulting text if
 the request succeeded, or NULL if it failed. This could happen for
 various reasons, in particular if the clipboard was empty or if the
 contents of the clipboard could not be converted into text form."

Resolves: rhbz#1384676

Signed-off-by: Victor Toso <victortoso@redhat.com>
Acked-by: Pavel Grunt <pgrunt@redhat.com>
(cherry picked from commit 03c016bea939ee4a26e90d80fa1012a993a8ea47)
---
 src/spice-gtk-session.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/spice-gtk-session.c b/src/spice-gtk-session.c
index f04d5e8..2da9bc0 100644
--- a/src/spice-gtk-session.c
+++ b/src/spice-gtk-session.c
@@ -918,6 +918,11 @@ static void clipboard_received_text_cb(GtkClipboard *clipboard,
     if (self == NULL)
         return;
 
+    if (text == NULL) {
+        SPICE_DEBUG("Failed to retrieve clipboard text");
+        return;
+    }
+
     g_return_if_fail(SPICE_IS_GTK_SESSION(self));
 
     selection = get_selection_from_clipboard(self->priv, clipboard);