From: Matthias Clasen <mclasen@redhat.com>
Date: Tue, 31 Dec 2019 21:03:33 +0000 (-0500)
Subject: dnd: Be safer
X-Git-Tag: archive/raspbian/4.4.1+ds1-2+rpi1^2~18^2~20^2~470
X-Git-Url: https://dgit.raspbian.org/?a=commitdiff_plain;h=e02fd80adbc8019f30384e0b008104c66c6739bd;p=gtk4.git

dnd: Be safer

The contents of the selection are documented
to not be NULL if size is non-negative. So
use an empty string instead of NULL for size 0,
avoiding a crash.
---

diff --git a/gtk/gtkdnd.c b/gtk/gtkdnd.c
index e9024b6442..17dbb49876 100644
--- a/gtk/gtkdnd.c
+++ b/gtk/gtkdnd.c
@@ -171,7 +171,7 @@ gtk_drag_get_data_finish (GtkDragGetData *data,
   sdata.type = data->mime_type;
   sdata.format = 8;
   sdata.length = size;
-  sdata.data = bytes;
+  sdata.data = bytes ? bytes : (guchar *)g_strdup ("");
   sdata.display = gtk_widget_get_display (data->widget);
   
   if (site && site->target_list)