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Fail to scroll if the given mark is not in text view's current buffer

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In gtk_text_view_queue_scroll() we need to verify if the given mark
exists in the text view's current buffer.  When not done, this can
result in corruption of the BTree data structure.  Patch merged from
maemo-gtk.
This commit is contained in:
Kristian Rietveld 2009-09-04 13:34:56 +02:00
parent 3a917a2a67
commit 7a3d98324d
1 changed files with 7 additions and 0 deletions
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7
gtk/gtktextview.c
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@ -1894,6 +1894,7 @@ gtk_text_view_queue_scroll (GtkTextView *text_view,
gdouble xalign,
gdouble yalign)
{
const char *mark_name;
GtkTextIter iter;
GtkTextPendingScroll *scroll;
@ -1906,6 +1907,12 @@ gtk_text_view_queue_scroll (GtkTextView *text_view,
scroll->xalign = xalign;
scroll->yalign = yalign;
/* We need to verify that the buffer contains the mark, otherwise this
* can lead to data structure corruption later on.
*/
mark_name = gtk_text_mark_get_name (mark);
g_return_if_fail (gtk_text_buffer_get_mark (get_buffer (text_view), mark_name));
gtk_text_buffer_get_iter_at_mark (get_buffer (text_view), &iter, mark);
scroll->mark = gtk_text_buffer_create_mark (get_buffer (text_view),