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gdkdragsource: Ensure button >= 1

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So the left shift later doesn't overflow.
This commit is contained in:
Timm Bäder 2017-03-21 16:06:13 +01:00 committed by Daniel Boles
parent 92fd8cb81b
commit 6f30e97c3d
1 changed files with 2 additions and 0 deletions
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2
gtk/gtkdragsource.c
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@ -58,6 +58,8 @@ gtk_drag_source_gesture_begin (GtkGesture *gesture,
else
button = gtk_gesture_single_get_current_button (GTK_GESTURE_SINGLE (gesture));
g_assert (button >= 1);
if (!site->start_button_mask ||
!(site->start_button_mask & (GDK_BUTTON1_MASK << (button - 1))))
gtk_gesture_set_state (gesture, GTK_EVENT_SEQUENCE_DENIED);