212823 Calling Region.add with only 1 polygon point causes a segfault
diff --git a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Region.java b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Region.java
index 0702989..fd96952 100644
--- a/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Region.java
+++ b/bundles/org.eclipse.swt/Eclipse SWT/gtk/org/eclipse/swt/graphics/Region.java
@@ -100,6 +100,12 @@
public void add (int[] pointArray) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ /*
+ * Bug in GTK. If gdk_region_polygon() is called with one point,
+ * it segment faults. The fix is to make sure that it is called
+ * with enough points for a polygon.
+ */
+ if (pointArray.length < 6) return;
int /*long*/ polyRgn = OS.gdk_region_polygon(pointArray, pointArray.length / 2, OS.GDK_EVEN_ODD_RULE);
OS.gdk_region_union(handle, polyRgn);
OS.gdk_region_destroy(polyRgn);
@@ -456,6 +462,12 @@
public void subtract (int[] pointArray) {
if (isDisposed()) SWT.error(SWT.ERROR_GRAPHIC_DISPOSED);
if (pointArray == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
+ /*
+ * Bug in GTK. If gdk_region_polygon() is called with one point,
+ * it segment faults. The fix is to make sure that it is called
+ * with enough points for a polygon.
+ */
+ if (pointArray.length < 6) return;
int /*long*/ polyRgn = OS.gdk_region_polygon(pointArray, pointArray.length / 2, OS.GDK_EVEN_ODD_RULE);
OS.gdk_region_subtract(handle, polyRgn);
OS.gdk_region_destroy(polyRgn);
