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diff --git a/test/degenerate-rel-curve-to.c b/test/degenerate-rel-curve-to.c
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+/*
+ * Copyright © 2005 Red Hat, Inc.
+ * Copyright © 2009 Chris Wilson
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Red Hat, Inc. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Red Hat, Inc. makes no representations about the
+ * suitability of this software for any purpose. It is provided "as
+ * is" without express or implied warranty.
+ *
+ * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Carl D. Worth <cworth@cworth.org>
+ * Chris Wilson <chris@chris-wilson.co.uk>
+ */
+
+#include "cairo-test.h"
+
+#define SIZE 30
+
+/* Another attempt at avoiding unnecessary splines was made, where
+ * a curve-to that ended on the same point as it began were discarded.
+ * The same bug was made to rel-curve-to as well, hence this test.
+ */
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ cairo_set_source_rgb (cr, 1.0, 1.0, 1.0); /* white */
+ cairo_paint (cr);
+
+ cairo_set_line_width (cr, 1.0);
+ cairo_set_line_cap (cr, CAIRO_LINE_CAP_BUTT);
+ cairo_set_line_join (cr, CAIRO_LINE_JOIN_BEVEL);
+ cairo_set_source_rgb (cr, 0.0, 0.0, 0.0); /* black */
+
+ /* entirely degenerate */
+ cairo_move_to (cr, 2.5, 2.5);
+ cairo_rel_curve_to (cr,
+ 0., 0.,
+ 0., 0.,
+ 0., 0.);
+ cairo_stroke (cr);
+
+ /* horizontal */
+ cairo_move_to (cr, 5.5, 2.5);
+ cairo_rel_curve_to (cr,
+ 10., 0.,
+ -10., 0.,
+ 0., 0.);
+ cairo_stroke (cr);
+
+ /* vertical */
+ cairo_move_to (cr, 5.5, 2.5);
+ cairo_rel_curve_to (cr,
+ 0., 10.,
+ 0., -10.,
+ 0., 0.);
+ cairo_stroke (cr);
+
+ cairo_translate (cr, 15, 0);
+
+ /* horizontal/vertical */
+ cairo_move_to (cr, 5.5, 0.5);
+ cairo_rel_curve_to (cr,
+ -6., 0.,
+ 0., 10.,
+ 0., 0.);
+
+ cairo_translate (cr, 10, 0);
+
+ /* vertical/horizontal */
+ cairo_move_to (cr, 5.5, 0.0);
+ cairo_rel_curve_to (cr,
+ 0., 11.,
+ 5., 0.,
+ 0., 0.);
+ cairo_stroke (cr);
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (degenerate_rel_curve_to,
+ "Test optimization treating degenerate rel-curve-to as line-to",
+ "path", /* keywords */
+ NULL, /* requirements */
+ 40,
+ 5,
+ NULL, draw)