summaryrefslogtreecommitdiff
path: root/test/infinite-join.c
diff options
context:
space:
mode:
Diffstat (limited to 'test/infinite-join.c')
-rw-r--r--test/infinite-join.c72
1 files changed, 72 insertions, 0 deletions
diff --git a/test/infinite-join.c b/test/infinite-join.c
new file mode 100644
index 000000000..a573f56a5
--- /dev/null
+++ b/test/infinite-join.c
@@ -0,0 +1,72 @@
+/*
+ * Copyright © 2006 Red Hat, Inc.
+ *
+ * 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 the
+ * copyright holders not be used in advertising or publicity
+ * pertaining to distribution of the software without specific,
+ * written prior permission. The copyright holders make no
+ * representations about the suitability of this software for any
+ * purpose. It is provided "as is" without express or implied
+ * warranty.
+ *
+ * THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL THE COPYRIGHT HOLDERS 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>
+ */
+
+/* Test case for bug #8379:
+ *
+ * infinite loop when stroking
+ * https://bugs.freedesktop.org/show_bug.cgi?id=8379
+ */
+
+#include "cairo-test.h"
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+ /* Paint white, then draw in black. */
+ cairo_set_source_rgb (cr, 1, 1, 1); /* white */
+ cairo_paint (cr);
+ cairo_set_source_rgb (cr, 0, 0, 0); /* black */
+
+ cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
+
+ /* scaling 2 times causes a slight rounding error in the ctm.
+ * Without that, the bug doesn't happen. */
+ cairo_scale (cr, 20 / 100., 20 / 100.);
+ cairo_scale (cr, 1. / 20, 1. / 20);
+
+ cairo_set_line_join (cr, CAIRO_LINE_JOIN_ROUND);
+ cairo_set_line_width (cr, 20);
+
+ cairo_translate (cr, -18300, -13200);
+
+ cairo_new_path (cr);
+ cairo_move_to (cr, 18928, 13843);
+ cairo_line_to (cr, 18500, 13843);
+ cairo_line_to (cr, 18500, 13400);
+ cairo_line_to (cr, 18928, 13400);
+ cairo_line_to (cr, 18928, 13843);
+ cairo_stroke (cr);
+
+ return CAIRO_TEST_SUCCESS;
+}
+
+CAIRO_TEST (infinite_join,
+ "Test case for infinite loop when stroking with round joins",
+ "stroke", /* keywords */
+ NULL,
+ 8, 8,
+ NULL, draw)