1 files changed, 24 insertions, 0 deletions
diff --git a/layout/reftests/bugs/691571-1.html b/layout/reftests/bugs/691571-1.html
new file mode 100644
index 0000000000..c2c1ae103d
--- /dev/null
+++ b/layout/reftests/bugs/691571-1.html
@@ -0,0 +1,24 @@
+<!DOCTYPE html>
+<html>
+<body>
+<canvas id="A" width=200 height=50></canvas><br />
+<canvas id="B" width=200 height=50></canvas>
+<script>
+  var canvasA = document.getElementById("A"),
+    ctxA = canvasA.getContext('2d'),
+    canvasB = document.getElementById("B"),
+    ctxB = canvasB.getContext('2d'),
+    width = canvasA.width,
+    height = canvasA.height;
+
+  ctxA.fillStyle = 'red';
+  ctxA.fillRect(0, 0, width, height);
+  var pat = ctxB.createPattern(canvasA, "repeat");
+
+  ctxA.clearRect(0, 0, width, height);
+
+  ctxB.fillStyle = pat;
+  ctxB.fillRect(0, 0, width, height);
+</script>
+</body>
+</html>