| <!DOCTYPE html> |
| <script> |
| if (window.testRunner) { |
| testRunner.dumpAsText(); |
| testRunner.waitUntilDone(); |
| window.onload = function() { |
| testRunner.layoutAndPaintAsyncThen(function() { |
| mutateTree(); |
| testRunner.layoutAndPaintAsyncThen(function() { |
| testRunner.notifyDone(); |
| }); |
| }); |
| }; |
| } else { |
| window.onload = function() { setTimeout(mutateTree, 100); }; |
| } |
| const svgNs = 'http://www.w3.org/2000/svg'; |
| function buildPattern(patternId, refId) { |
| var pattern = document.createElementNS(svgNs, 'pattern'); |
| var rect = pattern.appendChild(document.createElementNS(svgNs, 'rect')); |
| pattern.setAttribute('id', patternId); |
| pattern.setAttribute('width', 1); |
| pattern.setAttribute('height', 1); |
| rect.setAttribute('width', 100); |
| rect.setAttribute('height', 100); |
| rect.setAttribute('fill', 'url(#' + refId + ')'); |
| return pattern; |
| } |
| function mutateTree() { |
| // Build a three-step pattern cycle in a detached |
| // subtree and then insert it at load. |
| var defs = document.createElementNS(svgNs, 'defs'); |
| defs.appendChild(buildPattern('p3', 'p1')); |
| defs.appendChild(buildPattern('p2', 'p3')); |
| defs.appendChild(buildPattern('p1', 'p2')); |
| document.querySelector('svg').appendChild(defs); |
| } |
| </script> |
| <p>PASS if no crash (stack overflow).</p> |
| <svg width="100" height="100"> |
| <rect width="100" height="100" fill="url(#p1)"/> |
| </svg> |
