| <!DOCTYPE html> |
| <title>Should not crash when inserting an element inside a :first-line pseudo.</title> |
| <link rel="help" href="https://drafts.csswg.org/css-pseudo-4/"> |
| <style> |
| p:first-line, p:first-letter { |
| font-family: serif; |
| } |
| </style> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <p id=target> |
| test<sup>sup</sup> |
| </p> |
| <script> |
| test(()=>{ |
| const target = document.getElementById('target'); |
| target.insertBefore(document.createElement('img'), target.lastChild) |
| }); |
| </script> |
