Only generate ::column::scroll-marker elements that generate boxes

The code asserts that a ::scroll-marker always have a LayoutObject. This is ensured in Element::CreatePseudoElementIfNeeded() for other pseudo elements. Bug: 386415620 Change-Id: Id2ba77b654e3af46fa29da886f856799ae6560c7 Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6113610 Reviewed-by: Morten Stenshorne <[email protected]> Commit-Queue: Rune Lillesveen <[email protected]> Cr-Commit-Position: refs/heads/main@{#1401734}
tkntjsdw · Jan 3, 2025 · 7e05dc9 · 7e05dc9
1 parent e27025b
commit 7e05dc9
Showing 1 changed file with 16 additions and 0 deletions.
diff --git a/css/css-overflow/column-scroll-marker-no-content-crash.html b/css/css-overflow/column-scroll-marker-no-content-crash.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<title>::column::scroll-marker without content should not crash</title>
+<link rel="help" href="https://crbug.com/386415620">
+<style>
+  #container {
+    overflow: hidden;
+    width: 10px;
+    column-count: 1;
+    scroll-marker-group: before;
+  }
+  #container::column::scroll-marker {
+    display: inline;
+  }
+</style>
+<p>PASS if no crash.</p>
+<div id="container">Two columns</div>