Bug 1950081 [wpt PR 50904] - [carousel] Fix AttachLayoutTree for ::scroll-marker expecting parent, a=testonly

danielsakhapov · moz-wptsync-bot · commit 7b86ff4ef31b · 2025-02-28T06:54:32.000Z
Automatic update from web-platform-tests [carousel] Fix AttachLayoutTree for ::scroll-marker expecting parent If ::scroll-marker is inside the element that requires style recalc, but not layout, context.parent is nullptr. So, we have to if() attachment instead of CHECK(context.parent). Fixed: 394980089 Change-Id: Iefdc99a1b65cabeb91d1cf5d7f79e47a0a787e0a Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6298048 Reviewed-by: Rune Lillesveen <futhark@chromium.org> Commit-Queue: Daniil Sakhapov <sakhapov@chromium.org> Cr-Commit-Position: refs/heads/main@{#1423840} -- wpt-commits: 6f1558a74c6ef1f52085a594cae98744b260ef6a wpt-pr: 50904
diff --git a/testing/web-platform/tests/css/css-overflow/scroll-markers-inside-canvas-crash.html b/testing/web-platform/tests/css/css-overflow/scroll-markers-inside-canvas-crash.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<link rel="help" href="crbug.com/394980089">
+<style>
+  #scroller { overflow: scroll; scroll-marker-group: after; }
+  #item::scroll-marker { content: "X" }
+</style>
+<div id="scroller">
+  <canvas>
+    <div id="item">You don't see me</div>
+  </canvas>
+</div>
diff --git a/testing/web-platform/tests/css/css-overflow/scroll-markers-inside-select-crash.html b/testing/web-platform/tests/css/css-overflow/scroll-markers-inside-select-crash.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<link rel="help" href="crbug.com/394980089">
+<style>
+  #scroller {
+    overflow: scroll;
+    scroll-marker-group: after;
+  }
+  #scroller div::scroll-marker {
+    content: counter(test);
+  }
+</style>
+<select>
+  <div id="scroller">
+    <div></div>
+  </div>
+</select>
