[text-decorations] Fix a crash for ::first-line

This patch fixes a crash when `text-decoration` is applied to `::first-line`. Fixed: 345562934 Change-Id: If26564ca3dcb913236771ef4a634928485b68eca Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5677308 Reviewed-by: Kent Tamura <tkent@chromium.org> Auto-Submit: Koji Ishii <kojii@chromium.org> Commit-Queue: Koji Ishii <kojii@chromium.org> Cr-Commit-Position: refs/heads/main@{#1323270}
web-platform-tests · Jul 4, 2024 · cbcca1c · cbcca1c
1 parent 4993c18
commit cbcca1c
Showing 1 changed file with 18 additions and 0 deletions.
diff --git a/css/css-text-decor/crashtests/text-decoration-first-line-multi-crash.html b/css/css-text-decor/crashtests/text-decoration-first-line-multi-crash.html
@@ -0,0 +1,18 @@
+<!DOCTYPE html>
+<link rel="help" href="https://crbug.com/345562934">
+<link rel="help" href="https://drafts.csswg.org/css-text-decor-3/#text-decoration-line-property">
+<style>
+.c7 {
+  text-decoration: underline;
+  appearance: button;
+}
+
+.c7::first-line {
+  text-decoration: overline;
+}
+
+.c15 {
+  text-decoration: line-through;
+}
+</style>
+<dfn class="c7"><strong class="c15">test</strong></dfn>