From 77bda756d8370722ed1d14f5b76df3af6dc4101b Mon Sep 17 00:00:00 2001
From: David Shin <dshin@mozilla.com>
Date: Tue, 21 Nov 2023 21:14:11 +0000
Subject: [PATCH] Bug 1865668: Don't generate text node for pseudo-elements
 with empty string content. r=emilio

Differential Revision: https://phabricator.services.mozilla.com/D194094
---
 layout/base/nsCSSFrameConstructor.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/layout/base/nsCSSFrameConstructor.cpp b/layout/base/nsCSSFrameConstructor.cpp
index 045304bf1bb3..4bd4e976cd62 100644
--- a/layout/base/nsCSSFrameConstructor.cpp
+++ b/layout/base/nsCSSFrameConstructor.cpp
@@ -1551,8 +1551,12 @@ void nsCSSFrameConstructor::CreateGeneratedContent(
     }
 
     case Type::String: {
-      RefPtr text = CreateGenConTextNode(
-          aState, NS_ConvertUTF8toUTF16(item.AsString().AsString()), nullptr);
+      const auto string = item.AsString().AsString();
+      if (string.IsEmpty()) {
+        return;
+      }
+      RefPtr text =
+          CreateGenConTextNode(aState, NS_ConvertUTF8toUTF16(string), nullptr);
       aAddChild(text);
       return;
     }