From 3f036ec6b7553247352e0e9bd6dd2098a564e83a Mon Sep 17 00:00:00 2001
From: Eitan Isaacson <eitan@monotonous.org>
Date: Fri, 10 Mar 2023 03:40:21 +0000
Subject: [PATCH] Bug 1818450 - StringAttributesFromAccAttributes: Return empty
 dictionary if input is null. r=morgan

Differential Revision: https://phabricator.services.mozilla.com/D172173
---
 accessible/mac/MacUtils.mm | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/accessible/mac/MacUtils.mm b/accessible/mac/MacUtils.mm
index 26e2af14858d..9179ab21a039 100644
--- a/accessible/mac/MacUtils.mm
+++ b/accessible/mac/MacUtils.mm
@@ -80,6 +80,10 @@ static NSColor* ColorFromColor(const Color& aColor) {
 
 NSDictionary* StringAttributesFromAccAttributes(AccAttributes* aAttributes,
                                                 Accessible* aContainer) {
+  if (!aAttributes) {
+    return @{};
+  }
+
   NSMutableDictionary* attrDict =
       [NSMutableDictionary dictionaryWithCapacity:aAttributes->Count()];
   NSMutableDictionary* fontAttrDict = [[NSMutableDictionary alloc] init];