Index: ios/chrome/browser/ui/util/unicode_util.mm |
diff --git a/ios/chrome/browser/ui/util/unicode_util.mm b/ios/chrome/browser/ui/util/unicode_util.mm |
index 0e68612eeca0b14f3678b27870cea93827aec609..408c17de35add1ee68480931ca5c1f8d9e8bd478 100644 |
--- a/ios/chrome/browser/ui/util/unicode_util.mm |
+++ b/ios/chrome/browser/ui/util/unicode_util.mm |
@@ -6,6 +6,10 @@ |
#include "base/logging.h" |
+#if !defined(__has_feature) || !__has_feature(objc_arc) |
+#error "This file requires ARC support." |
+#endif |
+ |
namespace unicode_util { |
namespace { |
// Character ranges for characters with R or AL bidirectionality. |