From 67760f52831cbfbb0014bc4744029c3e2c9840be Mon Sep 17 00:00:00 2001
From: Max Kellermann <mk@cm4all.com>
Date: Mon, 18 Jan 2021 22:32:29 +0100
Subject: [PATCH] util/AllocatedString: support casting a nulled instance to
 string_view

---
 src/util/AllocatedString.hxx | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/util/AllocatedString.hxx b/src/util/AllocatedString.hxx
index 19f17ee0e..2ca1218c9 100644
--- a/src/util/AllocatedString.hxx
+++ b/src/util/AllocatedString.hxx
@@ -125,7 +125,9 @@ public:
 	}
 
 	operator string_view() const noexcept {
-		return value;
+		return value != nullptr
+			? string_view(value)
+			: string_view();
 	}
 
 	constexpr const_pointer c_str() const noexcept {