From d02f076a54bc3ebbebde232a7ea45df192b4a668 Mon Sep 17 00:00:00 2001
From: Frank Bielig <frank.bielig@mbition.io>
Date: Mon, 4 Nov 2024 12:01:46 +0100
Subject: [PATCH] Fix LTO linker warning
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

`warning: ‘__builtin_strlen’ reading 1 or more bytes from a region of
size 0 [-Wstringop-overread]`

Signed-off-by: Frank Bielig <frank@bielig.info>
---
 include/osmium/builder/osm_object_builder.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/osmium/builder/osm_object_builder.hpp b/include/osmium/builder/osm_object_builder.hpp
index c3228ca7..afa70894 100644
--- a/include/osmium/builder/osm_object_builder.hpp
+++ b/include/osmium/builder/osm_object_builder.hpp
@@ -470,7 +470,7 @@ namespace osmium {
              * @pre @code strlen(user) < 2^16 - 1 @endcode
              */
             TDerived& set_user(const char* user) {
-                const auto len = std::strlen(user);
+                const auto len = (user == nullptr) ? 0 : std::strlen(user);
                 assert(len < std::numeric_limits<string_size_type>::max());
                 return set_user(user, static_cast<string_size_type>(len));
             }