[core] peer must not wrap itself

2019-02-28 16:55:08 +02:00
parent 810999fadf
commit ceec74f52f
1 changed files with 3 additions and 1 deletions
--- a/include/mbgl/util/peer.hpp
+++ b/include/mbgl/util/peer.hpp
@@ -12,7 +12,9 @@ public:
    peer() noexcept : storage(nullptr, noop_deleter) {}

    template <class T>
-    peer(T&& value) noexcept : storage(new std::decay_t<T>(std::forward<T>(value)), cast_deleter<std::decay_t<T>>) {}
+    peer(T&& value) noexcept : storage(new std::decay_t<T>(std::forward<T>(value)), cast_deleter<std::decay_t<T>>) {
+        static_assert(!std::is_same<peer, std::decay_t<T>>::value, "Peer must not wrap itself.");
+    }

    bool has_value() const noexcept { return static_cast<bool>(storage); }