Fixed the trailing return types being required for substrate::span to…

… compile cleanly
bad-alloc-heavy-industries · May 10, 2023 · 052066b · 052066b
1 parent 49a0195
commit 052066b
Showing 1 changed file with 3 additions and 3 deletions.
diff --git a/substrate/span b/substrate/span
@@ -25,11 +25,11 @@ namespace substrate
 {
 	template<typename...> using void_t = void;
 
-	template<typename C> constexpr auto data(C &c) { return c.data(); }
-	template<typename C> constexpr auto data(const C &c) { return c.data(); }
+	template<typename C> constexpr auto data(C &c) -> decltype(c.data()) { return c.data(); }
+	template<typename C> constexpr auto data(const C &c) -> decltype(c.data()) { return c.data(); }
 	template<typename T, std::size_t N> constexpr T *data(T (&array)[N]) noexcept { return array; }
 	template<typename E> constexpr const E *data(std::initializer_list<E> il) noexcept { return il.data(); }
-	template<typename C> constexpr auto size(const C &c) { return c.size(); }
+	template<typename C> constexpr auto size(const C &c) -> decltype(c.size()) { return c.size(); }
 	template<typename T, std::size_t N> constexpr std::size_t size(const T (&array)[N]) noexcept { return N; }
 	template<typename T, std::size_t N> constexpr std::ptrdiff_t ssize(const T (&array)[N]) noexcept
 		{ return static_cast<std::ptrdiff_t>(N); }