From f6a783ad2ed5c4f9070274221e6e99c8dd406373 Mon Sep 17 00:00:00 2001
From: Daumantas Kavolis <12998363+dkavolis@users.noreply.github.com>
Date: Tue, 24 Sep 2019 10:53:55 +0100
Subject: [PATCH] fix `get`

---
 include/fmt/compile.h | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/include/fmt/compile.h b/include/fmt/compile.h
index 8617ef85..952c1087 100644
--- a/include/fmt/compile.h
+++ b/include/fmt/compile.h
@@ -331,11 +331,12 @@ template <typename... Args> struct type_list {};
 
 // Returns a reference to the argument at index N from [first, rest...].
 template <int N, typename T, typename... Args>
-const auto& get(const T& first, const Args&... rest) {
-  if constexpr (sizeof...(Args) == 0)
+constexpr const auto& get(const T& first, const Args&... rest) {
+  static_assert(N < 1 + sizeof...(Args), "index is out of bounds");
+  if constexpr (N == 0)
     return first;
   else
-    return get(rest...);
+    return get<N - 1>(rest...);
 }
 
 template <int N, typename> struct get_type_impl;