From a9d62d3f354cb598b809ead32ef39e23e854d2f1 Mon Sep 17 00:00:00 2001
From: Dmitriy Kurkin <Dmitriy.Kurkin@itiviti.com>
Date: Tue, 14 Apr 2020 14:50:28 +0800
Subject: [PATCH] Add check for CompiledFormat to avoid ambiguous call

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

diff --git a/include/fmt/compile.h b/include/fmt/compile.h
index e4b12f34..64bd3089 100644
--- a/include/fmt/compile.h
+++ b/include/fmt/compile.h
@@ -576,7 +576,9 @@ OutputIt format_to(OutputIt out, const CompiledFormat& cf,
 }
 
 template <typename OutputIt, typename CompiledFormat, typename... Args,
-          FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value)>
+          FMT_ENABLE_IF(internal::is_output_iterator<OutputIt>::value &&
+                        std::is_base_of<internal::basic_compiled_format,
+                                        CompiledFormat>::value)>
 format_to_n_result<OutputIt> format_to_n(OutputIt out, size_t n,
                                          const CompiledFormat& cf,
                                          const Args&... args) {