From c93208a04d101922f68d1526800b0246336c39d8 Mon Sep 17 00:00:00 2001
From: Nikolay <211292+kolya7k@users.noreply.github.com>
Date: Fri, 2 Jul 2021 17:19:35 +0300
Subject: [PATCH] Update core.h

Fix compilation when provided user-defined formatter for class instances like

template <>
struct fmt::formatter<Player*>
{
	static constexpr auto parse(format_parse_context &ctx)
	{
		return ctx.end();
	}

	template <typename FormatContext>
	auto format(const Player *player, FormatContext &ctx) const
	{
		return format_to(ctx.out(), "{}, device {}", player->id, player->device);
	}
};
---
 include/fmt/core.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/include/fmt/core.h b/include/fmt/core.h
index f0426093..542eb1e1 100644
--- a/include/fmt/core.h
+++ b/include/fmt/core.h
@@ -1300,7 +1300,9 @@ template <typename Context> struct arg_mapper {
   // We use SFINAE instead of a const T* parameter to avoid conflicting with
   // the C array overload.
   template <typename T>
-  FMT_CONSTEXPR auto map(T) -> enable_if_t<std::is_pointer<T>::value, int> {
+  FMT_CONSTEXPR auto map(T) -> enable_if_t<std::is_pointer<T>::value &&
+                                           !has_formatter<T, Context>::value &&
+                                           !has_fallback_formatter<T, char_type>::value, int> {
     // Formatting of arbitrary pointers is disallowed. If you want to output
     // a pointer cast it to "void *" or "const void *". In particular, this
     // forbids formatting of "[const] volatile char *" which is printed as bool