From c75f6dcd3090d61f002f59ab7ee43d3e90105e9e Mon Sep 17 00:00:00 2001
From: Tomek Rozen <trozen@pumasoft.pl>
Date: Mon, 15 May 2017 10:48:49 +0200
Subject: [PATCH] Changing ArgArray template argument from unsigned to size_t
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Each instantiation of ArgArray template uses sizeof operator, which
returns a std::size_t value. GCC 7.1 warns about invalid conversion
(error: conversion to ‘unsigned int’ from ‘long unsigned
int’ may alter its value [-Werror=conversion]).

(cherry picked from commit e14bac62a0211857d2265081ecaa88dab1a97803)
---
 fmt/format.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/fmt/format.h b/fmt/format.h
index c2a4275a..68892d80 100644
--- a/fmt/format.h
+++ b/fmt/format.h
@@ -2157,10 +2157,10 @@ inline uint64_t make_type(const T &arg) {
   return MakeValue< BasicFormatter<char> >::type(arg);
 }
 
-template <unsigned N, bool/*IsPacked*/= (N < ArgList::MAX_PACKED_ARGS)>
+template <std::size_t N, bool/*IsPacked*/= (N < ArgList::MAX_PACKED_ARGS)>
 struct ArgArray;
 
-template <unsigned N>
+template <std::size_t N>
 struct ArgArray<N, true/*IsPacked*/> {
   typedef Value Type[N > 0 ? N : 1];
 
@@ -2178,7 +2178,7 @@ struct ArgArray<N, true/*IsPacked*/> {
   }
 };
 
-template <unsigned N>
+template <std::size_t N>
 struct ArgArray<N, false/*IsPacked*/> {
   typedef Arg Type[N + 1]; // +1 for the list end Arg::NONE