From a3a292c2ba66bf09b4adc4cee8fcdfb1b1386067 Mon Sep 17 00:00:00 2001
From: Daniel Frey <d.frey@gmx.de>
Date: Mon, 11 May 2020 22:19:31 +0200
Subject: [PATCH] Repair warning from GCC 10

* Backported patch thx to Fedora.

---
 include/tao/pegtl/contrib/rep_one_min_max.hpp | 21 +++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/include/tao/pegtl/contrib/rep_one_min_max.hpp b/include/tao/pegtl/contrib/rep_one_min_max.hpp
index 7ec4639e..ee0a3782 100644
--- a/include/tao/pegtl/contrib/rep_one_min_max.hpp
+++ b/include/tao/pegtl/contrib/rep_one_min_max.hpp
@@ -45,6 +45,27 @@ namespace tao
             }
          };
 
+         template< unsigned Max, char C >
+         struct rep_one_min_max< 0, Max, C >
+         {
+            using analyze_t = analysis::counted< analysis::rule_type::any, 0 >;
+
+            template< typename Input >
+            static bool match( Input& in )
+            {
+               const auto size = in.size( Max + 1 );
+               std::size_t i = 0;
+               while( ( i < size ) && ( in.peek_char( i ) == C ) ) {
+                  ++i;
+               }
+               if( i <= Max ) {
+                  bump_help< result_on_found::success, Input, char, C >( in, i );
+                  return true;
+               }
+               return false;
+            }
+         };
+
          template< unsigned Min, unsigned Max, char C >
          inline constexpr bool enable_control< rep_one_min_max< Min, Max, C > > = false;