From 82de20ee1427d576a9ae06eeaaae5bd012240a96 Mon Sep 17 00:00:00 2001
From: David Gauchard <gauchard@laas.fr>
Date: Wed, 1 May 2024 13:59:55 +0200
Subject: [PATCH] Make string support even more generic

Ported from 57354de8317fdb07d09ae8b76786c1aeff94c2a4
Closes #2084
---
 CHANGELOG.md                             | 1 +
 src/ArduinoJson/Strings/StringTraits.hpp | 7 +++----
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index a04c48bd..d2c79b10 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,6 +3,7 @@ ArduinoJson: change log
 
 * Add `ARDUINOJSON_STRING_LENGTH_SIZE` to the namespace name
 * Add MsgPack bin8/bin16/bin32 support (PR #2078 by @Sanae6)
+* Make string support even more generic (PR #2084 by @d-a-v)
 
 v7.0.4 (2024-03-12)
 ------
diff --git a/src/ArduinoJson/Strings/StringTraits.hpp b/src/ArduinoJson/Strings/StringTraits.hpp
index b66ce616..530dc6d3 100644
--- a/src/ArduinoJson/Strings/StringTraits.hpp
+++ b/src/ArduinoJson/Strings/StringTraits.hpp
@@ -38,16 +38,15 @@ struct has_data<T,
                                            const char*>::value>::type>
     : true_type {};
 
-// size_t length() const
+// unsigned int length() const
 // - String
 
 template <class T, class = void>
 struct has_length : false_type {};
 
 template <class T>
-struct has_length<
-    T, typename enable_if<
-           is_same<decltype(declval<const T>().length()), size_t>::value>::type>
+struct has_length<T, typename enable_if<is_unsigned<
+                         decltype(declval<const T>().length())>::value>::type>
     : true_type {};
 
 // size_t size() const