From 75da9f0a9444761c891c2c4291587619ccfb3fcd Mon Sep 17 00:00:00 2001
From: Vicki Pfau <vi@endrift.com>
Date: Wed, 19 Oct 2022 04:33:03 -0700
Subject: [PATCH] Qt: Fix Discord Rich Presence if the game title is
 excessively, extremely, overly, ridiculously, very very long (fixes #2697)

---
 src/platform/qt/DiscordCoordinator.cpp | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/src/platform/qt/DiscordCoordinator.cpp b/src/platform/qt/DiscordCoordinator.cpp
index b090863cd..72ca4cc1b 100644
--- a/src/platform/qt/DiscordCoordinator.cpp
+++ b/src/platform/qt/DiscordCoordinator.cpp
@@ -22,7 +22,7 @@ namespace DiscordCoordinator {
 
 static bool s_gameRunning = false;
 static bool s_inited = false;
-static QString s_title;
+static QByteArray s_title;
 
 static void updatePresence() {
 	if (!s_inited) {
@@ -30,7 +30,7 @@ static void updatePresence() {
 	}
 	if (s_gameRunning) {
 		DiscordRichPresence discordPresence{};
-		discordPresence.details = s_title.toUtf8().constData();
+		discordPresence.details = s_title.constData();
 		discordPresence.instance = 1;
 		discordPresence.largeImageKey = "mgba";
 #if (QT_VERSION >= QT_VERSION_CHECK(5, 8, 0))
@@ -74,8 +74,10 @@ void gameStarted(std::shared_ptr<CoreController> controller) {
 	s_title = controller->thread()->core->dirs.baseName;
 	QString dbTitle = controller->dbTitle();
 	if (!dbTitle.isNull()) {
-		s_title = dbTitle;
+		s_title = dbTitle.toUtf8();
 	}
+	// Non-const QByteArrays are null-terminated so we don't need to append null even after truncation
+	s_title.truncate(128);
 	updatePresence();
 }