From 8c8f3e30b56175967c5fb91b0cde89c7f66dc75c Mon Sep 17 00:00:00 2001
From: David Schulz <david.schulz@qt.io>
Date: Tue, 6 Dec 2022 09:47:18 +0100
Subject: [PATCH] LanguageClient: Fix handling of defective language server

If the language server cannot be started, the client might be already in
an error state before the language server gets initialized.

Change-Id: Ib6c9df13b381e7854806714c07f4830796bb2cd3
Reviewed-by: Marcus Tillmanns <marcus.tillmanns@qt.io>
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
---
 src/plugins/languageclient/languageclientmanager.cpp | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/plugins/languageclient/languageclientmanager.cpp b/src/plugins/languageclient/languageclientmanager.cpp
index 60468ff12de..7f50391ea1f 100644
--- a/src/plugins/languageclient/languageclientmanager.cpp
+++ b/src/plugins/languageclient/languageclientmanager.cpp
@@ -113,6 +113,8 @@ void LanguageClientManager::clientStarted(Client *client)
     qCDebug(Log) << "client started: " << client->name() << client;
     QTC_ASSERT(managerInstance, return);
     QTC_ASSERT(client, return);
+    if (client->state() != Client::Uninitialized) // do not proceed if we already received an error
+        return;
     if (g_shuttingDown) {
         clientFinished(client);
         return;