From df4b68247456bc3a9e5301d95289c891b14bf7ac Mon Sep 17 00:00:00 2001
From: Christian Kandeler <christian.kandeler@qt.io>
Date: Mon, 17 May 2021 16:48:18 +0200
Subject: [PATCH] CppTools: Default to latest language version for files
 without project

Some compilers have outdated defaults; e.g. the current Apple clang on
my test machine sets __cplusplus to 199711L (whereas earlier releases
already used 201402L ...).
Amends 9c3420120e.

Change-Id: I8708b41f6d616ca0f1b73f72473f4612e463bff6
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
---
 src/plugins/cpptools/cppmodelmanager.cpp | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/plugins/cpptools/cppmodelmanager.cpp b/src/plugins/cpptools/cppmodelmanager.cpp
index 2bbb17de384..ea899371895 100644
--- a/src/plugins/cpptools/cppmodelmanager.cpp
+++ b/src/plugins/cpptools/cppmodelmanager.cpp
@@ -1293,6 +1293,10 @@ ProjectPart::Ptr CppModelManager::fallbackProjectPart()
         defaultKit->addToEnvironment(env);
         ToolChainInfo tcInfo(defaultTc, sysroot.toString(), env);
         part->setupToolchainProperties(tcInfo, {});
+        if (part->language == Language::C)
+            part->languageVersion = Utils::LanguageVersion::LatestC;
+        else
+            part->languageVersion = Utils::LanguageVersion::LatestCxx;
     }
     part->updateLanguageFeatures();