From 144194b79aaa705529ec4d550e9869db5aa5436f Mon Sep 17 00:00:00 2001
From: Cristian Adam <cristian.adam@qt.io>
Date: Thu, 7 Dec 2023 12:01:55 +0100
Subject: [PATCH] CMakePM: Fix crash when editing CMake files without a project
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Fixes: QTCREATORBUG-30023
Change-Id: Id849635dd0e7437d7ae93251130d2f26ded24def
Reviewed-by: Kai Köhne <kai.koehne@qt.io>
---
 src/plugins/cmakeprojectmanager/cmakefilecompletionassist.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/plugins/cmakeprojectmanager/cmakefilecompletionassist.cpp b/src/plugins/cmakeprojectmanager/cmakefilecompletionassist.cpp
index 6dc754d2bed..2f7313c4a45 100644
--- a/src/plugins/cmakeprojectmanager/cmakefilecompletionassist.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakefilecompletionassist.cpp
@@ -314,7 +314,9 @@ static void updateCMakeConfigurationWithLocalData(CMakeConfig &cmakeCache,
         return var == "CMAKE_PREFIX_PATH" || var == "CMAKE_MODULE_PATH";
     };
 
-    const FilePath projectDir = ProjectTree::currentBuildSystem()->projectDirectory();
+    const FilePath projectDir = ProjectTree::currentBuildSystem()
+                                    ? ProjectTree::currentBuildSystem()->projectDirectory()
+                                    : currentDir;
     auto updateDirVariables = [currentDir, projectDir, cmakeCache](QByteArray &value) {
         value.replace("${CMAKE_CURRENT_SOURCE_DIR}", currentDir.path().toUtf8());
         value.replace("${CMAKE_CURRENT_LIST_DIR}", currentDir.path().toUtf8());