From b9c9c37a515f9dd79fa4e9e6c8c0168d76e6d5e3 Mon Sep 17 00:00:00 2001
From: Christian Kandeler <christian.kandeler@qt.io>
Date: Wed, 2 Jun 2021 16:24:33 +0200
Subject: [PATCH] CppTools: Add missing null pointer check

Prevents a crash trying to look for decl/def matches in non-applicable
locations.

Fixes: QTCREATORBUG-25806
Change-Id: I70961109267a2955bef0434a92f1d913b8c0c9c1
Reviewed-by: Christian Stenger <christian.stenger@qt.io>
---
 src/plugins/cpptools/symbolfinder.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/plugins/cpptools/symbolfinder.cpp b/src/plugins/cpptools/symbolfinder.cpp
index 0c0c1f3d15a..7147f1d1c41 100644
--- a/src/plugins/cpptools/symbolfinder.cpp
+++ b/src/plugins/cpptools/symbolfinder.cpp
@@ -436,6 +436,9 @@ QList<Declaration *> SymbolFinder::findMatchingDeclaration(const LookupContext &
                                                            Function *functionType)
 {
     QList<Declaration *> result;
+    if (!functionType)
+        return result;
+
     QList<Declaration *> nameMatch, argumentCountMatch, typeMatch;
     findMatchingDeclaration(context, functionType, &typeMatch, &argumentCountMatch, &nameMatch);
     result.append(typeMatch);