From 0fdb3bebee7e3fa98caf333239549b28717043a8 Mon Sep 17 00:00:00 2001
From: Roberto Raggi <roberto.raggi@nokia.com>
Date: Wed, 6 Jan 2010 12:16:11 +0100
Subject: [PATCH] Fixed crash when completing symbols without a valid context.
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Task-number: QTCREATORBUG-534
Reviewed-by: Thorbjørn Lindeijer <thorbjorn.lindeijer@nokia.com>
---
 src/libs/cplusplus/LookupContext.cpp | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/libs/cplusplus/LookupContext.cpp b/src/libs/cplusplus/LookupContext.cpp
index 507a5d99aa7..983a705e716 100644
--- a/src/libs/cplusplus/LookupContext.cpp
+++ b/src/libs/cplusplus/LookupContext.cpp
@@ -352,8 +352,10 @@ QList<Scope *> LookupContext::visibleScopes(const QPair<FullySpecifiedType, Symb
 QList<Scope *> LookupContext::visibleScopes(Symbol *symbol) const
 {
     QList<Scope *> scopes;
-    for (Scope *scope = symbol->scope(); scope; scope = scope->enclosingScope())
-        scopes.append(scope);
+    if (symbol) {
+        for (Scope *scope = symbol->scope(); scope; scope = scope->enclosingScope())
+            scopes.append(scope);
+    }
     scopes += visibleScopes();
     scopes = expand(scopes);
     return scopes;