From 600641c4c51ab051fc0d5820213cf29b2c010b2f Mon Sep 17 00:00:00 2001
From: Alexander Mai <amai@users.sf.net>
Date: Wed, 14 Oct 2015 20:34:55 +0200
Subject: [PATCH] #7043 segmentation fault (invalid code) in
 Tokenizer::simplifyVarDecl

---
 lib/tokenize.cpp     | 2 ++
 test/testgarbage.cpp | 5 +++++
 2 files changed, 7 insertions(+)

diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 0f38f275f..cc02cb028 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -5299,6 +5299,8 @@ void Tokenizer::simplifyVarDecl(Token * tokBegin, Token * tokEnd, bool only_k_r_
             tok = tok->link();
         }
 
+        if (!tok)
+            syntaxError(nullptr); // #7043 invalid code
         if (tok->previous() && !Token::Match(tok->previous(), "{|}|;|)|public:|protected:|private:"))
             continue;
 
diff --git a/test/testgarbage.cpp b/test/testgarbage.cpp
index d77d32c31..9f344446a 100644
--- a/test/testgarbage.cpp
+++ b/test/testgarbage.cpp
@@ -190,6 +190,7 @@ private:
         TEST_CASE(garbageCode138); // #6660
         TEST_CASE(garbageCode139); // #6659
         TEST_CASE(garbageCode140); // #7035
+        TEST_CASE(garbageCode141); // #7043
 
         TEST_CASE(garbageValueFlow);
         TEST_CASE(garbageSymbolDatabase);
@@ -1109,6 +1110,10 @@ private:
         ASSERT_THROW(checkCode("int foo(int align) { int off(= 0 % align;  return off) ? \\ align - off  :  0;  \\ }"), InternalError);
     }
 
+    void garbageCode141() { // #7043
+        ASSERT_THROW(checkCode("enum { X = << { X } } enum { X = X } = X ;"), InternalError);
+    }
+
 
     void garbageValueFlow() {
         // #6089