From 70a32fc2458cd4e49b3310d67c5df0ad2538a105 Mon Sep 17 00:00:00 2001
From: Robert Reif <reif@earthlink.net>
Date: Tue, 28 Jun 2011 18:47:18 -0400
Subject: [PATCH] fix #2875 (segmentation fault of cppcheck ( 0; (a) < (a) ))

---
 lib/tokenize.cpp      | 2 +-
 test/testtokenize.cpp | 7 +++++++
 2 files changed, 8 insertions(+), 1 deletion(-)

diff --git a/lib/tokenize.cpp b/lib/tokenize.cpp
index 0d0ddd9ec..402b9f734 100644
--- a/lib/tokenize.cpp
+++ b/lib/tokenize.cpp
@@ -3682,7 +3682,7 @@ void Tokenizer::setVarId()
                     if (tok2 && tok2->str() == "(")
                     {
                         tok2 = tok2->link()->next();
-                        if (tok2->str() == "(")
+                        if (tok2 && tok2->str() == "(")
                             tok2 = tok2->link()->next();
                         again = true;
                     }
diff --git a/test/testtokenize.cpp b/test/testtokenize.cpp
index e50553e60..4a52c0426 100644
--- a/test/testtokenize.cpp
+++ b/test/testtokenize.cpp
@@ -177,6 +177,7 @@ private:
         TEST_CASE(varid30);   // ticket #2614
         TEST_CASE(varid31);   // ticket #2831 (segmentation fault)
         TEST_CASE(varid32);   // ticket #2835 (segmentation fault)
+        TEST_CASE(varid33);   // ticket #2875 (segmentation fault)
         TEST_CASE(varidFunctionCall1);
         TEST_CASE(varidFunctionCall2);
         TEST_CASE(varidFunctionCall3);
@@ -2954,6 +2955,12 @@ private:
         ASSERT_EQUALS("", errout.str());
     }
 
+    void varid33()   // ticket #2875 (segmentation fault)
+    {
+        const std::string code("0; (a) < (a)");
+        ASSERT_EQUALS("", errout.str());
+    }
+
     void varidFunctionCall1()
     {
         const std::string code("void f() {\n"