From b7f9e7ed1decbdeba42309f8fd5f3388998edd80 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Daniel=20Marjam=C3=A4ki?= <daniel.marjamaki@gmail.com>
Date: Tue, 22 Aug 2017 12:30:43 +0200
Subject: [PATCH] negativeContainerIndex: avoid crash when AST is wrong

---
 lib/checkstl.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/checkstl.cpp b/lib/checkstl.cpp
index f06d225ae..370448bde 100644
--- a/lib/checkstl.cpp
+++ b/lib/checkstl.cpp
@@ -446,7 +446,7 @@ void CheckStl::negativeIndex()
     for (std::size_t ii = 0; ii < functions; ++ii) {
         const Scope * scope = symbolDatabase->functionScopes[ii];
         for (const Token* tok = scope->classStart->next(); tok != scope->classEnd; tok = tok->next()) {
-            if (!Token::Match(tok, "%var% ["))
+            if (!Token::Match(tok, "%var% [") || WRONG_DATA(!tok->next()->astOperand2(), tok))
                 continue;
             const Variable * const var = tok->variable();
             if (!var || tok == var->nameToken())