Fixed #3715 (false positive checking a map bounds)

lib/checkstl.cpp

@@ -272,6 +272,13 @@ void CheckStl::stlOutOfBounds()
                 // variable id for the container variable
                 unsigned int varId = tok2->tokAt(3)->varId();
 
+                // Is it a vector?
+                const Variable *container = symbolDatabase->getVariableFromVarId(varId);
+                if (!container)
+                    continue;
+                if (!Token::simpleMatch(container->typeStartToken(), "std :: vector <"))
+                    continue;
+
                 for (const Token *tok3 = tok2->tokAt(8); tok3 && tok3 != i->classEnd; tok3 = tok3->next()) {
                     if (tok3->varId() == varId) {
                         if (Token::simpleMatch(tok3->next(), ". size ( )"))

test/teststl.cpp

@@ -505,6 +505,15 @@ private:
                   "}\n");
             ASSERT_EQUALS("", errout.str());
         }
+
+        {
+            check("void f(const std::map<int,int> &data) {\n"
+                  "    int i = x;"
+                  "    for (int i = 5; i <= data.size(); i++)\n"
+                  "        data[i] = 0;\n"
+                  "}");
+            ASSERT_EQUALS("", errout.str());
+        }
     }