Fixed #2129 (Invalid dereference after release report)

lib/checkmemoryleak.cpp

@@ -676,7 +676,16 @@ const char * CheckMemoryLeakInFunction::call_func(const Token *tok, std::list<co
             return 0;
         }
 
-        return "use_";
+        // is the varid a parameter?
+        for (const Token *tok2 = tok->tokAt(2); tok2; tok2 = tok2->next())
+        {
+            if (tok2->str() == "(" || tok2->str() == ")")
+                break;
+            if (tok2->varId() == varid)
+                return "use_";
+        }
+
+        return 0;
     }
 
     if (noreturn.find(tok->str()) != noreturn.end())

test/testmemleak.cpp

@@ -2280,6 +2280,13 @@ private:
               "    strcpy(str, p);\n"
               "}\n");
         ASSERT_EQUALS("[test.cpp:4]: (error) Dereferencing 'str' after it is deallocated / released\n", errout.str());
+
+        check("void foo(int x) {\n"
+              "    char *str = malloc(10);\n"
+              "    free(str);\n"
+              "    assert(x);\n"
+              "}\n");
+        ASSERT_EQUALS("", errout.str());
     }