diff --git a/lib/checkclass.cpp b/lib/checkclass.cpp
index bf6903d38..df349f32b 100644
--- a/lib/checkclass.cpp
+++ b/lib/checkclass.cpp
@@ -499,7 +499,19 @@ void CheckClass::createSymbolDatabase()
 
         // not in SpaceInfo
         else
+        {
+            // found a "?" skip until the end of statement is found to avoid detecting
+            // false functions..
+            if (tok->str() == "?")
+            {
+                while (tok && !Token::Match(tok, "[;{}]"))
+                    tok = tok->next();
+                if (!tok)
+                    break;
+            }
+
             addIfFunction(&info, &tok);
+        }
     }
 
     std::list<SpaceInfo *>::iterator it;
diff --git a/test/testclass.cpp b/test/testclass.cpp
index eb6c66e63..4d9489c04 100644
--- a/test/testclass.cpp
+++ b/test/testclass.cpp
@@ -167,6 +167,7 @@ private:
         TEST_CASE(symboldatabase2);
         TEST_CASE(symboldatabase3); // ticket #2000
         TEST_CASE(symboldatabase4);
+        TEST_CASE(symboldatabase5); // ticket #2178
     }
 
     // Check the operator Equal
@@ -4796,6 +4797,15 @@ private:
                    "}\n");
         ASSERT_EQUALS("", errout.str());
     }
+
+    void symboldatabase5()
+    {
+        // ticket #2178 - segmentation fault
+        checkConst("int CL_INLINE_DECL(integer_decode_float) (int x) {\n"
+                   "    return (sign ? cl_I() : 0);\n"
+                   "}\n");
+        ASSERT_EQUALS("", errout.str());
+    }
 };
 
 REGISTER_TEST(TestClass)