Add test

Author: ludviggunne

test/testclass.cpp

@@ -195,6 +195,7 @@ class TestClass : public TestFixture {
         TEST_CASE(const98);
         TEST_CASE(const99);
         TEST_CASE(const100);
+        TEST_CASE(const101);
 
         TEST_CASE(const_handleDefaultParameters);
         TEST_CASE(const_passThisToMemberOfOtherClass);
@@ -6972,6 +6973,16 @@ class TestClass : public TestFixture {
         ASSERT_EQUALS("", errout_str()); // don't crash
     }
 
+    void const101() {
+        checkConst("struct error {\n"
+                   "    error() = default;\n"
+                   "};\n"
+                   "struct S : U {\n"
+                   "    int f() { return this->error(); }\n"
+                   "};\n");
+        ASSERT_EQUALS("", errout_str());
+    }
+
     void const_handleDefaultParameters() {
         checkConst("struct Foo {\n"
                    "    void foo1(int i, int j = 0) {\n"