17 lines · cpp
1// RUN: %clang_cc1 -fsyntax-only -Wundefined-internal -verify %s2 3void test1() {4 struct S { virtual void f(); };5 // expected-warning@-1{{function 'test1()::S::f' has internal linkage but is not defined}}6 S s;7 // expected-note@-1{{used here}}8}9 10void test2() {11 struct S;12 struct S { virtual void f(); };13 // expected-warning@-1{{function 'test2()::S::f' has internal linkage but is not defined}}14 S s;15 // expected-note@-1{{used here}}16}17