clang-tests/gcc-4_2-testsuite/src/g++.dg/parse/ret-type2.C

struct S {} f(); // { dg-error "" }
struct T {} *g(); // { dg-error "" }
struct U {} h() {} // { dg-error "" }
struct V {} *i() {} // { dg-error "" }
struct W {} (*p) (); // { dg-error "" }