| // checking for extern template extension |
| |
| /*************************************************************************** |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed |
| * with this work for additional information regarding copyright |
| * ownership. The ASF licenses this file to you under the Apache |
| * License, Version 2.0 (the License); you may not use this file |
| * except in compliance with the License. You may obtain a copy of |
| * the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or |
| * implied. See the License for the specific language governing |
| * permissions and limitations under the License. |
| * |
| * Copyright 1999-2007 Rogue Wave Software, Inc. |
| * |
| **************************************************************************/ |
| |
| // include a file containing the definition of a template |
| // and an extern template directive referencing an explicit |
| // instantiation of the same template in extern_template_imp.o |
| |
| #include "extern_template_imp.h" |
| |
| // establish a dependency on extern_template_imp.o to make sure |
| // the extern_template_imp.cpp is compiled before this file |
| #ifndef _RWSTD_NO_extern_template_imp |
| |
| // link with the object file below |
| // LDOPTS = extern_template_imp.o |
| |
| #endif // _RWSTD_NO_extern_template_imp |
| |
| int main () |
| { |
| // each of the member function of S<int> is defined to return 1 |
| // when explicitly instantiated in extern_template_imp.cpp but |
| // to return 0 when #included here |
| |
| S<int> s; |
| |
| int res = 0; |
| |
| // verify that calls to inline member functions defined in |
| // the body of the template, inline member functions defined |
| // outside the body of the template, and out-of-line member |
| // functions all compile and link |
| res += s.foo (); |
| res += s.bar (); |
| res += s.baz (); |
| |
| // verify that the calls ultimately resolve to the definition |
| // emitted by the explicit instantiation in extern_template_imp.o |
| // and not the one here |
| return !(3 == res); |
| } |