/* This testcase is part of GDB, the GNU debugger. Copyright 2013-2015 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see . */ #if 0 # define HEADER 1 #endif #if 1 # undef HEADER # define HEADER 2 void header_two_func (void) {} #endif #if 0 /* #include "header.h" does not work, why? */ # include #endif