| /* This testcase is part of GDB, the GNU debugger. | |
| Copyright (C) 2018-2024 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 <http://www.gnu.org/licenses/>. */ | |
| enum cons_type | |
| { | |
| type_atom = 0, | |
| type_cons = 1 | |
| }; | |
| struct atom | |
| { | |
| int ival; | |
| }; | |
| struct cons | |
| { | |
| enum cons_type type; | |
| union | |
| { | |
| struct atom atom; | |
| struct cons *slots[2]; | |
| }; | |
| }; | |
| #define nil ((struct cons*)0); | |
| int | |
| main () | |
| { | |
| struct cons c1, c2, c3, c4; | |
| c1.type = type_cons; | |
| c1.slots[0] = &c4; | |
| c1.slots[1] = &c2; | |
| c2.type = type_cons; | |
| c2.slots[0] = nil; | |
| c2.slots[1] = &c3; | |
| c3.type = type_cons; | |
| c3.slots[0] = nil; | |
| c3.slots[1] = nil; | |
| c4.type = type_atom; | |
| c4.atom.ival = 13; | |
| return 0; /* next line */ | |
| } |