1 /* This testcase is part of GDB, the GNU debugger. 2 3 Copyright 2013-2019 Free Software Foundation, Inc. 4 5 This program is free software; you can redistribute it and/or modify 6 it under the terms of the GNU General Public License as published by 7 the Free Software Foundation; either version 3 of the License, or 8 (at your option) any later version. 9 10 This program is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13 GNU General Public License for more details. 14 15 You should have received a copy of the GNU General Public License 16 along with this program. If not, see <http://www.gnu.org/licenses/>. */ 17 18 #include <stdlib.h> 19 20 volatile int v = 1; 21 22 static __attribute__ ((noinline, noclone, noreturn)) void 23 noret (int x, ...) 24 { 25 abort (); 26 } 27 28 static __attribute__ ((noinline, noclone)) void 29 mayret (int x) 30 { 31 if (v) 32 noret (x); 33 } 34 35 static __attribute__ ((noinline, noclone)) void 36 tailcall (int x) 37 { 38 mayret (x); 39 } 40 41 int 42 main (void) 43 { 44 tailcall (1); 45 return 0; 46 } 47