gdb/testsuite/gdb.arch/amd64-tailcall-noret.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2013-2014 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 }