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

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2012-2022 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 volatile int v;
  19
  20 static __attribute__ ((noinline, noclone)) void
  21 g (void)
  22 {
  23   v = 2;
  24 }
  25
  26 static __attribute__ ((noinline, noclone)) void
  27 f (void)
  28 {
  29   g ();
  30 }
  31
  32 int
  33 main (void)
  34 {
  35   f (); /* first */
  36   f (); /* second */
  37   v = 3;
  38   return 0;
  39 }