gdb/testsuite/gdb.compile/compile-ifunc.c

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2015-2018 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 typedef int (*final_t) (int arg);
  21
  22 int
  23 final (int arg)
  24 {
  25   return arg + 1;
  26 }
  27
  28 asm (".type gnu_ifunc, %gnu_indirect_function");
  29
  30 final_t
  31 gnu_ifunc (void)
  32 {
  33   return final;
  34 }
  35
  36 extern int gnu_ifunc_alias (int arg) __attribute__ ((alias ("gnu_ifunc")));
  37
  38 static int resultvar;
  39
  40 int
  41 main (void)
  42 {
  43   if (gnu_ifunc_alias (10) != 11)
  44     abort ();
  45   return resultvar;
  46 }