summaryrefslogtreecommitdiff
path: root/gdb/testsuite/gdb.base/vla-optimized-out.c
blob: edc2b5ec685684f5d6364dea4ed5f7b5d7bd2326 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
/* This testcase is part of GDB, the GNU debugger.

   Copyright 2018-2020 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/>.  */

/* The version of this test-case with f1 tagged with noinline only is equivalent
   to gcc/testsuite/gcc.dg/guality/vla-1.c.  */

int
#ifdef NOCLONE
__attribute__((noinline, noclone))
#else
__attribute__((noinline))
#endif
f1 (int i)
{
  char a[i + 1];
  a[0] = 5;
  return a[0];
}

int
main (void)
{
  volatile int j;
  int i = 5;
  asm volatile ("" : "=r" (i) : "0" (i));
  j = f1 (i);
  return 0;
}