xref: /netbsd-src/external/gpl3/gdb.old/dist/gdb/testsuite/gdb.base/vla-optimized-out.c (revision d16b7486a53dcb8072b60ec6fcb4373a2d0c27b7)
1 /* This testcase is part of GDB, the GNU debugger.
2 
3    Copyright 2018-2020 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 /* The version of this test-case with f1 tagged with noinline only is equivalent
19    to gcc/testsuite/gcc.dg/guality/vla-1.c.  */
20 
21 int
22 #ifdef NOCLONE
23 __attribute__((noinline, noclone))
24 #else
25 __attribute__((noinline))
26 #endif
27 f1 (int i)
28 {
29   char a[i + 1];
30   a[0] = 5;
31   return a[0];
32 }
33 
34 int
35 main (void)
36 {
37   volatile int j;
38   int i = 5;
39   asm volatile ("" : "=r" (i) : "0" (i));
40   j = f1 (i);
41   return 0;
42 }
43