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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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/* PR middle-end/34134 */
/* { dg-require-effective-target alloca } */

extern void bar (void *, int);

int foo (int i)
{
  char *p = __builtin_stack_save ();
  void *q = __builtin_alloca (i);
  bar (q, i);
  __builtin_stack_restore (p);
  bar ("", 0);
  return 6;
}