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/* This test needs to use setrlimit to set the stack size, so it can
only run on Unix. */
/* { dg-do run { target *-*-linux* *-*-solaris* *-*-darwin* } } */
/* { dg-require-effective-target split_stack } */
/* { dg-options "-fsplit-stack" } */
#include <stdlib.h>
#include <sys/types.h>
#include <sys/resource.h>
/* Use a noinline function to ensure that the buffer is not removed
from the stack. */
static void use_buffer (char *buf) __attribute__ ((noinline));
static void
use_buffer (char *buf)
{
buf[0] = '\0';
}
/* Each recursive call uses 10,000 bytes. We call it 1000 times,
using a total of 10,000,000 bytes. If -fsplit-stack is not
working, that will overflow our stack limit. */
static void
down (int i)
{
char buf[10000];
if (i > 0)
{
use_buffer (buf);
down (i - 1);
}
}
int
main (void)
{
struct rlimit r;
/* We set a stack limit because we are usually invoked via make, and
make sets the stack limit to be as large as possible. */
r.rlim_cur = 8192 * 1024;
r.rlim_max = 8192 * 1024;
if (setrlimit (RLIMIT_STACK, &r) != 0)
abort ();
down (1000);
return 0;
}
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