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comparison gcc/testsuite/gcc.dg/split-1.c @ 111:04ced10e8804

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gcc 7
author kono
date Fri, 27 Oct 2017 22:46:09 +0900
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68:561a7518be6b 111:04ced10e8804
1 /* This test needs to use setrlimit to set the stack size, so it can
2 only run on Unix. */
3 /* { dg-do run { target *-*-linux* *-*-gnu* *-*-solaris* *-*-darwin* } } */
4 /* { dg-require-effective-target split_stack } */
5 /* { dg-options "-fsplit-stack" } */
6
7 #include <stdlib.h>
8 #include <sys/types.h>
9 #include <sys/resource.h>
10
11 /* Use a noinline function to ensure that the buffer is not removed
12 from the stack. */
13 static void use_buffer (char *buf) __attribute__ ((noinline));
14 static void
15 use_buffer (char *buf)
16 {
17 buf[0] = '\0';
18 }
19
20 /* Each recursive call uses 10,000 bytes. We call it 1000 times,
21 using a total of 10,000,000 bytes. If -fsplit-stack is not
22 working, that will overflow our stack limit. */
23
24 static void
25 down (int i)
26 {
27 char buf[10000];
28
29 if (i > 0)
30 {
31 use_buffer (buf);
32 down (i - 1);
33 }
34 }
35
36 int
37 main (void)
38 {
39 struct rlimit r;
40
41 /* We set a stack limit because we are usually invoked via make, and
42 make sets the stack limit to be as large as possible. */
43 r.rlim_cur = 8192 * 1024;
44 r.rlim_max = 8192 * 1024;
45 if (setrlimit (RLIMIT_STACK, &r) != 0)
46 abort ();
47 down (1000);
48 return 0;
49 }