1 // Test that a stack overflow fails as expected
2
3 // RUN: %clang_noscs %s -o %t -DITERATIONS=3
4 // RUN: %run %t | FileCheck %s
5 // RUN: %clang_noscs %s -o %t -DITERATIONS=12
6 // RUN: %run %t | FileCheck -check-prefix=OVERFLOW_SUCCESS %s
7
8 // RUN: %clang_scs %s -o %t -DITERATIONS=3
9 // RUN: %run %t | FileCheck %s
10
11 // On aarch64 we just load the return address from the shadow call stack so we
12 // do not expect to see the output from print_and_exit.
13 // RUN: %clang_scs %s -o %t -DITERATIONS=12
14 // RUN: %run %t | FileCheck %S/overflow.c
15
16 #include <stdio.h>
17 #include <stdlib.h>
18
19 #include "minimal_runtime.h"
20
print_and_exit(void)21 void print_and_exit(void) {
22 // CHECK-NOT: Stack overflow successful.
23 // OVERFLOW_SUCCESS: Stack overflow successful.
24 scs_fputs_stdout("Stack overflow successful.\n");
25 exit(0);
26 }
27
scs_main(void)28 int scs_main(void)
29 {
30 void *addrs[4];
31 for (int i = 0; i < ITERATIONS; i++)
32 addrs[i] = &print_and_exit;
33
34 scs_fputs_stdout("Returning.\n");
35
36 return 0;
37 }
38