File: overflow.c

package info (click to toggle)
llvm-toolchain-15 1%3A15.0.6-4
  • links: PTS, VCS
  • area: main
  • in suites: bookworm
  • size: 1,554,644 kB
  • sloc: cpp: 5,922,452; ansic: 1,012,136; asm: 674,362; python: 191,568; objc: 73,855; f90: 42,327; lisp: 31,913; pascal: 11,973; javascript: 10,144; sh: 9,421; perl: 7,447; ml: 5,527; awk: 3,523; makefile: 2,520; xml: 885; cs: 573; fortran: 567
file content (37 lines) | stat: -rw-r--r-- 946 bytes parent folder | download | duplicates (27) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
 
// Test that a stack overflow fails as expected

// RUN: %clang_noscs %s -o %t -DITERATIONS=3
// RUN: %run %t | FileCheck %s
// RUN: %clang_noscs %s -o %t -DITERATIONS=12
// RUN: %run %t | FileCheck -check-prefix=OVERFLOW_SUCCESS %s

// RUN: %clang_scs %s -o %t -DITERATIONS=3
// RUN: %run %t | FileCheck %s

// On aarch64 we just load the return address from the shadow call stack so we
// do not expect to see the output from print_and_exit.
// RUN: %clang_scs %s -o %t -DITERATIONS=12
// RUN: %run %t | FileCheck %S/overflow.c

#include <stdio.h>
#include <stdlib.h>

#include "minimal_runtime.h"

void print_and_exit(void) {
// CHECK-NOT: Stack overflow successful.
// OVERFLOW_SUCCESS: Stack overflow successful.
  scs_fputs_stdout("Stack overflow successful.\n");
  exit(0);
}

int scs_main(void)
{
  void *addrs[4];
  for (int i = 0; i < ITERATIONS; i++)
    addrs[i] = &print_and_exit;

  scs_fputs_stdout("Returning.\n");

  return 0;
}