File: vla_chrome_testcase.cc

package info (click to toggle)
llvm-toolchain-7 1%3A7.0.1-8~deb9u3
  • links: PTS, VCS
  • area: main
  • in suites: stretch
  • size: 733,456 kB
  • sloc: cpp: 3,776,651; ansic: 633,271; asm: 350,301; python: 142,716; objc: 107,612; sh: 22,626; lisp: 11,056; perl: 7,999; pascal: 6,742; ml: 5,537; awk: 3,536; makefile: 2,557; cs: 2,027; xml: 841; ruby: 156
file content (30 lines) | stat: -rw-r--r-- 717 bytes parent folder | download | duplicates (7)
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
// RUN: %clangxx_asan -O0 -mllvm -asan-instrument-dynamic-allocas %s -o %t
// RUN: not %run %t 2>&1 | FileCheck %s
//

// This is reduced testcase based on Chromium code.
// See http://reviews.llvm.org/D6055?vs=on&id=15616&whitespace=ignore-all#toc.

#include <stdint.h>
#include <assert.h>

int a = 7;
int b;
int c;
int *p;

__attribute__((noinline)) void fn3(int *first, int second) {
}

int main() {
  int d = b && c;
  int e[a]; // NOLINT
  assert(!(reinterpret_cast<uintptr_t>(e) & 31L));
  int f;
  if (d)
    fn3(&f, sizeof 0 * (&c - e));
  e[a] = 0;
// CHECK: ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
// CHECK: WRITE of size 4 at [[ADDR]] thread T0
  return 0;
}