File: calloc_left_oob.cpp

package info (click to toggle)
llvm-toolchain-18 1%3A18.1.8-18
  • links: PTS, VCS
  • area: main
  • in suites: trixie
  • size: 1,908,340 kB
  • sloc: cpp: 6,667,937; ansic: 1,440,452; asm: 883,619; python: 230,549; objc: 76,880; f90: 74,238; lisp: 35,989; pascal: 16,571; sh: 10,229; perl: 7,459; ml: 5,047; awk: 3,523; makefile: 2,987; javascript: 2,149; xml: 892; fortran: 649; cs: 573
file content (17 lines) | stat: -rw-r--r-- 585 bytes parent folder | download | duplicates (4) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
 
// RUN: %clang_cl_asan %Od %s %Fe%t
// RUN: not %run %t 2>&1 | FileCheck %s

#include <malloc.h>

int main() {
  int *buffer = (int*)calloc(42, sizeof(int));
  buffer[-1] = 42;
// CHECK: AddressSanitizer: heap-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
// CHECK: WRITE of size 4 at [[ADDR]] thread T0
// CHECK-NEXT: {{#0 .* main .*calloc_left_oob.cpp}}:[[@LINE-3]]
// CHECK: [[ADDR]] is located 4 bytes before 168-byte region
// CHECK: allocated by thread T0 here:
// CHECK-NEXT: {{#0 .* calloc }}
// CHECK-NEXT: {{#1 .* main .*calloc_left_oob.cpp}}:[[@LINE-8]]
  free(buffer);
}