File: malloc_fill.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 (22 lines) | stat: -rw-r--r-- 910 bytes parent folder | download | duplicates (41) 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
 
// Check that we fill malloc-ed memory correctly.
// RUN: %clangxx_asan %s -o %t
// RUN: %run %t | FileCheck %s
// RUN: %env_asan_opts=max_malloc_fill_size=10:malloc_fill_byte=8 %run %t | FileCheck %s --check-prefix=CHECK-10-8
// RUN: %env_asan_opts=max_malloc_fill_size=20:malloc_fill_byte=171 %run %t | FileCheck %s --check-prefix=CHECK-20-ab

#include <stdio.h>
int main(int argc, char **argv) {
  // With asan allocator this makes sure we get memory from mmap.
  static const int kSize = 1 << 25;
  unsigned char *x = new unsigned char[kSize];
  printf("-");
  for (int i = 0; i <= 32; i++) {
    printf("%02x", x[i]);
  }
  printf("-\n");
  delete [] x;
}

// CHECK: -bebebebebebebebebebebebebebebebebebebebebebebebebebebebebebebebebe-
// CHECK-10-8: -080808080808080808080000000000000000000000000000000000000000000000-
// CHECK-20-ab: -abababababababababababababababababababab00000000000000000000000000-