File: max_redzone.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 (26 lines) | stat: -rw-r--r-- 840 bytes parent folder | download | duplicates (36) 
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
 
// Test max_redzone runtime option.

// RUN: %clangxx_asan -O0 %s -o %t && %env_asan_opts=max_redzone=32 %run %t 0 2>&1
// RUN: %clangxx_asan -O0 %s -o %t && %run %t 1 2>&1
// RUN: %clangxx_asan -O3 %s -o %t && %env_asan_opts=max_redzone=32 %run %t 0 2>&1
// RUN: %clangxx_asan -O3 %s -o %t && %run %t 1 2>&1

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <sanitizer/allocator_interface.h>

int main(int argc, char **argv) {
  if (argc < 2)
    return 1;
  bool large_redzone = atoi(argv[1]);
  size_t before = __sanitizer_get_heap_size();
  void *pp[10000];
  for (int i = 0; i < 10000; ++i)
    pp[i] = malloc(4096 - 64);
  size_t after = __sanitizer_get_heap_size();
  for (int i = 0; i < 10000; ++i)
    free(pp[i]);
  size_t diff = after - before;
  return !(large_redzone ? diff > 46000000 : diff < 46000000);
}