32 lines · cpp
1// Test for __lsan_(un)register_root_region().2// RUN: %clangxx_lsan %s -o %t3// RUN: %env_lsan_opts=use_stacks=0:use_registers=0 %run %t4// RUN: %env_lsan_opts=use_stacks=0:use_registers=0 not %run %t foo 2>&1 | FileCheck %s5// RUN: %env_lsan_opts=use_stacks=0:use_registers=0:use_root_regions=0 not %run %t 2>&1 | FileCheck %s6 7#include <assert.h>8#include <stdio.h>9#include <stdlib.h>10#include <sys/mman.h>11#include <unistd.h>12 13#include <sanitizer/lsan_interface.h>14 15int main(int argc, char *argv[]) {16 size_t size = getpagesize() * 2;17 void *p =18 mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0);19 assert(p);20 // Make half of the memory inaccessible. LSan must not crash trying to read it.21 assert(0 == mprotect((char *)p + size / 2, size / 2, PROT_NONE));22 23 __lsan_register_root_region(p, size);24 *((void **)p) = malloc(1337);25 fprintf(stderr, "Test alloc: %p.\n", p);26 if (argc > 1)27 __lsan_unregister_root_region(p, size);28 return 0;29}30// CHECK: Test alloc: [[ADDR:.*]].31// CHECK: SUMMARY: {{.*}}Sanitizer: 1337 byte(s) leaked in 1 allocation(s)32