| // Test for __lsan_(un)register_root_region(). |
| // RUN: LSAN_BASE="use_stacks=0:use_registers=0" |
| // RUN: %clangxx_lsan %s -o %t |
| // RUN: %env_lsan_opts=$LSAN_BASE %run %t |
| // RUN: %env_lsan_opts=$LSAN_BASE not %run %t foo 2>&1 | FileCheck %s |
| // RUN: %env_lsan_opts=$LSAN_BASE:use_root_regions=0 not %run %t 2>&1 | FileCheck %s |
| |
| #include <assert.h> |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/mman.h> |
| #include <unistd.h> |
| |
| #include <sanitizer/lsan_interface.h> |
| |
| int main(int argc, char *argv[]) { |
| size_t size = getpagesize() * 2; |
| void *p = |
| mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0); |
| assert(p); |
| // Make half of the memory inaccessible. LSan must not crash trying to read it. |
| assert(0 == mprotect((char *)p + size / 2, size / 2, PROT_NONE)); |
| |
| __lsan_register_root_region(p, size); |
| *((void **)p) = malloc(1337); |
| fprintf(stderr, "Test alloc: %p.\n", p); |
| if (argc > 1) |
| __lsan_unregister_root_region(p, size); |
| return 0; |
| } |
| // CHECK: Test alloc: [[ADDR:.*]]. |
| // CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer: 1337 byte(s) leaked in 1 allocation(s) |