1 // Test for __lsan_(un)register_root_region(). 2 // RUN: LSAN_BASE="use_stacks=0:use_registers=0" 3 // RUN: %clangxx_lsan %s -o %t 4 // RUN: LSAN_OPTIONS=$LSAN_BASE %run %t 5 // RUN: LSAN_OPTIONS=$LSAN_BASE not %run %t foo 2>&1 | FileCheck %s 6 // RUN: LSAN_OPTIONS=$LSAN_BASE:use_root_regions=0 not %run %t 2>&1 | FileCheck %s 7 8 #include <assert.h> 9 #include <stdio.h> 10 #include <stdlib.h> 11 #include <sys/mman.h> 12 #include <unistd.h> 13 14 #include <sanitizer/lsan_interface.h> 15 16 int main(int argc, char *argv[]) { 17 size_t size = getpagesize() * 2; 18 void *p = 19 mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0); 20 assert(p); 21 // Make half of the memory inaccessible. LSan must not crash trying to read it. 22 assert(0 == mprotect((char *)p + size / 2, size / 2, PROT_NONE)); 23 24 __lsan_register_root_region(p, size); 25 *((void **)p) = malloc(1337); 26 fprintf(stderr, "Test alloc: %p.\n", p); 27 if (argc > 1) 28 __lsan_unregister_root_region(p, size); 29 return 0; 30 } 31 // CHECK: Test alloc: [[ADDR:.*]]. 32 // CHECK: SUMMARY: {{(Leak|Address)}}Sanitizer: 1337 byte(s) leaked in 1 allocation(s) 33
