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// Test for __lsan_(un)register_root_region().
// RUN: LSAN_BASE="detect_leaks=1:use_stacks=0:use_registers=0"
// RUN: %clangxx_lsan %s -o %t
// RUN: LSAN_OPTIONS=$LSAN_BASE %run %t
// RUN: LSAN_OPTIONS=$LSAN_BASE not %run %t foo 2>&1 | FileCheck %s
// RUN: LSAN_OPTIONS=$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)
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