1// RUN: %clangxx_hwasan -O0 %s -o %t && %run %t
2
3#include <assert.h>
4#include <memory>
5#include <sanitizer/hwasan_interface.h>
6#include <set>
7#include <stdio.h>
8
9int main() {
10 auto p = std::make_unique<char>();
11 std::set<void *> ptrs;
12 for (unsigned i = 0;; ++i) {
13 void *ptr = __hwasan_tag_pointer(p.get(), i);
14 if (!ptrs.insert(ptr).second)
15 break;
16 fprintf(stderr, "%p, %u, %u\n", ptr, i, __hwasan_get_tag_from_pointer(ptr));
17 assert(__hwasan_get_tag_from_pointer(ptr) == i);
18 }
19#ifdef __x86_64__
20 assert(ptrs.size() == 8 || ptrs.size() == 64);
21#else
22 assert(ptrs.size() == 256);
23#endif
24}
25

source code of compiler-rt/test/hwasan/TestCases/tag-ptr.cpp