1 | // RUN: %clangxx_hwasan %s -o %t && %run %t 2>&1 |
2 | |
3 | #include <sanitizer/hwasan_interface.h> |
4 | #include <stdio.h> |
5 | #include <stdlib.h> |
6 | #include <string.h> |
7 | |
8 | // Regression test for https://reviews.llvm.org/D107938#2961070, where, on |
9 | // reusing an allocation, we forgot to reset the short granule tag if the |
10 | // allocator was disabled. This lead to a false positive magic-string mismatch. |
11 | |
12 | int main() { |
13 | void *p = malloc(size: 16); |
14 | memset(s: p, c: 0xff, n: 16); |
15 | free(ptr: p); |
16 | |
17 | // Relies on the LRU cache immediately recycling the allocation above. |
18 | p = malloc(size: 8); |
19 | free(ptr: p); // Regression was here, in the magic-string check in the runtime. |
20 | return 0; |
21 | } |
22 | |