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