433b2eaf91
Fixes a regression when the allocator is disabled, and a dirty allocation is re-used. This only occurs when the allocator is disabled, so a test-only fix, but still necessary. Reviewed By: eugenis Differential Revision: https://reviews.llvm.org/D108650
22 lines
633 B
C++
22 lines
633 B
C++
// RUN: %clangxx_hwasan %s -o %t && %run %t 2>&1
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#include <sanitizer/hwasan_interface.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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// Regression test for https://reviews.llvm.org/D107938#2961070, where, on
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// reusing an allocation, we forgot to reset the short granule tag if the
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// allocator was disabled. This lead to a false positive magic-string mismatch.
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int main() {
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void *p = malloc(16);
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memset(p, 0xff, 16);
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free(p);
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// Relies on the LRU cache immediately recycling the allocation above.
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p = malloc(8);
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free(p); // Regression was here, in the magic-string check in the runtime.
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return 0;
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}
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