| 1 | // Check that __asan_poison_memory_region works. |
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| 2 | // RUN: %clangxx_asan -O0 %s -o %t && not %run %t 2>&1 | FileCheck %s |
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| 3 | // |
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| 4 | // Check that we can disable it |
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| 5 | // RUN: %env_asan_opts=allow_user_poisoning=0 %run %t |
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| 6 | |
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| 7 | #include <stdlib.h> |
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| 8 | |
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| 9 | extern "C" void __asan_poison_memory_region(void *, size_t); |
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| 10 | |
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| 11 | int main(int argc, char **argv) { |
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| 12 | char *x = new char[16]; |
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| 13 | x[10] = 0; |
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| 14 | __asan_poison_memory_region(x, 16); |
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| 15 | int res = x[argc * 10]; // BOOOM |
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| 16 | // CHECK: ERROR: AddressSanitizer: use-after-poison |
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| 17 | // CHECK: main{{.*}}use-after-poison.cpp:[[@LINE-2]] |
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| 18 | delete [] x; |
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| 19 | return res; |
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| 20 | } |
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| 21 | |
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