| 1 | // RUN: %clangxx_asan -O0 -mllvm -asan-instrument-dynamic-allocas %s -o %t |
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| 2 | // RUN: not %run %t 2>&1 | FileCheck %s |
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| 3 | // |
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| 4 | // REQUIRES: stable-runtime |
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| 5 | |
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| 6 | // MSVC doesn't support VLAs |
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| 7 | // UNSUPPORTED: msvc |
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| 8 | |
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| 9 | #include <assert.h> |
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| 10 | #include <stdint.h> |
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| 11 | |
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| 12 | void foo(int index, int len) { |
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| 13 | for (int i = 1; i < len; ++i) { |
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| 14 | char array[len]; |
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| 15 | assert(!(reinterpret_cast<uintptr_t>(array) & 31L)); |
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| 16 | array[index + i] = 0; |
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| 17 | // CHECK: ERROR: AddressSanitizer: dynamic-stack-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] |
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| 18 | // CHECK: WRITE of size 1 at [[ADDR]] thread T0 |
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| 19 | } |
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| 20 | } |
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| 21 | |
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| 22 | int main(int argc, char **argv) { |
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| 23 | foo(index: 9, len: 21); |
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| 24 | return 0; |
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| 25 | } |
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| 26 | |
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