| 1 | // RUN: %clang_cl_asan %Od %s %Fe%t |
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| 2 | // RUN: not %run %t 2>&1 | FileCheck %s |
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| 3 | |
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| 4 | #include <malloc.h> |
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| 5 | |
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| 6 | int main() { |
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| 7 | char *buffer = (char*)realloc(ptr: 0, size: 42); |
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| 8 | buffer[-1] = 42; |
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| 9 | // CHECK: AddressSanitizer: heap-buffer-overflow on address [[ADDR:0x[0-9a-f]+]] |
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| 10 | // CHECK: WRITE of size 1 at [[ADDR]] thread T0 |
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| 11 | // CHECK-NEXT: {{#0 .* main .*realloc_left_oob.cpp}}:[[@LINE-3]] |
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| 12 | // CHECK: [[ADDR]] is located 1 bytes before 42-byte region |
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| 13 | // CHECK: allocated by thread T0 here: |
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| 14 | // CHECK-NEXT: {{#0 .* realloc }} |
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| 15 | // CHECK: {{ #[1-2] .* main .*realloc_left_oob.cpp}}:[[@LINE-8]] |
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| 16 | free(ptr: buffer); |
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| 17 | } |
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| 18 | |
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