| 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 <stdio.h> |
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| 5 | |
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| 6 | int main() { |
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| 7 | int subscript = -1; |
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| 8 | char buffer[42]; |
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| 9 | buffer[subscript] = 42; |
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| 10 | // CHECK: AddressSanitizer: stack-buffer-underflow on address [[ADDR:0x[0-9a-f]+]] |
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| 11 | // CHECK: WRITE of size 1 at [[ADDR]] thread T0 |
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| 12 | // CHECK-NEXT: {{#0 .* main .*stack_array_left_oob.cpp}}:[[@LINE-3]] |
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| 13 | // CHECK: Address [[ADDR]] is located in stack of thread T0 at offset [[OFFSET:.*]] in frame |
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| 14 | // CHECK-NEXT: {{#0 .* main .*stack_array_left_oob.cpp}} |
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| 15 | // CHECK: 'buffer'{{.*}} <== Memory access at offset [[OFFSET]] underflows this variable |
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| 16 | } |
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| 17 | |
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