24 lines
819 B
C++
24 lines
819 B
C++
// RUN: %clang_cl_asan -Od %p/dll_host.cpp -Fe%t
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// RUN: %clang_cl_asan -LD -Od %s -Fe%t.dll
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// RUN: not %run %t %t.dll 2>&1 | FileCheck %s
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#include <malloc.h>
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extern "C" __declspec(dllexport)
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int test_function() {
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char *buffer = (char*)malloc(42);
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buffer[-1] = 42;
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// CHECK: AddressSanitizer: heap-buffer-overflow on address [[ADDR:0x[0-9a-f]+]]
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// CHECK: WRITE of size 1 at [[ADDR]] thread T0
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// CHECK-NEXT: test_function {{.*}}dll_malloc_left_oob.cpp:[[@LINE-3]]
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// CHECK-NEXT: main {{.*}}dll_host.cpp
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//
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// CHECK: [[ADDR]] is located 1 bytes to the left of 42-byte region
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// CHECK-LABEL: allocated by thread T0 here:
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// CHECK-NEXT: malloc
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// CHECK-NEXT: test_function {{.*}}dll_malloc_left_oob.cpp:[[@LINE-10]]
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// CHECK-NEXT: main {{.*}}dll_host.cpp
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// CHECK-LABEL: SUMMARY
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free(buffer);
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return 0;
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}
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