forked from OSchip/llvm-project
36 lines
1.1 KiB
C++
36 lines
1.1 KiB
C++
// RUN: %clang_cl_asan -O0 %p/dll_host.cc -Fe%t
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// RUN: %clang_cl_asan -LD -O0 %s -Fe%t.dll
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// RUN: not %run %t %t.dll 2>&1 | FileCheck %s
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#include <sanitizer/asan_interface.h>
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void should_not_crash(volatile char *c) {
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*c = 42;
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}
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void should_crash(volatile char *c) {
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*c = 42;
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}
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extern "C" __declspec(dllexport)
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int test_function() {
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char buffer[256];
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should_not_crash(&buffer[0]);
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__asan_poison_memory_region(buffer, 128);
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should_not_crash(&buffer[192]);
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__asan_unpoison_memory_region(buffer, 64);
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should_not_crash(&buffer[32]);
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should_crash(&buffer[96]);
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// CHECK: AddressSanitizer: use-after-poison on address [[ADDR:0x[0-9a-f]+]]
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// CHECK-NEXT: WRITE of size 1 at [[ADDR]] thread T0
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// CHECK-NEXT: should_crash {{.*}}\dll_poison_unpoison.cc
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// CHECK-NEXT: test_function {{.*}}\dll_poison_unpoison.cc:[[@LINE-4]]
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// CHECK-NEXT: main
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//
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// CHECK: [[ADDR]] is located in stack of thread T0 at offset [[OFFSET:.*]] in frame
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// CHECK-NEXT: test_function {{.*}}\dll_poison_unpoison.cc
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// CHECK: 'buffer' <== Memory access at offset [[OFFSET]] is inside this variable
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return 0;
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}
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