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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [ASan/Win] SEH exceptions are not handled with the MD runtime in multi-module apps"
href="http://llvm.org/bugs/show_bug.cgi?id=20918">20918</a>
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<th>Summary</th>
<td>[ASan/Win] SEH exceptions are not handled with the MD runtime in multi-module apps
</td>
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<th>Product</th>
<td>compiler-rt
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Windows NT
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>normal
</td>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>compiler-rt
</td>
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>timurrrr@google.com
</td>
</tr>
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<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>SEH exceptions are not handled with the MD runtime in multi-module apps.
Example test that fails with the -MD build:
$ cat test/asan/TestCases/Windows/dll_null_deref.cc
// RUN: %clang_cl_asan -O0 %p/dll_host.cc -Fe%t
// RUN: %clang_cl_asan -LD -O0 %s -Fe%t.dll
// RUN: not %run %t %t.dll 2>&1 | FileCheck %s
__attribute__((noinline))
static void NullDeref(int *ptr) {
// CHECK: ERROR: AddressSanitizer: access-violation on unknown address
// CHECK: {{0x0*000.. .*pc 0x.*}}
ptr[10]++; // BOOM
}
extern "C" __declspec(dllexport)
int test_function() {
NullDeref((int*)0);
// CHECK: {{ #1 0x.* in test_function .*\dll_null_deref.cc:}}[[@LINE-1]]
// CHECK: AddressSanitizer can not provide additional info.
return 0;
}</pre>
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