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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - [ms] Miscompile with explicit call of default construct of virtual base"
href="https://llvm.org/bugs/show_bug.cgi?id=25370">25370</a>
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<th>Summary</th>
<td>[ms] Miscompile with explicit call of default construct of virtual base
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>trunk
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>All
</td>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Priority</th>
<td>P
</td>
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<th>Component</th>
<td>Frontend
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>nicolasweber@gmx.de
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Consider:
struct Test {
virtual ~Test() {}
};
struct BrowserTest : virtual public Test {};
struct NonsecureURLRequestTest : public BrowserTest {
NonsecureURLRequestTest() : BrowserTest() {}
};
int main() {
new NonsecureURLRequestTest();
}
<span class="quote">> clang-cl foo.cc -m32
> foo</span >
This crashes. (With or without optimizations, 32-bit and 64-bit.)
If NonsecureURLRequestTest is defined like so
struct NonsecureURLRequestTest : public BrowserTest {
NonsecureURLRequestTest() {}
};
then everything works fine.
This causes the test failure in <a href="http://crbug.com/549765">http://crbug.com/549765</a></pre>
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