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<base href="http://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Missing warning (error in C++11) for passing nontrivial object to varargs function via function pointer"
href="http://llvm.org/bugs/show_bug.cgi?id=16353">16353</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Missing warning (error in C++11) for passing nontrivial object to varargs function via function pointer
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Linux
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Keywords</th>
<td>accepts-invalid
</td>
</tr>
<tr>
<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>C++
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>matthewbg@google.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>$ cat test.cc
struct Foo {
Foo() {}
Foo(const Foo&) {}
};
void f(...);
void g() {
Foo foo;
f(foo);
void (*fp)(...) = f;
fp(foo);
}
$ clang -fsyntax-only -Wall test.cc
test.cc:10:5: error: cannot pass object of non-POD type 'Foo' through variadic
function; call will abort at runtime [-Wnon-pod-varargs]
f(foo);
^
1 error generated
$ clang -fsyntax-only -Wall -std=c++11 test.cc
test.cc:10:5: error: cannot pass object of non-trivial type 'Foo' through
variadic function; call will abort at runtime [-Wnon-pod-varargs]
f(foo);
^
1 error generated
$ g++ -c -o /dev/null -Wall test.cc
test.cc: In function 'void g()':
test.cc:10:8: error: cannot pass objects of non-trivially-copyable type 'struct
Foo' through '...'
test.cc:12:9: error: cannot pass objects of non-trivially-copyable type 'struct
Foo' through '...'</pre>
</div>
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