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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - std::function doesn't recognize null pointer to varargs function"
href="https://llvm.org/bugs/show_bug.cgi?id=23589">23589</a>
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<th>Summary</th>
<td>std::function doesn't recognize null pointer to varargs function
</td>
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<th>Product</th>
<td>libc++
</td>
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<th>Version</th>
<td>3.6
</td>
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<th>Hardware</th>
<td>PC
</td>
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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>All Bugs
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>david_work@me.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu, mclow.lists@gmail.com
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<th>Classification</th>
<td>Unclassified
</td>
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<div>
<pre>This crashes:
#include <functional>
void (*p)(...) = nullptr;
std::function< void() > f = p;
int main() {
try { f(); }
catch ( std::bad_function_call & ) {}
}
The problem is missing overloads of std::function::__not_null.
On a related note, I'm working on a std::function extension. Is there no
facility for function signature decomposition?</pre>
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