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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Clang should not allow call constructor directly."
href="https://llvm.org/bugs/show_bug.cgi?id=23253">23253</a>
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<th>Summary</th>
<td>Clang should not allow call constructor directly.
</td>
</tr>
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<th>Product</th>
<td>clang
</td>
</tr>
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<th>Version</th>
<td>3.5
</td>
</tr>
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<th>Hardware</th>
<td>PC
</td>
</tr>
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<th>OS</th>
<td>Linux
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
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<th>Component</th>
<td>C++
</td>
</tr>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
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<th>Reporter</th>
<td>kunling@lingcc.com
</td>
</tr>
<tr>
<th>CC</th>
<td>dgregor@apple.com, llvmbugs@cs.uiuc.edu
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>For the following code, clang++ could compile with -std=c++11, and give the
following output which is incorrect.
#include <iostream>
struct B
{
};
struct C
{
C (){ std::cout << "C" << '\n'; }
C (B *) { std::cout << "C (B *)" << '\n';}
};
B *y = nullptr;
int main()
{
C::C (y);
}
output:
$ clang++ sfo.cpp -std=c++11
$ ./a.out
C
While g++ give an meaningful error message.
$ g++ sfo.cpp -std=c++11
sfo.cpp: In function ‘int main()’:
sfo.cpp:34:10: error: cannot call constructor ‘C::C’ directly [-fpermissive]
C::C (y);
^
sfo.cpp:34:10: note: for a function-style cast, remove the redundant ‘::C’
This bug was from Stackoverflow.com question (
<a href="http://stackoverflow.com/q/29681449/566459">http://stackoverflow.com/q/29681449/566459</a> ).</pre>
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