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<base href="http://llvm.org/bugs/" />
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Wrong make_shared picked when boost::make_shared is imported"
href="http://llvm.org/bugs/show_bug.cgi?id=18969">18969</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Wrong make_shared picked when boost::make_shared is imported
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>3.3
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>MacOS X
</td>
</tr>
<tr>
<th>Status</th>
<td>NEW
</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>sunnylandh@gmail.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>Created <span class=""><a href="attachment.cgi?id=12149" name="attach_12149" title="code to reproduce issue">attachment 12149</a> <a href="attachment.cgi?id=12149&action=edit" title="code to reproduce issue">[details]</a></span>
code to reproduce issue
Apple LLVM version 5.0 (clang-500.2.79) (based on LLVM 3.3svn)
Target: x86_64-apple-darwin13.0.0
Thread model: posix
// clang++ -I/opt/local/include/ make-shared.cc
#include <string>
#include <list>
#include <boost/make_shared.hpp>
class Z
{
public:
explicit
Z(std::string a)
{
}
};
using boost::shared_ptr;
using boost::make_shared;
int main() {
std::string a;
shared_ptr<Z> z = make_shared<Z>(a);
}
This code does not compile with clang++. Compiler complains:
make-shared.cc:22:17: error: no viable conversion from 'shared_ptr<Z>' (aka
'std::__1::shared_ptr<Z>') to 'shared_ptr<Z>' (aka
'boost::shared_ptr<Z>')
libboost is version 1.55 installed from Macports.
It seems that std::__1::make_shared is picked, even if boost::make_shared is
imported to current namespace. This happens only if the Z constructor takes a
STL type such as std::string or std::list<int>. It does not happen if Z
constructor takes an int.</pre>
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