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<base href="https://llvm.org/bugs/" />
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<body><table border="1" cellspacing="0" cellpadding="8">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - std::map::emplace calls wrong value type constructor"
href="https://llvm.org/bugs/show_bug.cgi?id=24860">24860</a>
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</tr>
<tr>
<th>Summary</th>
<td>std::map::emplace calls wrong value type constructor
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>3.6
</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>Severity</th>
<td>normal
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>All Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>ryancerium@gmail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>#include <string>
#include <map>
class Thing {
public:
Thing(const std::string &a) : mS(a) {};
private:
Thing(const Thing&) = delete;
Thing(Thing &&) = delete;
std::string mS;
};
int main(int argc, char *argv[]) {
std::map<int, Thing> m;
m.emplace(0, std::string("hello"));
}
This tries to call the deleted copy constructor instead of calling
Thing::Thing(const std::string &) to emplace the object in the std::map.</pre>
</div>
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