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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::tuple<int, std::pair<int, NonDefaultConstructible>> compiler failure"
href="https://llvm.org/bugs/show_bug.cgi?id=25840">25840</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>std::tuple<int, std::pair<int, NonDefaultConstructible>> compiler failure
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</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>matthew@dempsky.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>Created <span class=""><a href="attachment.cgi?id=15458" name="attach_15458" title="clang++ -std=c++11 -nostdinc++ -I path/to/libcxx/include -c /tmp/repro.cc">attachment 15458</a> <a href="attachment.cgi?id=15458&action=edit" title="clang++ -std=c++11 -nostdinc++ -I path/to/libcxx/include -c /tmp/repro.cc">[details]</a></span>
clang++ -std=c++11 -nostdinc++ -I path/to/libcxx/include -c /tmp/repro.cc
With clang++ 255169 and libc++ 255702, this source file fails to compile:
#include <tuple>
#include <utility>
using namespace std;
struct S {
explicit S(int); // no default constructor
};
void f() {
// ok
make_pair(0, S(0));
make_tuple(0, S(0));
make_tuple(make_pair(0, S(0)));
// FAIL
make_tuple(0, make_pair(0, S(0)));
}</pre>
</div>
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