<html>
<head>
<base href="https://bugs.llvm.org/">
</head>
<body><table border="1" cellspacing="0" cellpadding="8">
<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - libc++ std::span implementation missing constructor overload for iterator and sentinel"
href="https://bugs.llvm.org/show_bug.cgi?id=51443">51443</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>libc++ std::span implementation missing constructor overload for iterator and sentinel
</td>
</tr>
<tr>
<th>Product</th>
<td>libc++
</td>
</tr>
<tr>
<th>Version</th>
<td>12.0
</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>enolan@alumni.cmu.edu
</td>
</tr>
<tr>
<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
</td>
</tr></table>
<p>
<div>
<pre>The constructor taking an iterator/sentinel seems to be missing from libc++'s
implementation of std::span.
Prototype:
template<class It, class End>
constexpr explicit(extent != dynamic_extent) span(It first, End last);
Standard link (section 22.7.3.2):
<a href="http://eel.is/c++draft/views#lib:span,constructor__">http://eel.is/c++draft/views#lib:span,constructor__</a>
Example:
#include <span>
#include <string>
void foo() {
std::string str{};
std::span bar{str.begin(), str.end()};
}
The above code fails to compile on Clang 12.0.1 with -std=c++20 -stdlib=libc++,
but is accepted with -stdlib=libstdc++.</pre>
</div>
</p>
<hr>
<span>You are receiving this mail because:</span>
<ul>
<li>You are on the CC list for the bug.</li>
</ul>
</body>
</html>