<html>
<head>
<base href="https://llvm.org/bugs/" />
</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 --- - Clang could emit a better diagnostic when an apostrophe is used as digit separator in -std=c++11" href="https://urldefense.proofpoint.com/v2/url?u=https-3A__llvm.org_bugs_show-5Fbug.cgi-3Fid-3D24277&d=AwMBaQ&c=8hUWFZcy2Z-Za5rBPlktOQ&r=pF93YEPyB-J_PERP4DUZOJDzFVX5ZQ57vQk33wu0vio&m=XkcFDvhgDVbRhaiPEzMrYnn5jlq-uKZYcKvrOM3h5-c&s=Dxu4hmjI0PvT2JrLR97PPogu6S4LO_h_R4wdSPfPHH8&e=">24277</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Clang could emit a better diagnostic when an apostrophe is used as digit separator in -std=c++11
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
<tr>
<th>Hardware</th>
<td>PC
</td>
</tr>
<tr>
<th>OS</th>
<td>Windows NT
</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++14
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>davide@freebsd.org
</td>
</tr>
<tr>
<th>CC</th>
<td>llvmbugs@cs.uiuc.edu
</td>
</tr>
<tr>
<th>Classification</th>
<td>Unclassified
</td>
</tr></table>
<p>
<div>
<pre>The following is completely fine in C++14:
constexpr auto blah = 10'000'000;
but it's not in C++11/03/98:
% ./clang++ constexpr.cpp -std=c++11
constexpr.cpp:1:25: error: expected ';' after top level declarator
constexpr auto blah = 10'000'000;
^
;
1 error generated.
Clang could probably emit (if possible) a slightly better diagnostic, e.g.
"using apostrophe as digit separator is only allowed in C++14" or "apostrophe
as digit separator is a C++14 feature".</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>