<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 - Invalid consteval constructor invocation does not cause an error"
href="https://bugs.llvm.org/show_bug.cgi?id=52251">52251</a>
</td>
</tr>
<tr>
<th>Summary</th>
<td>Invalid consteval constructor invocation does not cause an error
</td>
</tr>
<tr>
<th>Product</th>
<td>clang
</td>
</tr>
<tr>
<th>Version</th>
<td>trunk
</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>enhancement
</td>
</tr>
<tr>
<th>Priority</th>
<td>P
</td>
</tr>
<tr>
<th>Component</th>
<td>-New Bugs
</td>
</tr>
<tr>
<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
</td>
</tr>
<tr>
<th>Reporter</th>
<td>stephan.bergmann.secondary@googlemail.com
</td>
</tr>
<tr>
<th>CC</th>
<td>htmldeveloper@gmail.com, llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
</td>
</tr></table>
<p>
<div>
<pre>At least with Clang 13 and recent Clang 14 trunk,
<span class="quote">> $ cat test.cc
> struct S {
> consteval S() {}
> int a;
> };
> S s2;</span >
<span class="quote">> $ clang++ -std=c++20 -fsyntax-only test.cc</span >
erroneously succeeds, while e.g. with GCC 11 it fails with
<span class="quote">> $ g++ -std=c++20 -fsyntax-only test.cc
> test.cc:5:3: error: ‘S()’ is not a constant expression
> 5 | S s2;
> | ^~
> test.cc:5:3: error: ‘s2.S::S()’ is not a constant expression because it refers to an incompletely initialized variable</span >
(I think this is different from <a class="bz_bug_link
bz_status_RESOLVED bz_closed"
title="RESOLVED INVALID - Defaulted consteval default constructor that performs no initialization is not rejected"
href="show_bug.cgi?id=51560">bug 51560</a>, as the initialization of s2 here
asks for default-initialization via the S() constructor.)</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>