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<base href="https://bugs.llvm.org/">
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Designated initialisers - diagnose invalid designator order in C++20"
href="https://bugs.llvm.org/show_bug.cgi?id=40030">40030</a>
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<th>Summary</th>
<td>Designated initialisers - diagnose invalid designator order in C++20
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>trunk
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++2a
</td>
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>david.bolvansky@gmail.com
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<th>CC</th>
<td>blitzrakete@gmail.com, erik.pilkington@gmail.com, llvm-bugs@lists.llvm.org, richard-llvm@metafoo.co.uk
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<p>
<div>
<pre>struct S
{
int number;
const char *s;
};
S f()
{
return S{.number = 0, .s = "hi}; // correct order
return S{.s = "hi", .number = 0}; // invalid (out of) order
}
This should not be allowed in C++20 (according to a C++2a standard) and GCC
does not compile it - Clang trunk allows it.
GCC:
error: designator order for field 'S::number' does not match declaration order
in 'S'
12 | return S{.s = "hi", .number = 0};</pre>
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