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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - Trunk regression: nested name specifier for a declaration cannot depend on a template parameter"
href="https://bugs.llvm.org/show_bug.cgi?id=42362">42362</a>
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<th>Summary</th>
<td>Trunk regression: nested name specifier for a declaration cannot depend on a template parameter
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>trunk
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
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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++17
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>andyg1001@hotmail.co.uk
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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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<pre>The following code fails to compile in trunk (r364144) and is a regression
compared to released clang 8.0 and earlier:
template <auto...> struct X {
struct Y;
};
template <auto... S> struct X<S...>::Y {
};
The error is:
<source>:5:31: error: nested name specifier for a declaration cannot depend on
a template parameter
template <auto... S> struct X<S...>::Y {
^~~~~~~~~</pre>
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