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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - -Wunused-template false positive on unnamed struct"
href="https://bugs.llvm.org/show_bug.cgi?id=41168">41168</a>
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<th>Summary</th>
<td>-Wunused-template false positive on unnamed struct
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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
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<th>Status</th>
<td>NEW
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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>Frontend
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>david@doublewise.net
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, neeilans@live.com, richard-llvm@metafoo.co.uk
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<pre>The following code triggers -Wunused-template (note that the object is neither
static nor in the unnamed namespace, so the compiler cannot determine whether
it is used):
constexpr struct {
template<typename>
void f() {}
} warning;
The warning is fixed by naming the struct:
constexpr struct NoWarning {
template<typename>
void f() {}
} no_warning;
See it live: <a href="https://godbolt.org/z/_XmWs">https://godbolt.org/z/_XmWs</a>-</pre>
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