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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - -Wpessimizing-move and -Wredundant-move are applicable only when returned expression is id-expression"
href="https://bugs.llvm.org/show_bug.cgi?id=42832">42832</a>
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<th>Summary</th>
<td>-Wpessimizing-move and -Wredundant-move are applicable only when returned expression is id-expression
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>8.0
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<th>Hardware</th>
<td>All
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<th>OS</th>
<td>All
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<th>Status</th>
<td>NEW
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<th>Severity</th>
<td>normal
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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>andrey.a.davydov@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>
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<pre>-Wredundant-move: (<a href="https://gcc.godbolt.org/z/j2CTqF">https://gcc.godbolt.org/z/j2CTqF</a>)
std::unique_ptr<int> f(std::unique_ptr<int> param)
{
// clang shows "redundant move", but without it code doesn't compile
return { std::move(param) };
}
-Wpessimizing-move: (<a href="https://gcc.godbolt.org/z/2DIBcC">https://gcc.godbolt.org/z/2DIBcC</a>)
std::unique_ptr<int> f()
{
std::unique_ptr<int> result;
// clang shows "pessimizing move", but without it code doesn't compile
return { std::move(result) };
}</pre>
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