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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - range-loop-analysis checks for trivial copyability, rather than trivial copy-constructibility"
href="https://bugs.llvm.org/show_bug.cgi?id=48011">48011</a>
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<th>Summary</th>
<td>range-loop-analysis checks for trivial copyability, rather than trivial copy-constructibility
</td>
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<th>Product</th>
<td>clang
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<th>Version</th>
<td>11.0
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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>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>Static Analyzer
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<th>Assignee</th>
<td>dcoughlin@apple.com
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<th>Reporter</th>
<td>jake.arkinstall@gmail.com
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<th>CC</th>
<td>dcoughlin@apple.com, llvm-bugs@lists.llvm.org
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<div>
<pre>On the Cpplang slack, user Wolle posted a curious warning that came from
range-loop-analysis.
Here's a minimal example: <a href="https://godbolt.org/z/1cxs43">https://godbolt.org/z/1cxs43</a>. Note that without the
copy assignment operator overload, the warning is not present.
The range-based for loop performs a copy construction, so that is what should
be checked for.
At <a href="https://clang.llvm.org/doxygen/SemaStmt_8cpp_source.html#l02824">https://clang.llvm.org/doxygen/SemaStmt_8cpp_source.html#l02824</a>, the check
is on whether the type is trivially copyable, not whether it is trivially copy
constructible, which is a weaker requirement (but the relevant one in this
case). I am not intimately familiar with clang sourcecode, but I believe this
to be the cause of the warning.</pre>
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