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<base href="https://llvm.org/bugs/" />
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Warn if a value that's been std::move()d from is accessed"
href="https://llvm.org/bugs/show_bug.cgi?id=27562">27562</a>
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<th>Summary</th>
<td>Warn if a value that's been std::move()d from is accessed
</td>
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<th>Product</th>
<td>clang
</td>
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<th>Version</th>
<td>unspecified
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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>normal
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>C++
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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<th>Reporter</th>
<td>nicolasweber@gmx.de
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<th>CC</th>
<td>dgregor@apple.com, llvm-bugs@lists.llvm.org
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<th>Classification</th>
<td>Unclassified
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<p>
<div>
<pre>Spot the bug:
auto insertion_result = allocator_dumps_.insert(
std::make_pair(mad->absolute_name(), std::move(mad)));
DCHECK(insertion_result.second) << "Duplicate name: " <<
mad->absolute_name();
mad is move()d from in the first statement but then accessed in the second.
This is probably almost always a bug. We should warn on it. (I couldn't find an
existing bug for this.)
Maybe this could work similar to -Wuninitialized where we conceptually treat
things that have been move()d from as uninitialized from that point on.</pre>
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