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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - basic_string::assign doesn't handle iterators into the string itself"
href="https://bugs.llvm.org/show_bug.cgi?id=49798">49798</a>
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<th>Summary</th>
<td>basic_string::assign doesn't handle iterators into the string itself
</td>
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<th>Product</th>
<td>libc++
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>All
</td>
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<th>OS</th>
<td>All
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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
</td>
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<th>Component</th>
<td>All Bugs
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<th>Assignee</th>
<td>unassignedclangbugs@nondot.org
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</tr>
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<th>Reporter</th>
<td>rs2740@gmail.com
</td>
</tr>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org, mclow.lists@gmail.com
</td>
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<p>
<div>
<pre>basic_string::assign, unlike the containers', needs to tolerate the case where
the iterators refers into the string. See <a href="https://wg21.link/string.assign#15">https://wg21.link/string.assign#15</a>,
which depicts a temporary string being constructed before any mutation takes
place.
Test case:
std::string s = "abcde";
s.assign(s.rbegin(), s.rend());
assert(s == "edcba");
I suspect, but have not checked, that other member functions taking iterator
pairs may have similar issues.</pre>
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