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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - std::shuffle freeze up"
href="https://bugs.llvm.org/show_bug.cgi?id=45373">45373</a>
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<th>Summary</th>
<td>std::shuffle freeze up
</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>Macintosh
</td>
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<th>OS</th>
<td>MacOS X
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>release blocker
</td>
</tr>
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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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<th>Reporter</th>
<td>sdanie@protonmail.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>
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<pre>Created <span class=""><a href="attachment.cgi?id=23297" name="attach_23297" title="C++ source file showcasing the problem.">attachment 23297</a> <a href="attachment.cgi?id=23297&action=edit" title="C++ source file showcasing the problem.">[details]</a></span>
C++ source file showcasing the problem.
Using std::shuffle with a generator that yields the same value for all calls
causes std::shuffle to freeze up. I attached a C++ source file showcasing the
problem.
Replicates on:
Apple clang version 11.0.0 (clang-1100.0.33.12)
Target: x86_64-apple-darwin19.3.0
Thread model: posix
Replication:
clang++ -o bug.exe -std=c++17 bug.cpp && ./bug.exe
The application will freeze when trying to shuffle the elements.
The application will no longer freeze if the 17th element is removed from
samples.</pre>
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