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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW - libfuzzer: Document REDUCE event outputs"
href="https://bugs.llvm.org/show_bug.cgi?id=43226">43226</a>
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<th>Summary</th>
<td>libfuzzer: Document REDUCE event outputs
</td>
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<th>Product</th>
<td>compiler-rt
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<th>Version</th>
<td>unspecified
</td>
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<th>Hardware</th>
<td>PC
</td>
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<th>OS</th>
<td>Linux
</td>
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<th>Status</th>
<td>NEW
</td>
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<th>Severity</th>
<td>enhancement
</td>
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<th>Priority</th>
<td>P
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<th>Component</th>
<td>fuzzer
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<th>Assignee</th>
<td>unassignedbugs@nondot.org
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<th>Reporter</th>
<td>chfast@gmail.com
</td>
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<th>CC</th>
<td>llvm-bugs@lists.llvm.org
</td>
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<p>
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<pre>There are some information missing from the libfuzzer documentation about the
"L:" and "REDUCE" event. See <a href="https://llvm.org/docs/LibFuzzer.html#output">https://llvm.org/docs/LibFuzzer.html#output</a>
section.
1. The example is outdated.
2. The "L:" column now has 2 values (e.g. "L: 17214/25000"). I'm guessing the
second one is the length limit, but this is also provided in the "lim:" column?
3. The REDUCE event also outputs "L:" and "MS:" values, but this is
undocumented. I would especially want to know that "L:" means in case of
REDUCE.
4. The REDUCE sometimes adds a new file to corpus (the file count increases).
Can you document why is this happening?</pre>
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