https://bugs.llvm.org/show_bug.cgi?id=43226
Bug ID: 43226
Summary: libfuzzer: Document REDUCE event outputs
Product: compiler-rt
Version: unspecified
Hardware: PC
OS: Linux
Status: NEW
Severity: enhancement
Priority: P
Component: fuzzer
Assignee: unassignedb...@nondot.org
Reporter: chf...@gmail.com
CC: llvm-bugs@lists.llvm.org
There are some information missing from the libfuzzer documentation about the
"L:" and "REDUCE" event. See https://llvm.org/docs/LibFuzzer.html#output
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 The example is outdated.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?
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