Oxygen defect hollow Co3O4/nitrogen-doped carbon (OV-HCo3O4@NC) nanocomposites were successfully synthesized by simple one-step pyrolysis of tannic acid-modified ZIF-67 (TAMZIF-67). OV-HCo3O4@NC shows good OER electrocatalytic activity and stability.

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This artifact contains the source code and instructions to reproduce the evaluation results of the paper ”Fuzzing Configurations of Program Options”. The source code includes the configuration grammars for 6 target programs, the scripts to generate configuration stubs and the scripts to post-process fuzzing results. The README of the artifact includes the steps to prepare the experimental environment on a clean Ubuntu machine, and step-by-step commands to reproduce the evaluation experiments. A VirtualBox image with ConfigFuzz properly set up is also included.

While many real-world programs are shipped with configurations to enable/disable functionalities, fuzzers have mostly been applied to test single configurations of these programs. In this work, we first conduct an empirical study to understand how program configurations affect fuzzing performance. We find that limiting a campaign to a single configuration can result in failing to cover a significant amount of code. We also observe that different program configurations contribute differing amounts of code coverage, challenging the idea that each one can be efficiently fuzzed individually. Motivated by these two observations we propose ConfigFuzz, which can fuzz configurations along with normal inputs. ConfigFuzz transforms the target program to encode its program options within part of the fuzzable input, so existing fuzzers’ mutation operators can be reused to fuzz program configurations. We instantiate ConfigFuzz on 6 configurable, common fuzzing targets, and integrate their executions in FuzzBench. In our evaluation, ConfigFuzz outperforms two baseline fuzzers in four targets, while the results are mixed in the other targets due to program size and configuration space. We also analyze the options fuzzed by ConfigFuzz and how they affect the performance.