Fight Fire with Fire: How Much Can We Trust ChatGPT on Source Code-Related Tasks?
CoRR(2024)
Abstract
With the increasing utilization of large language models such as ChatGPT
during software development, it has become crucial to verify the quality of
code content it generates. Recent studies proposed utilizing ChatGPT as both a
developer and tester for multi-agent collaborative software development. The
multi-agent collaboration empowers ChatGPT to produce test reports for its
generated code, enabling it to self-verify the code content and fix bugs based
on these reports. However, these studies did not assess the effectiveness of
the generated test reports in validating the code. Therefore, we conduct a
comprehensive empirical investigation to evaluate ChatGPT's self-verification
capability in code generation, code completion, and program repair. We request
ChatGPT to (1) generate correct code and then self-verify its correctness; (2)
complete code without vulnerabilities and then self-verify for the presence of
vulnerabilities; and (3) repair buggy code and then self-verify whether the
bugs are resolved. Our findings on two code generation datasets, one code
completion dataset, and two program repair datasets reveal the following
observations: (1) ChatGPT often erroneously predicts its generated incorrect
code as correct. (2) The self-contradictory hallucinations in ChatGPT's
behavior arise. (3) The self-verification capability of ChatGPT can be enhanced
by asking the guiding question, which queries whether ChatGPT agrees with
assertions about incorrectly generated or repaired code and vulnerabilities in
completed code. (4) Using test reports generated by ChatGPT can identify more
vulnerabilities in completed code, but the explanations for incorrectly
generated code and failed repairs are mostly inaccurate in the test reports.
Based on these findings, we provide implications for further research or
development using ChatGPT.
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