Your goal for this challenge is to create a new fuzz driver to improve the project's code coverage. A flag is awarded when the code coverage is improved by 5%. To receive the flag after code coverage has been improved, either run /challenge/loc (for Fuzz Dojo challenges) or follow the instructions in the training 'OSS-Fuzz - Code Coverage.'
This is a practice problem to familiarize you with the interface. This challenge may randomly be an OSS-Fuzz or a Fuzz Dojo configuration. The "cJSON Case Study" training video and slides provide the source code to solve this challenge. All you have to do is cut-and-paste the fuzz driver code provided in the slides into a new fuzz driver, check for code coverage, and you should be provided a flag for this level.
CJSON - simple 2304 loc 43%-43%-46% - 1 min
Use (Report link) to browse the source code and fuzz introspector report https://introspector.oss-fuzz.com/project-profile?project=cjson
Fuzz Introspector https://storage.googleapis.com/oss-fuzz-introspector/cjson/inspector-report/20250411/fuzz_report.html