We experimented to find Null Pointer Exception bugs in 51 popular libraries, and reported 21 bugs to the maintainers of each library.
Of these, 15 reports have been patched, 4 reports are still open, and 2 reports were rejected. The table below lists the reported bugs.
| Project | Report | Status |
|---|---|---|
| Activiti | Issue 4553 | Open |
| Apache Commons BCEL | Issue 289 | Open |
| Apache Commons Configuration | Issue 355 | Patched |
| Apache Commons Configuration | Issue 365 | Patched |
| Apache Commons Configuration | Issue 368 | Patched |
| Apache Commons Configuration | Issue 381 | Patched |
| Apache Commons Configuration | Issue 382 | Rejected |
| Apache Commons DBCP | Issue 352 | Patched |
| Apache Commons IO | Issue 569 | Rejected |
| Apache Commons Math | Issue 236 | Open |
| Apache Johnzon | Issue 117 | Patched |
| Apache Johnzon | Issue 123 | Patched |
| Apache Karaf | Issue 1825 | Patched |
| Apache Karaf | Issue 1826 | Patched |
| Apache PDFBox | Issue 178 | Patched |
| Apache TsFile | Issue 50 | Open |
| Feign | Issue 2304 | Patched |
| JSqlParser | Issue 1965 | Patched |
| Kubernetes Java Client | Issue 3081 | Patched |
| Nutz | Issue 1613 | Open |
| OpenGrok | Issue 4542 | Patched |