Issues

• Jazzer runtime calls sun.misc.Unsafe memory-access methods that JDK 24+ warns about (JEP 471/498)

  CodeIntelligenceTesting/jazzer#1069 · Filter by author martinfrancois opened on Oct 12, 2026

• [Enhancement] Mutator which replaces ASCII digits with non-ASCII ones

  CodeIntelligenceTesting/jazzer#1068 · Filter by author Marcono1234 opened on Oct 12, 2026

• Current state of Jazzer and Code Intelligence GmbH

  CodeIntelligenceTesting/jazzer#1066 · Filter by author Marcono1234 opened on Sep 23, 2026
  2

• Java Module System Support in Jazzer

  CodeIntelligenceTesting/jazzer#1064 · Filter by author hendrikebbers opened on Aug 31, 2026

• Quarkus integration issue

  CodeIntelligenceTesting/jazzer#1063 · Filter by author Sbruk opened on Aug 16, 2026

• Reduce usage of pathSeparatorChar for non-path Opt values

  CodeIntelligenceTesting/jazzer#1062 · Filter by author Marcono1234 opened on Jul 18, 2026

• Suppression of JUnit's default @Timeout handling not working when running from IDE

  CodeIntelligenceTesting/jazzer#1060 · Filter by author Marcono1234 opened on Jul 18, 2026

• jazzer autofuzz stalls when generating BigInteger values

  CodeIntelligenceTesting/jazzer#1055 · Filter by author MarcSchoenefeld opened on Apr 22, 2026
  1

  

• Build Jazzer for Android is broken

  CodeIntelligenceTesting/jazzer#1053 · Filter by author Larry-N opened on Mar 24, 2026

• Segment fault in jdk25

  CodeIntelligenceTesting/jazzer#1035 · Filter by author ben-manes opened on Jan 25, 2026
  5

• Fuzz test with byte[] parameter with mutation annotation is treated as classic fuzz test / annotations are ignored

  CodeIntelligenceTesting/jazzer#1022 · Filter by author Marcono1234 opened on Dec 3, 2025
  10

• Dependency Dashboard

  CodeIntelligenceTesting/jazzer#968 · Filter by author renovate opened on Oct 10, 2025

• Jazzer exits after running first test

  enhancement
  CodeIntelligenceTesting/jazzer#933 · Filter by author iirekm opened on Jul 3, 2025
  1

• Problem Faced While Running Offline-Instrumented Jar Files: java.lang.NoClassDefFoundError: com/code_intelligence/jazzer/runtime/CoverageMap

  bug
  CodeIntelligenceTesting/jazzer#904 · Filter by author MuxiLyuLucy opened on Jul 7, 2024

• Set the -max_len argument in junit

  CodeIntelligenceTesting/jazzer#885 · Filter by author svdbtno opened on Nov 22, 2023
  6

• Using jazzer on junit4 / Android tests

  CodeIntelligenceTesting/jazzer#865 · Filter by author ubiratansoares opened on Oct 11, 2023
  4

• Protobuf format in input files is not user friendly

  CodeIntelligenceTesting/jazzer#847 · Filter by author hadi88 opened on Sep 6, 2023
  5

• The merge operation could fail when there's channel exception for coverage files

  CodeIntelligenceTesting/jazzer#802 · Filter by author hadi88 opened on Jul 17, 2023
  5

• when running pitest.org tests on jazz code it gives

  help wanted
  CodeIntelligenceTesting/jazzer#754 · Filter by author nagkumar opened on Jun 4, 2023
  4

• https://github.com/CodeIntelligenceTesting/jazzer/tree/main/examples/junit not compling

  CodeIntelligenceTesting/jazzer#714 · Filter by author nagkumar opened on Apr 19, 2023
  4

• Lock tracking?

  CodeIntelligenceTesting/jazzer#702 · Filter by author freedom1b2830 opened on Apr 7, 2023
  1

• [Q] How to enable value profiling when running a Junit @FuzzTest ?

  CodeIntelligenceTesting/jazzer#668 · Filter by author mdindoffer opened on Mar 16, 2023
  3

• Exited, not initialized

  CodeIntelligenceTesting/jazzer#667 · Filter by author freedom1b2830 opened on Mar 14, 2023

• An internal error occurred. >>No information<<.Fuzzing continued

  CodeIntelligenceTesting/jazzer#649 · Filter by author freedom1b2830 opened on Mar 4, 2023

• custom_hook_excludes is not documented in the docs.

  CodeIntelligenceTesting/jazzer#642 · Filter by author intrigus-lgtm opened on Feb 25, 2023
  1