Issues

• Index -1 out of bounds exception when code/removal/variable optimization is enabled

  bugneeds-more-infooptimization
  Guardsquare/proguard#540 · Filter by author soundasleep opened on Sep 25, 2026

• !method/specialization/returntype fails for JvmMultifileClass classes

  bugconfirmedkotlin-supportoptimization
  Guardsquare/proguard#533 · Filter by author igordmn opened on Jul 15, 2026

• How do configure setter and getter methods generated using obfuscated attribute names

  Guardsquare/proguard#532 · Filter by author joker-pper opened on Jul 12, 2026

• NullPointerException in KotlinReferenceFixer with Kotlin 2.4 value-parameter annotation metadata

  Guardsquare/proguard#530 · Filter by author bodiam opened on Jun 11, 2026
  4

• Obfuscaton of inner class extending a generic type breaks reflection

  bugconfirmedshrinking
  Guardsquare/proguard#519 · Filter by author HeikoKlare opened on Feb 23, 2026
  2

• AbstractMethodError on Lambdas due to partial renaming of InvokeDynamic (LambdaMetafactory) call sites

  bugconfirmed
  Guardsquare/proguard#512 · Filter by author ShortyDev opened on Dec 10, 2025
  7

• Misleading Warning for -keepclasseswithmembernames With Empty Member Block

  Guardsquare/proguard#511 · Filter by author anandbabu-r opened on Nov 18, 2025

• "Stacks have different current sizes" on valid bytecode

  bugcant-reproduceneeds-more-infooptimization
  Guardsquare/proguard#509 · Filter by author Sunderw3k opened on Nov 9, 2025
  2

• Spring Boot WAR fails to start after ProGuard obfuscation (no logs in Tomcat 10)

  obfuscationspring-bootwar-support
  Guardsquare/proguard#500 · Filter by author ICRMS-TStack opened on Sep 29, 2025
  1

• java.lang.VerifyError when using MethodHandle constructs

  bugconfirmedobfuscationproguard-core
  Guardsquare/proguard#499 · Filter by author maartenc opened on Sep 25, 2025
  1

• Is there's ignore some class totally config

  cant-reproduce
  Guardsquare/proguard#498 · Filter by author BerserkGuts opened on Sep 25, 2025
  2

• Don't merge classes with static initializers

  bugoptimization
  Guardsquare/proguard#496 · Filter by author BoannWasHere opened on Sep 18, 2025
  1

• Request -optimizationsummary option

  enhancement
  Guardsquare/proguard#494 · Filter by author BoannWasHere opened on Aug 29, 2025

• Proguard org.springframework.beans.BeanInstantiationException

  cant-reproduceneeds-more-info
  Guardsquare/proguard#491 · Filter by author PaoloHi opened on Aug 15, 2025
  5

• Using a switch on a class field which is an interface implemented by an Enum without explicitly casting to an enum will use the default branch every time after obfuscating

  bugconfirmedobfuscation
  Guardsquare/proguard#483 · Filter by author charon25 opened on Jun 24, 2025
  4

• Method overriding

  needs-more-info
  Guardsquare/proguard#482 · Filter by author SpigotRCE opened on Jun 19, 2025
  1

• Invalid instruction offset when trying to optimise ambiguous method calls disambiguated with casting

  cant-reproduceneeds-more-info
  Guardsquare/proguard#478 · Filter by author soundasleep opened on May 12, 2025
  3

• Bad bytecode when optimizer enabled

  Guardsquare/proguard#477 · Filter by author revonateB0T opened on May 8, 2025
  4

• Metadata in kotlin is being changed regardles of -keep kotlin.Metadata

  Guardsquare/proguard#476 · Filter by author kmbisset89 opened on May 1, 2025
  6

• How to setup libraryjars, if jmods are missing

  javaux-improvement
  Guardsquare/proguard#473 · Filter by author lgemeinhardt opened on Mar 31, 2025
  10

• Getting issues while using VungleAds & UnityAds SDK

  Guardsquare/proguard#472 · Filter by author jewelshkjony opened on Mar 27, 2025

• [proguard] java.io.IOException: The input doesn't contain any classes. Did you specify the proper '-injars' options?

  Guardsquare/proguard#469 · Filter by author superHjh opened on Mar 12, 2025
  1

• Support hash-based incremental obfuscation

  enhancement
  Guardsquare/proguard#466 · Filter by author ianbrandt opened on Feb 22, 2025
  1

• Support for "dontnote" for resource files

  Guardsquare/proguard#465 · Filter by author Lonzak opened on Feb 21, 2025
  1

• filtering Output How do you maintain the directory structure?

  Guardsquare/proguard#463 · Filter by author fendo8888 opened on Feb 10, 2025