7.6.1

Bugfixes

• Fix backporting default interface method parameter annotations. (#451)
• Prevent Value in slot <n> is empty exception during processing time by no longer applying lower slot replacement by default. It can be enabled again with the optimization.enable.slot.replacement system property.

7.6

Java support

• Add support for Java 23. (#387)

Improved

• Improve obfuscation dictionary name performance with large dictionaries. (#413)

Bugfixes

• Prevent unknown enum value for KmVersionRequirementVersionKind exception when processing code compiled with an outdated Kotlin version.
• ReTrace: Fix separation of multiple frames with a newline. (#432)

7.5

Kotlin support

• Add support for Kotlin 2.0. (#376)

Java support

• Add support for Java 22. (#387)

Bugfixes

• Prevent unwanted name collision leading to missing methods in Kotlin DefaultImpls classes.
• Prevent ParseException when consumer rules contain -maximumremovedandroidloglevel rules.

7.4.2

Bugfixes

• Fix potential access issues when backporting.
• Fix potential NoClassDefFoundError when using type specialization optimization. (#373)
• Improve processing of Kotlin metadata flags to prevent unnecessary null checks for consumers of protected library artifacts.
• Prevent potential StackGeneralizationException during optimization when processing methods with many arguments.

Added

• ProGuardTask support for Gradle configuration cache. (#254)

7.4.1

Bugfixes

• Fix inadvertent closing of System.out when printing configuration. (#365)

Added

• Support for parsing of <clinit> methods without specifying the return type in class specifications.

7.4

Java support

• Add support for Java 21. (#331)

Kotlin support

• Add support for Kotlin 1.9.

Bugfixes

• Fix "NoClassDefFoundError: Failed resolution of: Lorg/apache/logging/log4j/LogManager" when using GSON optimization or -addconfigurationdebugging. (#326)
• Don't drop Record attribute for records with no components. (proguard-core#118)
• Fix potential duplication class when name obfuscating Kotlin multi-file facades.
• Do not inline interface methods during optimization to avoid compilation errors during output writing due to an interface method being made package visible.

Added

• Support parsing of wildcard * when used as a field type or method return type in class specifications.

7.4.0-beta02

Version 7.4-beta02

Java support

• Add support for Java 21. (#331)

Kotlin support

• Add support for Kotlin 1.9.

Bugfixes

• Fix "NoClassDefFoundError: Failed resolution of: Lorg/apache/logging/log4j/LogManager" when using GSON optimization or -addconfigurationdebugging. (#326)
• Don't drop Record attribute for records with no components. (proguard-core#118)
• Fix potential duplication of classes when name obfuscating Kotlin multi-file facades.

7.4.0-beta01

Version 7.4.0-beta01

Java support

• Add support for Java 21. (#331)

Kotlin support

• Add support for Kotlin 1.9.

Bugfixes

• Fix "NoClassDefFoundError: Failed resolution of: Lorg/apache/logging/log4j/LogManager" when using GSON optimization or -addconfigurationdebugging. (#326)

7.3.2

Version 7.3.2

Java support

• Add support for Java 20. (#294)

Improved

• Merge classes only when -optimizeaggressively is set.

Bugfixes

• Fix potential ArrayIndexOutOfBoundsException when processing Kotlin metadata. (#297)

7.3.1

Version 7.3.1

Kotlin support

• Add support for Kotlin 1.8.

Improved

• Conservative optimization is now the default. Previously, it could be enabled by setting the optimize.conservatively system property. This has been replaced with the -optimizeaggressively option, which sets optimization to aggressive.
• Improve optimization performance in edge cases with generated code. (#283)

Bugfixes

• Fix -keepparameternames to keep Kotlin function, constructor and property setter parameter names.
• Fix -keepparameternames to keep Kotlin annotation constructor parameter names.
• Fix -keepparameternames to keep Kotlin interface parameter names.
• Fix potential NullPointerException while processing enum classes with invalid Kotlin metadata.
• Fix potential Instruction has invalid constant index size error during GSON optimization.
• Fix member specialization & generalization optimizations.
• Fix potential "Сan't find referenced class ClassName$DefaultImpls" warnings. (#290)