Log4j library obfuscation error

[Dream4Theater]

Bug Report

Expected Behaviour

I wanna obfuscate jar with log4j and https://github.com/bwaldvogel/log4j-systemd-journal-appender dependencies were added but i am getting error while LogManager.getLogger was running. I couldn't say obfuscate jar to not obfuscate log4j library.

Actual Behaviour

Exception in thread "main" java.lang.VerifyError: Expecting a stackmap frame at branch target 165 Exception Details: Location: org/apache/logging/log4j/core/lookup/Interpolator.<init>(Lorg/apache/logging/log4j/core/lookup/StrLookup;Ljava/util/List;)V @165: ifeq Reason: Expected stackmap frame at this location. Bytecode: 0000000: 2ab7 00ef 2abb 00f1 59b7 00f2 b500 862a 0000010: 2bb8 00f6 9900 22bb 00f8 59bb 00f1 59b7 0000020: 00f2 b700 fb12 5ab6 005e 5712 8db6 005e 0000030: 749b 0006 01bf 2bb5 007e bb01 0159 b200 0000040: 90b2 0050 032e 32b7 0104 4e2d 2cb6 0108 0000050: 2db6 010b 3a04 1904 b901 0f01 00b9 0115 0000060: 0100 3a05 1905 b901 1b01 00b8 011f 9900 0000070: 9319 05b9 0123 0100 c000 083a 0619 06b9 0000080: 0126 0100 c001 28b6 012c 12fd b601 323a 0000090: 0719 07b6 0136 b200 90b2 0050 042e 32b6 00000a0: 0139 b801 1f99 0000 0b01 3eb8 011f 9900 00000b0: 0023 b400 8619 06b9 0141 0100 c000 2bb6 00000c0: 0144 1907 b801 4ab9 014e 0300 125a b600 00000d0: 5e58 125a b600 5e57 1260 b600 5e74 9e00 00000e0: 0016 bf3a 072a 1906 b901 4101 00c0 002b 00000f0: 1907 b701 5212 5ab6 005e 5701 c6ff 6801 0000100: bfb1 Exception Handler Table: bci [125, 210] => handler: 227 Stackmap Table: full_frame(@54,{Object[#2],Object[#253],Object[#255]},{Object[#2]}) full_frame(@55,{Object[#2],Object[#253],Object[#255]},{Object[#2],Object[#253]}) append_frame(@100,Object[#257],Object[#10],Object[#279]) append_frame(@177,Object[#8],Object[#302]) chop_frame(@210,1) same_locals_1_stack_item_frame(@227,Object[#238]) chop_frame(@245,1) chop_frame(@257,1) at org.apache.logging.log4j.core.config.AbstractConfiguration.<init>(Unknown Source) at org.apache.logging.log4j.core.config.NullConfiguration.<init>(Unknown Source) at org.apache.logging.log4j.core.LoggerContext.<clinit>(Unknown Source) at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.createContext(Unknown Source) at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.locateContext(Unknown Source) at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(Unknown Source) at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(Unknown Source) at org.apache.logging.log4j.core.selector.ClassLoaderContextSelector.getContext(Unknown Source) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Unknown Source) at org.apache.logging.log4j.core.impl.Log4jContextFactory.getContext(Unknown Source) at org.apache.logging.log4j.LogManager.getContext(Unknown Source) at org.apache.logging.log4j.LogManager.getLogger(Unknown Source) at MDI.utils.Log.<clinit>(Unknown Source) at Main.main(Unknown Source)

How to reproduce the behaviour

If u add log4j and https://github.com/bwaldvogel/log4j-systemd-journal-appender this libraries and request LogManager.getLogger function it brokes.

Possible fix

If maybe i can say don't obfuscate log4j that can be the solution because i still couldn't figure out how to do that. I am still using default configurations while obfuscating^^