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ruby/logger gem broken after version 1.6.3 using JRuby on Windows · Issue #9348 · jruby/jruby · GitHub

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ruby/logger gem broken after version 1.6.3 using JRuby on Windows #9348

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Closed
ruby/logger gem broken after version 1.6.3 using JRuby on Windows#9348
Labels
windows
Milestone
JRuby 10.0.5.0

Description

headius
opened on Mar 30, 2026

Original issue: #8801

Environment Information

$ jruby -v
jruby 10.0.0.0 (3.4.2) 2025-04-13 6ed59bc847 OpenJDK 64-Bit Server VM 21.0.7+6-LTS on 21.0.7+6-LTS +indy +jit [x86_64-mswin32]

The same behavior is with jruby-9.4.8.0.
Everything works fine on CRuby 3.4.3.
https://github.com/ruby/logger

Expected Behavior
This script should write a logger header line into the test.log without an error:

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'
  gem 'logger', '=1.6.3'
end

log_file_path = 'test.log'
if File.exist?(log_file_path)
 File.delete(log_file_path)
end
Logger.new(log_file_path)

Actual Behavior

The execution fails with this error:

Unhandled Java exception: java.lang.UnsatisfiedLinkError: The specified procedure could not be found.

java.lang.UnsatisfiedLinkError: The specified procedure could not be found.

  newUnsatisifiedLinkError at jnr/ffi/provider/jffi/AsmRuntime.java:48
                     flock at jnr/posix/WindowsLibC$jnr$ffi$0:-1
                     flock at jnr/posix/BaseNativePOSIX.java:599
                     flock at jnr/posix/CheckedPOSIX.java:460
                     flock at jnr/posix/LazyPOSIX.java:454
                     flock at org/jruby/util/io/PosixShim.java:222
                       run at org/jruby/util/io/OpenFile.java:2832
                       run at org/jruby/util/io/OpenFile.java:2829
               executeTask at org/jruby/RubyThread.java:1791
       executeTaskBlocking at org/jruby/RubyThread.java:1765
               threadFlock at org/jruby/util/io/OpenFile.java:2829
                     flock at org/jruby/RubyFile.java:275
                      call at org/jruby/RubyFile$INVOKER$i$1$0$flock.gen:-1
              cacheAndCall at org/jruby/runtime/callsite/CachingCallSite.java:466
                      call at org/jruby/runtime/callsite/CachingCallSite.java:244
               processCall at org/jruby/ir/interpreter/InterpreterEngine.java:320
                 interpret at org/jruby/ir/interpreter/StartupInterpreterEngine.java:66
                 interpret at org/jruby/ir/interpreter/InterpreterEngine.java:88
          INTERPRET_METHOD at org/jruby/internal/runtime/methods/MixedModeIRMethod.java:201
                      call at org/jruby/internal/runtime/methods/MixedModeIRMethod.java:188
                      call at org/jruby/internal/runtime/methods/DynamicMethod.java:225
              cacheAndCall at org/jruby/runtime/callsite/CachingCallSite.java:466
                      call at org/jruby/runtime/callsite/CachingCallSite.java:244
               processCall at org/jruby/ir/interpreter/InterpreterEngine.java:320
                 interpret at org/jruby/ir/interpreter/StartupInterpreterEngine.java:66
                 interpret at org/jruby/ir/interpreter/InterpreterEngine.java:88
          INTERPRET_METHOD at org/jruby/internal/runtime/methods/MixedModeIRMethod.java:201
                      call at org/jruby/internal/runtime/methods/MixedModeIRMethod.java:188
                      call at org/jruby/internal/runtime/methods/DynamicMethod.java:225
              cacheAndCall at org/jruby/runtime/callsite/CachingCallSite.java:466
                      call at org/jruby/runtime/callsite/CachingCallSite.java:244
               processCall at org/jruby/ir/interpreter/InterpreterEngine.java:320
                 interpret at org/jruby/ir/interpreter/StartupInterpreterEngine.java:66
                 interpret at org/jruby/ir/interpreter/InterpreterEngine.java:88
          INTERPRET_METHOD at org/jruby/internal/runtime/methods/MixedModeIRMethod.java:201
                      call at org/jruby/internal/runtime/methods/MixedModeIRMethod.java:188
                      call at org/jruby/internal/runtime/methods/DynamicMethod.java:225
              cacheAndCall at org/jruby/runtime/callsite/CachingCallSite.java:466
                      call at org/jruby/runtime/callsite/CachingCallSite.java:244
               processCall at org/jruby/ir/interpreter/InterpreterEngine.java:320
                 interpret at org/jruby/ir/interpreter/StartupInterpreterEngine.java:66
                 interpret at org/jruby/ir/interpreter/InterpreterEngine.java:94
          INTERPRET_METHOD at org/jruby/internal/runtime/methods/MixedModeIRMethod.java:238
                      call at org/jruby/internal/runtime/methods/MixedModeIRMethod.java:225
              cacheAndCall at org/jruby/runtime/callsite/CachingCallSite.java:481
                      call at org/jruby/runtime/callsite/CachingCallSite.java:308
               newInstance at org/jruby/RubyClass.java:1036
                      call at org/jruby/RubyClass$INVOKER$i$newInstance.gen:-1
                      call at org/jruby/internal/runtime/methods/JavaMethod.java:375
              cacheAndCall at org/jruby/runtime/callsite/CachingCallSite.java:476
                      call at org/jruby/runtime/callsite/CachingCallSite.java:293
               processCall at org/jruby/ir/interpreter/InterpreterEngine.java:330
                 interpret at org/jruby/ir/interpreter/StartupInterpreterEngine.java:66
          INTERPRET_METHOD at org/jruby/internal/runtime/methods/MixedModeIRMethod.java:128
                      call at org/jruby/internal/runtime/methods/MixedModeIRMethod.java:115
              cacheAndCall at org/jruby/runtime/callsite/CachingCallSite.java:446
                      call at org/jruby/runtime/callsite/CachingCallSite.java:92
               newInstance at org/jruby/RubyClass.java:1050
                      call at org/jruby/RubyClass$INVOKER$i$newInstance.gen:-1
       performIndirectCall at org/jruby/ir/targets/indy/InvokeSite.java:860
                    invoke at org/jruby/ir/targets/indy/InvokeSite.java:785

                       run at logger-test.rb:-1
       invokeWithArguments at java/lang/invoke/MethodHandle.java:733
                      load at org/jruby/ir/Compiler.java:114
                 runScript at org/jruby/Ruby.java:1221
               runNormally at org/jruby/Ruby.java:1133
               runFromMain at org/jruby/Ruby.java:978
               internalRun at org/jruby/Main.java:282
                       run at org/jruby/Main.java:227
                      main at org/jruby/Main.java:199

Looking into the issue

The looger gem is broken after this commit was introduced. Testing the changes on the same Windows machine, I got to this code:

file_path = 'test.txt'
f = File.new(file_path, mode: File::CREAT)
f.flock(File::LOCK_EX)
f = File.new(f.fileno, mode: File::WRONLY, path: file_path)
f.flock(File::LOCK_UN)

which fails with:

Unhandled Java exception: java.nio.channels.NonWritableChannelException
java.nio.channels.NonWritableChannelException: null
                 lock at sun/nio/ch/FileChannelImpl.java:1465
                 lock at org/jruby/util/io/PosixShim.java:658
                flock at org/jruby/util/io/PosixShim.java:246
                  run at org/jruby/util/io/OpenFile.java:2832
                  run at org/jruby/util/io/OpenFile.java:2829
          executeTask at org/jruby/RubyThread.java:1791
  executeTaskBlocking at org/jruby/RubyThread.java:1765
          threadFlock at org/jruby/util/io/OpenFile.java:2829
                flock at org/jruby/RubyFile.java:275
                 call at org/jruby/RubyFile$INVOKER$i$1$0$flock.gen:-1
                 call at org/jruby/internal/runtime/methods/JavaMethod.java:841
  performIndirectCall at org/jruby/ir/targets/indy/InvokeSite.java:860
               invoke at org/jruby/ir/targets/indy/InvokeSite.java:785

                  run at flock-test.rb:-1
  invokeWithArguments at java/lang/invoke/MethodHandle.java:733
                 load at org/jruby/ir/Compiler.java:114
            runScript at org/jruby/Ruby.java:1221
          runNormally at org/jruby/Ruby.java:1133
          runFromMain at org/jruby/Ruby.java:978
          internalRun at org/jruby/Main.java:282
                  run at org/jruby/Main.java:227
                 main at org/jruby/Main.java:199

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