Accessing Encoding from java code is broken on new thread #7820
Description
Environment Information
Provide at least:
- JRuby version (
jruby -v) and command line (flags, JRUBY_OPTS, etc)- jruby 9.4.2.0 (3.1.0) 2023-03-08 90d2913 OpenJDK 64-Bit Server VM 17.0.4+8-LTS on 17.0.4+8-LTS +jit [arm64-darwin]
- Operating system and platform (e.g.
uname -a)- Darwin MacBook.local 22.5.0 Darwin Kernel Version 22.5.0: Mon Apr 24 20:52:24 PDT 2023; root:xnu-8796.121.2~5/RELEASE_ARM64_T6000 arm64
- Also tested in GitHub Actions that this fails on all platforms in the same way.
Expected Behavior
require 'java'
# This works in main thread
runtime = org.jruby.Ruby.getGlobalRuntime
puts runtime.evalScriptlet('Encoding::UTF_8')
Thread.new do
# However, the same code is broken in new thread
runtime = org.jruby.Ruby.getGlobalRuntime
puts runtime.evalScriptlet('Encoding::UTF_8')
end.joinThe code above should print UTF-8 twice:
UTF-8
UTF-8
Actual Behavior
UTF-8
warning: thread "Ruby-0-Thread-1: repro.rb:6" terminated with exception (report_on_exception is true):
java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 10
at org.jruby.Ruby.evalScriptlet(org/jruby/Ruby.java:884)
at org.jruby.Ruby.evalScriptlet(org/jruby/Ruby.java:860)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(jdk/internal/reflect/NativeMethodAccessorImpl.java:77)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(jdk/internal/reflect/DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(java/lang/reflect/Method.java:568)
at org.jruby.javasupport.JavaMethod.invokeDirectWithExceptionHandling(org/jruby/javasupport/JavaMethod.java:344)
at org.jruby.javasupport.JavaMethod.invokeDirect(org/jruby/javasupport/JavaMethod.java:205)
at repro.invokeOther4:evalScriptlet(repro.rb:8)
at repro.<main>(repro.rb:8)
at org.jruby.RubyProc.call(org/jruby/RubyProc.java:352)
at java.lang.Thread.run(java/lang/Thread.java:833)
Unhandled Java exception: java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 10
java.lang.ArrayIndexOutOfBoundsException: Index -1 out of bounds for length 10
evalScriptlet at org/jruby/Ruby.java:884
evalScriptlet at org/jruby/Ruby.java:860
invoke0 at jdk/internal/reflect/NativeMethodAccessorImpl.java:-2
invoke at jdk/internal/reflect/NativeMethodAccessorImpl.java:77
invoke at jdk/internal/reflect/DelegatingMethodAccessorImpl.java:43
invoke at java/lang/reflect/Method.java:568
invokeDirectWithExceptionHandling at org/jruby/javasupport/JavaMethod.java:344
invokeDirect at org/jruby/javasupport/JavaMethod.java:205
invokeOther4:evalScriptlet at repro.rb:8
<main> at repro.rb:8
call at org/jruby/RubyProc.java:352
run at java/lang/Thread.java:833