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LoadError with compiled multi-byte constant #4662

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jakago opened this issue Jun 9, 2017 · 4 comments
Closed

LoadError with compiled multi-byte constant #4662

jakago opened this issue Jun 9, 2017 · 4 comments
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ir
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JRuby 9.1.11.0

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@jakago
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jakago commented Jun 9, 2017

multibyteconst.rb

# coding: utf-8

# 'α'.bytes => [206, 177]
p CONST_α = 1

run with jruby 9.1.9.0

$ jruby multibyteconst.rb
1

compile and run with jruby 9.1.9.0

$ jrubyc multibyteconst.rb
$ jruby multibyteconst.class
LoadError: multibyteconst.class is not compiled Ruby; use java_import to load normal classes
@headius
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headius commented Jun 9, 2017

Confirmed on master.

@headius
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headius commented Jun 9, 2017

Actual error...may be an IR persistence bug. @enebo?

$ jruby -d blah.class
java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:498)
	at org.jruby.runtime.load.CompiledScriptLoader.loadScriptFromFile(CompiledScriptLoader.java:35)
	at org.jruby.Ruby.runFromMain(Ruby.java:547)
	at org.jruby.Main.doRunFromMain(Main.java:417)
	at org.jruby.Main.internalRun(Main.java:305)
	at org.jruby.Main.run(Main.java:232)
	at org.jruby.Main.main(Main.java:204)
Caused by: java.lang.ArrayIndexOutOfBoundsException: -79
	at org.jruby.ir.operands.OperandType.fromCoded(OperandType.java:73)
	at org.jruby.ir.persistence.IRReaderStream.decodeOperandType(IRReaderStream.java:389)
	at org.jruby.ir.persistence.IRReaderStream.decodeOperand(IRReaderStream.java:345)
	at org.jruby.ir.instructions.PutConstInstr.decode(PutConstInstr.java:36)
	at org.jruby.ir.persistence.IRReaderStream.decodeInstr(IRReaderStream.java:282)
	at org.jruby.ir.persistence.IRReaderStream.decodeInstructionsAt(IRReaderStream.java:194)
	at org.jruby.ir.persistence.IRReader$1.call(IRReader.java:63)
	at org.jruby.ir.persistence.IRReader$1.call(IRReader.java:59)
	at org.jruby.ir.interpreter.InterpreterContext.getEngine(InterpreterContext.java:40)
	at org.jruby.ir.interpreter.InterpreterContext.getInstructions(InterpreterContext.java:148)
	at org.jruby.ir.interpreter.InterpreterContext.computeScopeFlagsFromInstructions(InterpreterContext.java:154)
	at org.jruby.ir.IRScope.computeScopeFlags(IRScope.java:751)
	at org.jruby.ir.persistence.IRReader.load(IRReader.java:72)
	at org.jruby.ir.runtime.IRRuntimeHelpers.decodeScopeFromBytes(IRRuntimeHelpers.java:1584)
	at blah.loadIR(blah.rb)
	... 10 more
LoadError: blah.class is not compiled Ruby; use java_import to load normal classes

@enebo enebo added the ir label Jun 12, 2017
@enebo enebo added this to the JRuby 9.1.11.0 milestone Jun 12, 2017
@enebo enebo closed this as completed in f86604a Jun 12, 2017
This was referenced Jun 12, 2017
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@enebo
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enebo commented Jun 12, 2017

Just a recap that encoding was done using String.length() and then dumping the bytes. length() reports characters so derp....fwiw this is not a regression as it has always been coded this way (well 1.7 may have worked but it was a completely different code base for AOT).

This is still likely to break in scenarios where the mbc string is not UTF-8 and JVM file.coding is not UTF-8. 9.2 will address this pervasively as we will be passing ByteList or RubySymbol around and stop using j.l.String altogether.

enebo added a commit that referenced this issue Jun 12, 2017
@enebo
Fixes #4662. Line numbers in backtrace with multiline method invocati…
d7d063d 
…on are sometimes different from CRuby.
@enebo
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enebo commented Jun 12, 2017

Whoops this last commit was for #4664 and not #4662.

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