File#truncate blows up JRuby on files from within JAR files
-----------------------------------------------------------
Key: JRUBY-2357
URL: http://jira.codehaus.org/browse/JRUBY-2357
Project: JRuby
Issue Type: Bug
Components: Core Classes/Modules
Affects Versions: JRuby 1.1
Environment: Latest JRuby 1.1
Reporter: Vladimir Sizikov
Assignee: Vladimir Sizikov
Fix For: JRuby 1.1.1
The following example (executed in JRuby's test directory):
{noformat}
File.open("file:test_jar2.jar!/test_value.rb", "r+") { |f|
f.truncate(2)
}
{noformat}
terminates JRuby with the following exception:
{noformat}
Exception in thread "main" java.lang.ClassCastException:
java.nio.channels.Channels$ReadableByteChannelImpl cannot be cast to
java.nio.channels.FileChannel
at
org.jruby.util.io.ChannelStream.invalidateBuffer(ChannelStream.java:698)
at org.jruby.util.io.ChannelStream.ftruncate(ChannelStream.java:670)
at org.jruby.RubyFile.truncate(RubyFile.java:611)
at org.jruby.RubyFileInvoker$truncate_method_1_0.call(Unknown Source)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:146)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:302)
at
ruby.opt.work.samples.jar_minus_trunkate.closure_0_0(jar-trunkate.rb:2)
at
ruby.opt.work.samples.jar_minus_trunkateBlockCallback$closure_0_0xx1.call(Unknown
Source)
at
org.jruby.runtime.CompiledBlockLight.yield(CompiledBlockLight.java:107)
at
org.jruby.runtime.CompiledBlockLight.yield(CompiledBlockLight.java:88)
at org.jruby.runtime.Block.yield(Block.java:109)
at org.jruby.RubyIO.open(RubyIO.java:878)
at org.jruby.RubyIOInvoker$open_s_method_1_2.call(Unknown Source)
at
org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:90)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.cacheAndCall(CallSite.java:191)
at
org.jruby.runtime.CallSite$InlineCachingCallSite.call(CallSite.java:347)
at ruby.opt.work.samples.jar_minus_trunkate.__file__(jar-trunkate.rb:1)
at ruby.opt.work.samples.jar_minus_trunkate.load(jar-trunkate.rb)
at org.jruby.Ruby.runScript(Ruby.java:511)
at org.jruby.Ruby.runNormally(Ruby.java:431)
at org.jruby.Ruby.runFromMain(Ruby.java:311)
at org.jruby.Main.run(Main.java:141)
at org.jruby.Main.run(Main.java:88)
at org.jruby.Main.main(Main.java:79)
{noformat}
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