Re: Possible stack frame calc dead code bug again!
Charles Oliver Nutter <[email protected]>
| Newsgroups | gmane.comp.java.objectweb.asm |
|---|---|
| Message-ID | <CAE-f1xS0hcbhtCWQ2LsVY-YpqNini4oXd9_C7xrEyQFUpHqfcw@mail.gmail.com> |
Ok, I'll give it a try. On Fri, Sep 9, 2011 at 1:27 PM, <[email protected]> wrote: > can you also give the ASMifier code to produce the class, so that we have the original bytecode (i.e. before ClassWriter replaces deadcode with NOPs)? > > Eric > > Charles Oliver Nutter wrote: >> Hello everyone, it's your friendly neighborhood compiler writer who >> refuses to remove dead code! >> >> We have a similar case to the previous bug, though this one appears >> to >> only fail verification on Java 7...not on Java 6. >> >> The bytecode that fails is shown here: >> https://gist.github.com/8899f7b0c7f8cd741ef8 >> >> The error: >> >> Stack map does not match the one at exception handler 56 in method >> blah.block_0$RUBY$__file__(Lblah;Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject; >> at offset 29 >> java.lang.VerifyError: Stack map does not match the one at exception >> handler 56 in method >> blah.block_0$RUBY$__file__(Lblah;Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject; >> at offset 29 >> >> Other than the version number 51 in the class file, the same bytecode >> verifies on Java 6. Something got stricter in 7? Something broke? >> >> I've attached a zip containing the class file and the full output of >> dumping the entire class's bytecode. >> >> This is running on RC1ish (custom build). >> >> Help?! >> >> - Charlie >> >> >> -- >> You receive this message as a subscriber of the [email protected] mailing >> list. >> To unsubscribe: mailto:[email protected] >> For general help: mailto:[email protected]?subject=help >> OW2 mailing lists service home page: http://www.ow2.org/wws >
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