java/8939: Class files produced by gcj are incompatible with Sun's vm

[Tom Tromey]

The following reply was made to PR java/8939; it has been noted by GNATS.

From: Tom Tromey <tromey@redhat.com>
To: bhun@chello.nl
Cc: gcc-gnats@gcc.gnu.org
Subject: Re: java/8939: Class files produced by gcj are incompatible with Sun's vm
Date: 31 Dec 2002 01:48:47 -0700

 I looked at this PR a bit tonight.
 
 I believe the bytecode in question is this (I think this is the only
 invokespecial that could be considered incorrect):
 
 395: invokespecial #223=<Method org.apache.tools.ant.taskdefs.Tar$TarCompressionMethod.compress (java.io.OutputStream)java.io.OutputStream>
 
 I believe this code in jcf-write.c is at fault:
 
 	    else if (DECL_CONSTRUCTOR_P (f) || CALL_USING_SUPER (exp)
 		|| METHOD_PRIVATE (f))
 	      OP1 (OPCODE_invokespecial);
 
 I don't currently understand why this particular bytecode is
 considered invalid by the JDK.  The method in question is in fact
 private.  Most likely there is a special member class rule here that
 I'm unaware of; more research required.  (Another possibility is that
 I'm on the wrong track here.  It would help if you could send a
 correct Tar.class as compiled by javac...)
 
 Tom