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From: "greenrd at greenrd dot org" <gcc-bugzilla@gcc.gnu.org> To: java-prs@gcc.gnu.org Subject: [Bug java/23230] New: Wrong "this" used when call made to superclass which is also superclass of enclosing class Date: Thu, 04 Aug 2005 15:01:00 -0000 [thread overview] Message-ID: <20050804150110.23230.greenrd@greenrd.org> (raw) The following file is miscompiled by gcj -C: public class Outer extends Thread { public class Inner extends Thread { private Inner () { start (); } } } It uses the wrong "this" to call start(): Outer$Inner(Outer); Code: 0: aload_0 1: aload_1 2: putfield #12; //Field this$0:LOuter; 5: aload_0 6: invokespecial #15; //Method java/lang/Thread."<init>":()V 9: aload_1 10: invokevirtual #18; //Method java/lang/Thread.start:()V 13: return } Sun's compiler outputs correct code: private Outer$Inner(Outer); Code: 0: aload_0 1: aload_1 2: putfield #1; //Field this$0:LOuter; 5: aload_0 6: invokespecial #2; //Method java/lang/Thread."<init>":()V 9: aload_0 10: invokevirtual #3; //Method start:()V 13: return } The difference is at 9. Note: The bug does not occur if you just replace start() (which is declared in java.lang.Thread) with notify() (which is declared in java.lang.Object). -- Summary: Wrong "this" used when call made to superclass which is also superclass of enclosing class Product: gcc Version: 4.1.0 Status: UNCONFIRMED Severity: normal Priority: P2 Component: java AssignedTo: unassigned at gcc dot gnu dot org ReportedBy: greenrd at greenrd dot org CC: gcc-bugs at gcc dot gnu dot org,java-prs at gcc dot gnu dot org http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23230
next reply other threads:[~2005-08-04 15:01 UTC|newest] Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top 2005-08-04 15:01 greenrd at greenrd dot org [this message] 2005-08-04 15:05 ` [Bug java/23230] " greenrd at greenrd dot org 2005-08-04 15:23 ` pinskia at gcc dot gnu dot org 2005-08-04 15:26 ` greenrd at greenrd dot org 2005-08-04 22:03 ` greenrd at greenrd dot org 2005-08-07 11:51 ` greenrd at greenrd dot org 2005-08-08 9:43 ` rmathew at gcc dot gnu dot org 2005-08-09 0:44 ` greenrd at greenrd dot org 2005-08-11 11:49 ` cvs-commit at gcc dot gnu dot org 2005-08-11 13:04 ` cvs-commit at gcc dot gnu dot org 2005-08-11 13:26 ` pinskia at gcc dot gnu dot org
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