Name: ipR10196 Date: 09/01/2003


--------------------------------------
Test : nsk/jdb/next/next001
VM : ServerVM
Mode : -Xcomp
Platform : x86
OS : SunOS 5.8, RedHat Linux 8.0, Windows 2000
JDK : 1.5.0 b15-b17
----------------------------------------

This test runs debugee class with JDB and exercise commands
'step' and 'next' for two similar threads in debuggee VM.
The JDB session shows that for the first thread both comands
work fine, while for the second thread the 'step' command
just runs debugee VM until exit.

This failure is reproduced since Tiger-b15 with ServerVM in
-Xcomp mode on Intel platform only. Solaris-sparc works fine.
Tiger-b14 also works fine on all platforms.

To reproduce this failure:
  cd /net/sqesvr.sfbay/export/vsn/GammaBase/Bugs/<this bug number>
  sh build.sh $JAVA_HOME
  sh run.sh [-g] [-v] $JAVA_HOME [JAVA_OPTS]
  see jdb.session file
where
    -g - run test with java_g binaries
    -v - run test in verbose mode

Here is failed jdb.session for "-server -Xcomp":
====================================================================================
Initializing jdb ...
> stop in nsk.jdb.next.next001a.main
Deferring breakpoint nsk.jdb.next.next001a.main.
It will be set after the class is loaded.
> run
run nsk.jdb.next.next001a
Set uncaught java.lang.Throwable
Set deferred uncaught java.lang.Throwable
>
VM Started: Set deferred breakpoint nsk.jdb.next.next001a.main

Breakpoint hit: "thread=main", nsk.jdb.next.next001a.main(), line=16 bci=0

main[1] stop in nsk.jdb.next.next001a.lastBreak
Set breakpoint nsk.jdb.next.next001a.lastBreak
main[1] cont
>
Breakpoint hit: "thread=Thread-1", nsk.jdb.next.next001a.lastBreak(), line=20 bci=0

Thread-1[1] step
>
Step completed: "thread=Thread-1", nsk.jdb.next.MyThread.func2(), line=65 bci=3

Thread-1[1] next
>
Step completed: "thread=Thread-1", nsk.jdb.next.MyThread.func2(), line=66 bci=9

Thread-1[1] where
  [1] nsk.jdb.next.MyThread.func2 (next001a.java:66)
  [2] nsk.jdb.next.MyThread.func1 (next001a.java:60)
  [3] nsk.jdb.next.MyThread.run (next001a.java:56)
Thread-1[1] cont
>
Breakpoint hit: "thread=Thread-2", nsk.jdb.next.next001a.lastBreak(), line=20 bci=0

Thread-2[1] step
>
The application exited
next
====================================================================================

Here is successful jdb.session for "-server -Xint":
====================================================================================
Initializing jdb ...
> stop in nsk.jdb.next.next001a.main
Deferring breakpoint nsk.jdb.next.next001a.main.
It will be set after the class is loaded.
> run
run nsk.jdb.next.next001a
Set uncaught java.lang.Throwable
Set deferred uncaught java.lang.Throwable
>
VM Started: Set deferred breakpoint nsk.jdb.next.next001a.main

Breakpoint hit: "thread=main", nsk.jdb.next.next001a.main(), line=16 bci=0

main[1] stop in nsk.jdb.next.next001a.lastBreak
Set breakpoint nsk.jdb.next.next001a.lastBreak
main[1] cont
>
Breakpoint hit: "thread=Thread-1", nsk.jdb.next.next001a.lastBreak(), line=20 bci=0

Thread-1[1] step
>
Step completed: "thread=Thread-1", nsk.jdb.next.MyThread.func2(), line=65 bci=3

Thread-1[1] next
>
Step completed: "thread=Thread-1", nsk.jdb.next.MyThread.func2(), line=66 bci=9

Thread-1[1] where
  [1] nsk.jdb.next.MyThread.func2 (next001a.java:66)
  [2] nsk.jdb.next.MyThread.func1 (next001a.java:60)
  [3] nsk.jdb.next.MyThread.run (next001a.java:56)
Thread-1[1] cont
>
Breakpoint hit: "thread=Thread-2", nsk.jdb.next.next001a.lastBreak(), line=20 bci=0

Thread-2[1] step
>
Step completed: "thread=Thread-2", nsk.jdb.next.MyThread.func2(), line=65 bci=3

Thread-2[1] next
>
Step completed: "thread=Thread-2", nsk.jdb.next.MyThread.func2(), line=66 bci=9

Thread-2[1] where
  [1] nsk.jdb.next.MyThread.func2 (next001a.java:66)
  [2] nsk.jdb.next.MyThread.func1 (next001a.java:60)
  [3] nsk.jdb.next.MyThread.run (next001a.java:56)
Thread-2[1] cont
>
The application exited
====================================================================================

Ivan Popov <###@###.###>

======================================================================

###@###.### 2003-09-09

The assertion that was added to the comments section has also been seen
in the following tests:

    nsk/jvmdi/RedefineClasses/redefclass019
    nsk/jvmdi/events/framepop001


Name: pvR10198 Date: 09/09/2003


See also hotspot/jvmti bug:
  4917404 VM misses stack frames in compiled mode on x86 platforms

Pavel Vyssotski <###@###.###>
======================================================================

###@###.### 2003-09-10

The following NSK test has the same failure modes as the next001 test:

    nsk/jdb/step_up/step_up001

The java command "runs to the end of the program" and the java_g
command fails the assertion.