###@###.### 2003-09-23

I did an NSK run with the Tiger-B20-snapshot VM dropped into a Tiger-B19
JDK and ran into the following assertion failure:

    assert(pc_desc != 0,"scopeDesc must exist")
    vframe.cpp, 396

This assertion is _not_ the same as the guarantee failure described in
either of the following bugs:

    4900762 2/4 JDI Regression test PopAsynchronousTest fails
    4909800 3/5 NSK test b4529145 gets "Error: scope must be present"
                x86 with -client only

I observed this assertion in the following NSK tests:

    nsk/hprof/options/format/format005
    nsk/hprof/options/monitor/monitor005
    nsk/hprof/regression/b4500875

b4500875 reproduced on Solaris 8 X86 with java -server-fast -Xcomp
in 2 runs out of 20. I have attached both hs_err_pid files.

b4500875 was not reproducible on Linux RH7.2 in 20 runs with java
-server-fast -Xcomp.

format005 reproduced on WinNT with java_g -client-test -Xcomp in
1 run out of 30. I have attached the doit.log.25 file.

monitor005 reproduced on WinNT with java_g -server-test -Xcomp in
1 run out of 30. I have attached the doit.log.23 file.