BZ #160: CACAO crashes in VMClass when building OpenJDK

Status fields:

# Running javac:
/home/andrew/builder/icedtea7/bootstrap/jdk1.6.0/bin/javac -J-XX:ThreadStackSize=1536
-J-XX:-PrintVMOptions -J-XX:+UnlockDiagnosticVMOptions -J-XX:-LogVMOutput -J-Xmx512m
-J-Xms512m -J-XX:PermSize=32m -J-XX:MaxPermSize=160m -g -Xlint:-path -source 7 -target 7
-encoding ascii -Xbootclasspath:/home/andrew/builder/icedtea7/openjdk.build-boot/classes
-sourcepath /home/andrew/builder/icedtea7/generated.build:../../../src/solaris/classes:.
./../../src/share/classes -bootclasspath /home/andrew/builder/icedtea7/openjdk.build-
boot/classes:/home/andrew/builder/icedtea7/bootstrap/jdk1.6.0/jre/lib/rt.jar -d
/home/andrew/builder/icedtea7/openjdk.build-boot/classes
@/home/andrew/builder/icedtea7/openjdk.build-boot/tmp/sun/java.security/.classes.list
LOG: [0x00007f877131c720] We received a SIGSEGV and tried to handle it, but we were
LOG: [0x00007f877131c720] unable to find a Java method at:
LOG: [0x00007f877131c720]
LOG: [0x00007f877131c720] PC=0x00007f87700f30e4
LOG: [0x00007f877131c720]
LOG: [0x00007f877131c720] Dumping the current stacktrace:
        at
java.lang.VMClass.getDeclaredFields(Ljava/lang/Class;Z)[Ljava/lang/reflect/Field;(Native
Method)
        at
java.lang.Class.getDeclaredFields(Z)[Ljava/lang/reflect/Field;(Class.java:481)
        at java.lang.Class.getDeclaredFields()[Ljava/lang/reflect/Field;(Class.java:476)
        at org.eclipse.jdt.internal.compiler.util.Messages.initializeMessages(Ljava/lang
/String;Ljava/lang/Class;)V(Messages.java:193)
        at
org.eclipse.jdt.internal.compiler.util.Messages.<clinit>()V(Messages.java:118)
        at org.eclipse.jdt.internal.compiler.Compiler.compile([Lorg/eclipse/jdt/internal
/compiler/env/ICompilationUnit;)V(Compiler.java:419)
        at
org.eclipse.jdt.internal.compiler.batch.Main.performCompilation()V(Main.java:3716)
        at org.eclipse.jdt.internal.compiler.batch.Main.compile([Ljava/lang/String;)Z(Ma
in.java:1666)
        at
org.eclipse.jdt.internal.compiler.batch.Main.main([Ljava/lang/String;)V(Main.java:1379)
LOG: [0x00007f877131c720] vm_abort: WARNING, port me to C++ and use os::abort() instead.
LOG: [0x00007f877131c720] Exiting...
LOG: [0x00007f877131c720] Backtrace (10 stack frames):
LOG: [0x00007f877131c720]
/home/andrew/build/cacao/lib/libjvm.so(_ZN2os15print_backtraceEv+0x1e) [0x7f876fd0863e]
LOG: [0x00007f877131c720] /home/andrew/build/cacao/lib/libjvm.so(vm_abort+0xb0)
[0x7f876fd15c00]
LOG: [0x00007f877131c720] /home/andrew/build/cacao/lib/libjvm.so(methodtree_find+0xaa)
[0x7f876fd2cb3a]
LOG: [0x00007f877131c720]
/home/andrew/build/cacao/lib/libjvm.so(stacktrace_stackframeinfo_add+0x138)
[0x7f876fd3f008]
LOG: [0x00007f877131c720] /home/andrew/build/cacao/lib/libjvm.so(trap_handle+0xfc)
[0x7f876fd4282c]
LOG: [0x00007f877131c720] /lib64/libpthread.so.0(+0xfd10) [0x7f8770d15d10]
LOG: [0x00007f877131c720] /lib64/libc.so.6(+0x11f0e4) [0x7f87700f30e4]
LOG: [0x00007f877131c720] /home/andrew/build/cacao/lib/libjvm.so(+0x911f9)
[0x7f876fd101f9]
LOG: [0x00007f877131c720]
/home/andrew/build/cacao/lib/libjvm.so(class_get_declaredfields+0x112) [0x7f876fcf9ad2]
LOG: [0x00007f877131c720] [0x7f877122fa3e]
/home/andrew/build/cacao-jdk/bin/javac: line 2: 24470 Aborted                 (core
dumped) /home/andrew/build/cacao/bin/cacao -classpath /usr/share/eclipse-ecj/ecj.jar
-Xmx1024m org.eclipse.jdt.internal.compiler.batch.Main "$@"
make[5]: *** [.compile.classlist] Error 134

It dumped a core but it's incomplete:

BFD: Warning: /mnt/builder/icedtea7/openjdk-boot/jdk/make/java/security/core is
truncated: expected core file size >= 23842816, found: 10514432.
[New Thread 24470]
[New Thread 24471]
[New Thread 24472]
[New Thread 24473]
Failed to read a valid object file image from memory.
Core was generated by `/home/andrew/build/cacao/bin/cacao -classpath /usr/share/eclipse-
ecj/ecj.jar -X'.

This is with tip:

changeset:   9421:4763cca44fb2
branch:      abc_fixes
tag:         tip
user:        Alexander Jordan <ajordan@complang.tuwien.ac.at>
date:        Tue Jun 21 12:03:02 2011 +0200
summary:     enabled debug output for ABC code

pulling from http://mips.complang.tuwien.ac.at/hg/cacao/

Please don't use named branches other than "default". They are mostly used as dumping
grounds for immature projects.

I'm not.  This is what I get from pulling from the main branch.

(In reply to comment #1)
> Please don't use named branches other than "default". They are mostly used as
> dumping grounds for immature projects.
>

As I understand it, the hg tip is a tag and independent from the checked out branch. So
this just means that Andrew's local repo is up to date.

Yeah, AFAIK I've not pulled anything over than the main branch, though I admit to having
never understood Mercurial branches.  We stayed away from them with IcedTea because they
don't seem to work well.

Hehe. In almost every Mercurial tutorial, you can (and should) replace most occurrences
of "tip" with "default" and be off so much the better.

Now I'm finally getting what you were saying. So are you bootstrapping icedtea7 with an
icedtea6/CACAO build? When I try to do that, I get OOM Exceptions.

No, with a GNU Classpath CVS and CACAO build.  Sorry I thought I said that in the
original post, but looks like I just posted the log.  I now have JamVM able to do it
with the same Classpath build FWIW.

Andrew, do you have any instructions for bootstrapping icedtea with CACAO/classpath? I
just can't get this to work.

Interesting, but unfortunately not reproducible.