Name: clC74495 Date: 12/01/99


Using old-style NMI native methods together with the sunwjit JIT compiler
on JDK 1.2.2 on Solaris/x86, the first ("this") parameter to a static native
method is not null, as it should be (per Arnold & Gosling first edition
A.2.2). If the JIT compiler is turned off, the correct result is
obtained.

I believe this bug has been present in 1.1.x versions of sunwjit as well.

$ uname -a
SunOS king 5.6 Generic_105182-03 i86pc i386 i86pc

$ /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//bin/java -version
java version "1.2.2"
Classic VM (build JDK-1.2.2-001, green threads, sunwjit)

$ cat caller.java
class ABC { }

public class caller {
        public static native void nm1(ABC a);

        public static void main(String args[]) {
                ABC a = new ABC();
                nm1(a);
                System.exit(0);
        }

        static {
                System.loadLibrary("nm");
        }
}

$ cat nm.c
#include "caller.h"

#include <stdio.h>

void caller_nm1(struct Hcaller *s, struct HABC * a) {
        printf("Should be null, is %s\n", s ? "not null" : "null");
        printf("Should be not null, is %s\n", a ? "not null" : "null");
}

$ CC=`whence cc` JDK_ROOT=$j122b ./mk
+ rm -f caller.o nm.o libnm.so caller.c caller.h ABC.class caller.class
+ [ == clean ]
+ JDK_ROOT=/java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2/
+ CC=/export/home/SUNWspro/bin/cc
+ export CLASSPATH=.:
+ export LD_LIBRARY_PATH=.:
+ /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//bin/javac caller.java
+ /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//bin/javah -old caller
+ /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//bin/javah -old -stubs caller
+ /export/home/SUNWspro/bin/cc -I /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//include-old -I /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//include-old/solaris -KPIC caller.c nm.c -G -o libnm.so
caller.c:
nm.c:
+ /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//bin/java caller
Should be null, is not null <<--- this is the bug
Should be not null, is not null
$
$ JAVA_COMPILER= CC=`whence cc` JDK_ROOT=$j122b ./mk
+ rm -f caller.o nm.o libnm.so caller.c caller.h ABC.class caller.class
+ [ == clean ]
+ JDK_ROOT=/java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2/
+ CC=/export/home/SUNWspro/bin/cc
+ export CLASSPATH=.:
+ export LD_LIBRARY_PATH=.:
+ /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//bin/javac caller.java
+ /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//bin/javah -old caller
+ /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//bin/javah -old -stubs caller
+ /export/home/SUNWspro/bin/cc -I /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//include-old -I /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//include-old/solaris -KPIC caller.c nm.c -G -o libnm.so
caller.c:
nm.c:
+ /java/JDK-1_2_2_001-FCS.BINARY/jdk1.2.2//bin/java caller
Should be null, is null
Should be not null, is not null
$
(Review ID: 98424)
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