Problems in GCJ
Deepak
jdeepak@indiainfo.com
Wed Jan 30 20:10:00 GMT 2002
hi ,
presently i am working in solaris 8.i tried to convert my java code
into native code.
Using GCJ ( from GNU) i tried to compile my java code and i got a
executable.
this GCJ version is 2.95.while running the executable ,it dumped
core(segmentation fault)
here is the code and trace
public class HelloWorld
{
public static void main( String arg[])
{
System.out.println("HelloWorld");
}
}
and the trace is ....
-------------------------------------------------------
test-05:/home/test/Java%> ls
HelloWorld HelloWorld.java
test-05:/home/test/Java%>gcj --main=HelloWorld -o HelloWorld
HelloWorld.java
test-05:/home/test/Java%> ./HelloWorld
Segmentation Fault (core dumped)
ipgen-05:/home/test/Java%> gdb HelloWorld core
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This GDB was configured as "sparc-sun-solaris2.8"...
Core was generated by `./HelloWorld'.
Program terminated with signal 11, Segmentation Fault.
Reading symbols from /usr/local/lib/libgcj.so.0...done.
Loaded symbols for /usr/local/lib/libgcj.so.0
Reading symbols from /lib/libm.so.1...done.
Loaded symbols for /lib/libm.so.1
Reading symbols from /usr/local/lib/libgcjgc.so.0...done.
Loaded symbols for /usr/local/lib/libgcjgc.so.0
Reading symbols from /usr/local/lib/libzgcj.so.0...done.
Loaded symbols for /usr/local/lib/libzgcj.so.0
Reading symbols from /lib/libsocket.so.1...done.
Loaded symbols for /lib/libsocket.so.1
Reading symbols from /lib/libnsl.so.1...done.
Loaded symbols for /lib/libnsl.so.1
Reading symbols from /lib/libdl.so.1...done.
Loaded symbols for /lib/libdl.so.1
Reading symbols from /lib/libc.so.1...done.
Loaded symbols for /lib/libc.so.1
Reading symbols from /lib/libmp.so.2...done.
Loaded symbols for /lib/libmp.so.2
Reading symbols from
/usr/platform/SUNW,Sun-Blade-100/lib/libc_psr.so.1...done.
Loaded symbols for /usr/platform/SUNW,Sun-Blade-100/lib/libc_psr.so.1
#0 _Jv_equalUtf8Consts (a=0x0, b=0xff2d4442) at
../../../libjava/prims.cc:89
89 ../../../libjava/prims.cc: No such file or directory.
(gdb) bt
#0 _Jv_equalUtf8Consts (a=0x0, b=0xff2d4442) at
../../../libjava/prims.cc:89
#1 0xff2a6b5c in _Jv_GetMethodLocal (klass=0xff31f7fc, name=0x0,
signature=0x0) at ../../../libjava/java/lang/natClass.cc:527
#2 0xff2a6918 in java::lang::Class::hackRunInitializers
(this=0xff31f7fc)
at ../../../libjava/java/lang/natClass.cc:416
#3 0xff2a3d58 in java.lang.Class.hackTrampoline (this=0xff31f7fc,
what=1,
old_exception=0x0) at ../../../libjava/java/lang/Class.java:137
#4 0xff2a6aa8 in java::lang::Class::initializeClass (this=0xff31f7fc)
at ../../../libjava/java/lang/natClass.cc:489
#5 0xff2a3d30 in java.lang.Class.hackTrampoline (this=0xff31f7fc,
what=0,
old_exception=0x0) at ../../../libjava/java/lang/Class.java:135
#6 0xff2a6a64 in java::lang::Class::initializeClass (this=0xff313990)
at ../../../libjava/java/lang/natClass.cc:475
#7 0xff2a6ce8 in _Jv_InitClass (klass=0xff313990)
at ../../../libjava/java/lang/natClass.cc:565
#8 0xff22fab0 in _Jv_AllocObject (c=0xff313990, size=32)
at ../../../libjava/prims.cc:266
#9 0xff2a955c in _Jv_AllocString (len=6) at
../../../libjava/include/cni.h:31
#10 0xff2a93bc in _Jv_NewStringUtf8Const (str=0x0)
at ../../../libjava/java/lang/natString.cc:226
#11 0xff2a6850 in java::lang::Class::resolveConstants
(this=0xff313990)
at ../../../libjava/java/lang/natClass.cc:392
#12 0xff2a697c in java::lang::Class::initializeClass (this=0xff313990)
---Type <return> to continue, or q <return> to quit---
at ../../../libjava/java/lang/natClass.cc:440
#13 0xff2a6ce8 in _Jv_InitClass (klass=0xff313990)
at ../../../libjava/java/lang/natClass.cc:565
#14 0xff22fab0 in _Jv_AllocObject (c=0xff313990, size=24)
at ../../../libjava/prims.cc:266
#15 0xff2a955c in _Jv_AllocString (len=2) at
../../../libjava/include/cni.h:31
#16 0xff2a93bc in _Jv_NewStringUtf8Const (str=0x0)
at ../../../libjava/java/lang/natString.cc:226
#17 0xff2a6850 in java::lang::Class::resolveConstants
(this=0xff31488c)
at ../../../libjava/java/lang/natClass.cc:392
#18 0xff2a697c in java::lang::Class::initializeClass (this=0xff31488c)
at ../../../libjava/java/lang/natClass.cc:440
#19 0xff2a3d30 in java.lang.Class.hackTrampoline (this=0xff31488c,
what=0,
old_exception=0x0) at ../../../libjava/java/lang/Class.java:135
#20 0xff2a6a64 in java::lang::Class::initializeClass (this=0xff31106c)
at ../../../libjava/java/lang/natClass.cc:475
#21 0xff2a3d30 in java.lang.Class.hackTrampoline (this=0xff31106c,
what=0,
old_exception=0x0) at ../../../libjava/java/lang/Class.java:135
#22 0xff2a6a64 in java::lang::Class::initializeClass (this=0xff312eb0)
at ../../../libjava/java/lang/natClass.cc:475
#23 0xff2a3d30 in java.lang.Class.hackTrampoline (this=0xff312eb0,
what=0,
old_exception=0x0) at ../../../libjava/java/lang/Class.java:135
#24 0xff2a6a64 in java::lang::Class::initializeClass (this=0xff3128d4)
---Type <return> to continue, or q <return> to quit---
at ../../../libjava/java/lang/natClass.cc:475
#25 0xff2a6ce8 in _Jv_InitClass (klass=0xff3128d4)
at ../../../libjava/java/lang/natClass.cc:565
#26 0xff22fab0 in _Jv_AllocObject (c=0xff3128d4, size=12)
at ../../../libjava/prims.cc:266
#27 0xff230298 in JvRunMain (klass=0x277c4, argc=1, argv=0xffbef9b4)
at ../../../libjava/prims.cc:576
#28 0x129b4 in main (argc=1, argv=0xffbef9b4)
Current language: auto; currently c++
(gdb)
------------------------------------------------
then i contacted Mr.Bryce at bryce@sourceware.cygnus.com
he suggested me to use the latest Gcc compiler.(i.e) 3.0.3 which has a
built in GCJ
i tried the same code using GCJ 3.0.3 ,it compiled correctly. i got
some linking errors
saying that libiconv?? missing.i tried downloading that library.after
that i am getting this
encoding Problem.
Here is the trace.....
--------
gcj --main=HelloWorld -o HelloWorld HelloWorld.java
HelloWorld.java:0: unknown encoding: `ISO8859-1'
This might mean that your locale's encoding is not supported
by your system's iconv(3) implementation. If you aren't trying
to use a particular encoding for your input file, try the
`--encoding=UTF-8' option.
compilation terminated
-------------
i hope you willl help me in solving this problem.
thanks,
Deepak
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