[Bug java/12908] New: gnu.gcj.convert.Input_UTF8 not found

[Bug java/12908] New: gnu.gcj.convert.Input_UTF8 not found

[oyvind dot harboe at zylin dot com]

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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908

           Summary: gnu.gcj.convert.Input_UTF8 not found
           Product: gcc
           Version: 3.4
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: java
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: oyvind dot harboe at zylin dot com
                CC: gcc-bugs at gcc dot gnu dot org

I'll attach the necessary files.

C:\eclipse3\workspace\SendMail>\wingcc\bin\gcj PrintFile.java -o print --
main=PrintFile
C:\eclipse3\workspace\SendMail>print testfile.txt
java.io.UnsupportedEncodingException: UTF8 (java.lang.ClassNotFoundException: 
gnu.gcj.convert.Input_UTF8 not found in [file:.\, core:/])
   at __ZN9PrintFile4mainEP6JArrayIPN4java4lang6StringEE (C:\eclipse3\workspace\
SendMail\PrintFile.java:15)
   at _/datal/gcc/gcc/gcc/libgcc2.c:0 (Unknown Source)
   at _/datal/gcc/gcc/gcc/libgcc2.c:0 (Unknown Source)
   at _/datal/gcc/gcc/gcc/libgcc2.c:0 (Unknown Source)
   at _/datal/gcc/gcc/gcc/libgcc2.c:0 (C:\eclipse3\workspace\SendMail\main)
   at _c:/temp/ccL2daaa.i:0 (Unknown Source)
   at _natClass.cc:0 (Unknown Source)
   at _natClass.cc:0 (Unknown Source)

C:\eclipse3\workspace\SendMail>java -cp . PrintFile testfile.txt
aklsfj
asdl°k
asdlk°lsadf

[Bug java/12908] gnu.gcj.convert.Input_UTF8 not found

[oyvind dot harboe at zylin dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908



------- Additional Comments From oyvind dot harboe at zylin dot com  2003-11-05 09:43 -------
Created an attachment (id=5063)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=5063&action=view)
Java program

[Bug java/12908] gnu.gcj.convert.Input_UTF8 not found

[oyvind dot harboe at zylin dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908



------- Additional Comments From oyvind dot harboe at zylin dot com  2003-11-05 09:44 -------
Created an attachment (id=5064)
 --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=5064&action=view)
Testvector

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908


pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
          Component|java                        |libgcj


------- Additional Comments From pinskia at gcc dot gnu dot org  2003-11-05 14:28 -------
It works for me on the mainline (20031018) on powerpc-apple-darwin.

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found

[pinskia at gcc dot gnu dot org]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908



------- Additional Comments From pinskia at gcc dot gnu dot org  2003-11-05 15:03 -------
It also works on i686-pc-linux-gnu on the mainline (20031104).

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found

[green at redhat dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908


green at redhat dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |ASSIGNED
     Ever Confirmed|                            |1
   Last reconfirmed|0000-00-00 00:00:00         |2003-11-05 15:24:11
               date|                            |


------- Additional Comments From green at redhat dot com  2003-11-05 15:24 -------
The original problem is being reported on Windows, where gcj only does static
linking.  Input_UTF8 is being loaded via Class.forName() in this case, so you're
in trouble if you have a static image without that class.

The fix is to stick this in your code somewhere:

 private static Class c1 = gnu.gcj.convert.Input_UTF8.class;

This will force Input_UTF8 into your static image.

AG

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found

[oyvind dot harboe at zylin dot com]

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PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908



------- Additional Comments From oyvind dot harboe at zylin dot com  2003-11-05 17:17 -------
>The original problem is being reported on Windows, where gcj only 
>does static linking.  Input_UTF8 is being loaded via Class.forName() 
>in this case, so you're in trouble if you have a static image without 
>that class.
>
>The fix is to stick this in your code somewhere:
>
> private static Class c1 = gnu.gcj.convert.Input_UTF8.class;
>
>This will force Input_UTF8 into your static image.

This is scary.

How can I enumerate the hidden libgcj classes I need?


Øyvind

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found

[oyvind dot harboe at zylin dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908



------- Additional Comments From oyvind dot harboe at zylin dot com  2003-11-05 19:42 -------
I don't think the .class files generated by Eclipse are to blame:


C:\eclipse\workspace\SendMail>\wingcc\bin\gcj -C HelloWorld.java

C:\eclipse\workspace\SendMail>\wingcc\bin\gcj --main=HelloWorld -o hello HelloWo
rld.class

C:\eclipse\workspace\SendMail>hello
Exception in thread "main" java.lang.NoClassDefFoundError: gnu.gcj.convert.Input
_UTF8 not found in [file:.\, core:/]
   at __ZN10HelloWorld6class$$EPN4java4lang6StringE (C:\eclipse\workspace\SendMa
il\HelloWorld.class)
   at __ZN10HelloWorld18__U3c_clinit__U3e_Ev (C:\eclipse\workspace\SendMail\Hell
oWorld.class)
   at __ZN10HelloWorld4mainEP6JArrayIPN4java4lang6StringEE (C:\eclipse\workspace
\SendMail\HelloWorld.class)
   at _main (c:\temp\ccawbaaa.i)

C:\eclipse\workspace\SendMail>

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found when compiling from bytecode.

[green at redhat dot com]

PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908


green at redhat dot com changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|green at gcc dot gnu dot org|unassigned at gcc dot gnu
                   |                            |dot org
             Status|ASSIGNED                    |NEW
            Summary|gnu.gcj.convert.Input_UTF8  |gnu.gcj.convert.Input_UTF8
                   |not found                   |not found when compiling
                   |                            |from bytecode.


------- Additional Comments From green at redhat dot com  2003-11-05 22:38 -------
Something is definitely weird.  The object file from compiling HelloWorld.class
doesn't have a symbolic reference to the Input_UTF8 class, although the one
bulit from the .java file does. 

I think this is a real compiler bug and outside my direct area of expertise.  

AG

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found when compiling from bytecode.

[oyvind dot harboe at zylin dot com]

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PLEASE REPLY TO gcc-bugzilla@gcc.gnu.org ONLY, *NOT* gcc-bugs@gcc.gnu.org.

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908



------- Additional Comments From oyvind dot harboe at zylin dot com  2003-11-06 08:43 -------
Note that I believe that there are two completely seperate problems that needs 
to be addressed here:

1. The problem of how to enumerate all classes that a program depends upon. 
This is IMHO, impossible due to dynamic class creation.
2. The strange .java vs. .class compilation problem.

Øyvind

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found when compiling from bytecode.

[tromey at gcc dot gnu dot org]

------- Additional Comments From tromey at gcc dot gnu dot org  2003-11-08 19:38 -------
The "foo.class" syntax can't be represented
directly in a .class file.  (The basic problem
is that ldc can't load a class constant; I hear
this restriction might be lifted.)
Instead "foo.class" is compiled as a call to
Class.forName("foo"), which of course breaks
the linking approach.  When compiling from .java,
we just emit a symbolic reference to the class.

The workaround is to always compile this sort
of hacky class from .java.  Another workaround
is to force a symbol provided by the class to 
be undefined; you can do this by passing arguments
to the linker.

There is no way to enumerate the classes you need.
This is one fundamental problem with static linking.
These classes are internal implementation details.
We don't want to link them all in, since that would
cause a lot of bloat (and one reason for static
linking is smaller systems).

There are lots of ideas on how to solve this.  None
are implemented.

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found when compiling from bytecode.

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2003-11-11 17:42 -------
Since static linking has never worked with the GNU linker (because it removes too much from the 
resulting file), this is an enhancement.  

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
           Severity|normal                      |enhancement


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found when compiling from bytecode.

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2003-11-26 15:46 -------
*** Bug 12985 has been marked as a duplicate of this bug. ***

-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found when compiling from bytecode.

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2003-11-26 15:46 -------
*** Bug 13196 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |hamano at hyper dot linc dot
                   |                            |or dot jp


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found when compiling from bytecode.

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-03-18 16:56 -------
*** Bug 14636 has been marked as a duplicate of this bug. ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |erwin at klomp dot org


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908

[Bug libgcj/12908] gnu.gcj.convert.Input_UTF8 not found when compiling from bytecode.

[pinskia at gcc dot gnu dot org]

------- Additional Comments From pinskia at gcc dot gnu dot org  2004-03-19 05:04 -------
This is a dup of bug 13708.

*** This bug has been marked as a duplicate of 13708 ***

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |DUPLICATE


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=12908