[Bug libgcj/27101] New: GCJ rejects valid code (for Sun's measure of "valid')

[Bug libgcj/27101] New: GCJ rejects valid code (for Sun's measure of "valid')

[vnasardinov at gmail dot com]

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This is probably a duplicate of something that has been filed before,
but my cursory search failed to turn up any similar tickets.

GCJ rejects code that both Sun and Eclipse compilers accept.

Here's the test case:

| $ cat Reluctant.java
| public class Reluctant {
|     private Reluctant internalInstance = new Reluctant();
|
|     public Reluctant() throws Exception {
|         throw new Exception("I'm not coming out");
|     }
|
|     public static void main(String[] args) {
|         try {
|             Reluctant b = new Reluctant();
|             System.out.println("Surprise!");
|         } catch (Exception ex) {
|             System.out.println("I told you so");
|         }
|     }
| }

The test comes from
http://www.javapuzzlers.com/java-puzzlers.zip


Here's what I'm using

| $ gcj -v
| Using built-in specs.
| Reading specs from /usr/lib/gcc/x86_64-redhat-linux/4.1.0/libgcj.spec
| rename spec lib to liborig
| Target: x86_64-redhat-linux
| Configured with: ../configure --prefix=/usr --mandir=/usr/share/man \
|  --infodir=/usr/share/info --enable-shared --enable-threads=posix \
|  --enable-checking=release --with-system-zlib --enable-__cxa_atexit \
|  --disable-libunwind-exceptions --enable-libgcj-multifile \
|  --enable-languages=c,c++,objc,obj-c++,java,fortran,ada \
|  --enable-java-awt=gtk --disable-dssi \
|  --with-java-home=/usr/lib/jvm/java-1.4.2-gcj-1.4.2.0/jre \
|  --with-cpu=generic --host=x86_64-redhat-linux
|
| Thread model: posix
| gcc version 4.1.0 20060304 (Red Hat 4.1.0-3)

Here's the compilation error the above code triggers:

| $ gcj -C Reluctant.java
| Reluctant.java: In class 'Reluctant':
| Reluctant.java: In method 'finit$()':
| Reluctant.java:2: error: Exception ^[$-1òøjava.lang.Exceptionòù can't be
thrown in initializer.
|     private Reluctant internalInstance = new Reluctant();
|                                                 ^
| 1 error

Here's what the Eclipse compiler has to say:

| $ ecj -v
| Eclipse Java Compiler v_585_R31x, 3.1.2 release, Copyright IBM Corp 2000,
2006. All rights reserved.
| $ ecj Reluctant.java
| ----------
| 1. WARNING in Reluctant.java
|  (at line 2)
|       private Reluctant internalInstance = new Reluctant();
|                         ^^^^^^^^^^^^^^^^
| The field Reluctant.internalInstance is never read locally
| ----------
| ----------
| 2. WARNING in Reluctant.java
|  (at line 10)
|       Reluctant b = new Reluctant();
|                 ^
| The local variable b is never read
| ----------
| 2 problems (2 warnings)

No errors.

Same with Sun's javac:

| $ javac -version 2>&1 | head -n1
| javac 1.5.0_06
| $ javac -Xlint Reluctant.java
| $ echo $?
| 0


-- 
           Summary: GCJ rejects valid code (for Sun's measure of "valid')
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: libgcj
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: vnasardinov at gmail dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27101

[Bug java/27101] GCJ rejects valid code (for Sun's measure of "valid')

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-04-10 16:30 -------
Please next time if you going to put the testcase inline don't put stuff in
front of the testcase so it can be easy to access.


Anyways confirmed.


-- 

pinskia at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|UNCONFIRMED                 |NEW
          Component|libgcj                      |java
     Ever Confirmed|0                           |1
           Keywords|                            |rejects-valid
   Last reconfirmed|0000-00-00 00:00:00         |2006-04-10 16:30:38
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27101

[Bug java/27101] GCJ rejects valid code (for Sun's measure of "valid')

[vnasardinov at gmail dot com]

------- Comment #2 from vnasardinov at gmail dot com  2006-04-10 18:12 -------
Tom Fitzsimmons stopped complaining about my pipe-quoting technique
after I told him about "M-x delete-rectangle" a.k.a. "C-x r d".  Takes
about 5 seconds in Emacs to fix this up. One, if you type really fast :)

Thanks for looking at this.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27101

[Bug java/27101] GCJ rejects valid code (for Sun's measure of "valid')

[pinskia at gcc dot gnu dot org]

------- Comment #3 from pinskia at gcc dot gnu dot org  2006-04-10 18:24 -------
(In reply to comment #2)
> Tom Fitzsimmons stopped complaining about my pipe-quoting technique
> after I told him about "M-x delete-rectangle" a.k.a. "C-x r d".  Takes
> about 5 seconds in Emacs to fix this up. One, if you type really fast :)
> Thanks for looking at this.

Who uses emacs, I am serious, I don't.


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27101

[Bug java/27101] GCJ rejects valid code (for Sun's measure of "valid')

[tromey at gcc dot gnu dot org]

------- Comment #4 from tromey at gcc dot gnu dot org  2006-04-12 17:38 -------
I thought this looked like a dup, but I can't find the original.
In any case, ISTR looking at the logic here in gcj at one point,
and finding that it was all screwed up.

Pinski: you can do:  sed 's/^.//d' > File.java  and then cut
and paste...


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27101

[Bug java/27101] GCJ rejects valid code (for Sun's measure of "valid')

[tromey at gcc dot gnu dot org]

------- Comment #5 from tromey at gcc dot gnu dot org  2007-01-09 20:48 -------
All gcj front end bugs have been fixed by the gcj-eclipse branch merge.
I'm mass-closing the affected PRs.
If you believe one of these was closed in error, please reopen it
with a note explaining why.
Thanks.


-- 

tromey at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.3.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=27101