[Bug java/26138] New: Lots of warnings with gcj .jar -> .so

[Bug java/26138] New: Lots of warnings with gcj .jar -> .so

[overholt at redhat dot com]

When natively-compiling the Eclipse jars, I get lots of warnings similar to
this:

org/eclipse/swt/internal/SWTEventObject.java:0: warning:
'_otable_syms_org_eclipse_swt_internal_SWTEventObject' defined but not used
org/eclipse/swt/internal/SWTEventObject.java:0: warning:
'_itable_syms_org_eclipse_swt_internal_SWTEventObject' defined but not used

I am compiling this jar like this:

/usr/bin/gcj -c -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=pentium4
-fasynchronous-unwind-tables -fPIC -findirect-dispatch -fjni
/var/tmp/eclipse-3.1.2-1jpp_4fc-buildroot/usr/lib/gcj/eclipse/org.eclipse.swt.gtk.linux.x86_3.1.1.jar.1.jar
-o
/var/tmp/eclipse-3.1.2-1jpp_4fc-buildroot/usr/lib/gcj/eclipse/org.eclipse.swt.gtk.linux.x86_3.1.1.jar.1.jar.o

$ gcj --version
gcj (GCC) 4.1.0 20060131 (Red Hat 4.1.0-0.20)

i386


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           Summary: Lots of warnings with gcj .jar -> .so
           Product: gcc
           Version: 4.1.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: java
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: overholt at redhat dot com


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26138

[Bug java/26138] Lots of warnings with gcj .jar -> .so

[tromey at gcc dot gnu dot org]

-- 

tromey at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |tromey at gcc dot gnu dot
                   |                            |org
             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|0                           |1
   Last reconfirmed|0000-00-00 00:00:00         |2006-02-06 20:37:07
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26138

[Bug java/26138] Lots of warnings with gcj .jar -> .so

[pinskia at gcc dot gnu dot org]

------- Comment #1 from pinskia at gcc dot gnu dot org  2006-02-06 20:59 -------
Hmm:
http://gcc.gnu.org/ml/java-patches/2003-q3/msg00722.html

I thought this was fixed.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26138

[Bug java/26138] Lots of warnings with gcj .jar -> .so

[tromey at gcc dot gnu dot org]

------- Comment #2 from tromey at gcc dot gnu dot org  2006-02-06 21:05 -------
Testing a patch.

This may have been fixed, but it fails now.
Setting TREE_USED on the syms decl in GEN_TABLE fixes it.
But maybe that is just papering over the bug?


-- 

tromey at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|unassigned at gcc dot gnu   |tromey at gcc dot gnu dot
                   |dot org                     |org
             Status|NEW                         |ASSIGNED
   Last reconfirmed|2006-02-06 20:37:07         |2006-02-06 21:05:38
               date|                            |


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26138

[Bug java/26138] Lots of warnings with gcj .jar -> .so

[tromey at gcc dot gnu dot org]

------- Comment #3 from tromey at gcc dot gnu dot org  2006-02-07 19:23 -------
I looked at this a bit more.

We don't want to set TREE_USED on the itable syms decl, because
that will still cause it to be emitted, even though it is not used.
It would be preferable to not create the various decls here unless we
know for sure that they will be used.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26138

[Bug java/26138] Lots of warnings with gcj .jar -> .so

[tromey at gcc dot gnu dot org]

------- Comment #4 from tromey at gcc dot gnu dot org  2006-03-15 20:19 -------
This was fixed on the trunk by:

2006-02-15  Andrew Haley  <aph@redhat.com>

        * class.c (GEN_TABLE): Don't pushdecl *_SYMS_DECL here.
        (make_class_data): pushdecl_top_level TYPE_OTABLE_SYMS_DECL,
        TYPE_ATABLE_SYMS_DECL, TYPE_ITABLE_SYMS_DECL here.

I don't think it was put in 4.1.x -- do we want it there?


-- 

tromey at gcc dot gnu dot org changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|ASSIGNED                    |RESOLVED
         Resolution|                            |FIXED
   Target Milestone|---                         |4.2.0


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26138

[Bug java/26138] Lots of warnings with gcj .jar -> .so

[aph at gcc dot gnu dot org]

------- Comment #5 from aph at gcc dot gnu dot org  2006-03-15 23:15 -------
Oh yes, definitely.  It was just waiting for the branch to be unfrozen.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=26138