Bug 41617 - [4.4/4.5/4.6 regression] ObjC: Error: symbol `_OBJC_CLASS_AppController' is already defined
Summary: [4.4/4.5/4.6 regression] ObjC: Error: symbol `_OBJC_CLASS_AppController' is a...
Status: RESOLVED FIXED
Alias: None
Product: gcc
Classification: Unclassified
Component: objc (show other bugs)
Version: 4.4.2
: P4 normal
Target Milestone: 4.4.6
Assignee: Not yet assigned to anyone
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2009-10-07 09:51 UTC by Matthias Klose
Modified: 2010-11-23 09:29 UTC (History)
3 users (show)

See Also:
Host:
Target: arm-linux-gnueabi
Build:
Known to work: 4.3.4
Known to fail: 4.4.1, 4.5.0
Last reconfirmed: 2010-11-22 19:36:47

Attachments
preprocessed source (133.88 KB, application/x-bzip)
2009-10-07 09:52 UTC, Matthias Klose 		Details
assembler file (54.70 KB, application/x-bzip)
2009-10-07 09:53 UTC, Matthias Klose 		Details
preprocessed source (133.68 KB, application/x-bzip)
2009-10-07 09:53 UTC, Matthias Klose 		Details
assembler file (53.40 KB, application/x-bzip)
2009-10-07 09:54 UTC, Matthias Klose 		Details
preprocessed source (133.92 KB, application/x-bzip)
2009-10-07 15:15 UTC, Matthias Klose 		Details
Show Obsolete (1) View All Add an attachment (proposed patch, testcase, etc.)

Note You need to log in before you can comment on or make changes to this bug.
Description Matthias Klose 2009-10-07 09:51:31 UTC 
Seen with a lot of GNUstep applications:

gcc AppController.m -c \
              -MMD -MP -DGNUSTEP -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGNUSTEP_BASE_LIBRARY=1 -D_REENTRANT -fPIC -g -Wall -DDEBUG -fno-omit-frame-pointer -DGSWARN -DGSDIAGNOSE -Wno-import -O2 -fno-strict-aliasing -fexceptions -fobjc-exceptions -D_NATIVE_OBJC_EXCEPTIONS -fgnu-runtime -fconstant-string-class=NSConstantString -I. -I/usr/local/include/GNUstep -I/usr/include/GNUstep \
               -o obj/AppController.m.o
In file included from Date.h:4,
                 from Event.h:3,
                 from AppointmentEditor.h:3,
                 from AppController.m:4:
/usr/include/ical.h:22:2: warning: #warning "#include <ical.h> is deprecated.  Please #include <libical/ical.h> instead."
/tmp/ccdTn0Sv.s: Assembler messages:
/tmp/ccdTn0Sv.s:11021: Error: symbol `_OBJC_CLASS_AppController' is already defined
make[2]: *** [obj/AppController.m.o] Error 1
Comment 1 Matthias Klose 2009-10-07 09:52:35 UTC 
Created attachment 18735 [details]
preprocessed source
Comment 2 Matthias Klose 2009-10-07 09:53:08 UTC 
Created attachment 18736 [details]
assembler file
Comment 3 Matthias Klose 2009-10-07 09:53:31 UTC 
Created attachment 18737 [details]
preprocessed source
Comment 4 Matthias Klose 2009-10-07 09:54:00 UTC 
Created attachment 18738 [details]
assembler file
Comment 5 Jakub Jelinek 2009-10-07 12:57:45 UTC 
This doesn't even compile, you forgot NXConstStr.h stuff.
When it is added, it compiles just fine, at least on x86_64-linux and i686-linux, no assembler errors.
Comment 6 Matthias Klose 2009-10-07 15:15:42 UTC 
Created attachment 18740 [details]
preprocessed source

regenerated with objc/NXConstStr.h included.
Comment 7 Iain Sandoe 2010-11-07 14:18:43 UTC 
Is this still a problem?

I cannot reproduce this on i686-darwin9 on trunk or 4.5.2 with :

 ./gcc/xgcc -Bgcc ../tests/AppController_44.mi -c -fgnu-runtime -w
Comment 8 Nicola Pero 2010-11-22 17:39:07 UTC 
Matthias,

it looks like this may be an "arm-linux-gnueabi"-specific problem ... it does work for me (as for everyone else) on i686-pc-linux-gnu, but you're clearly on arm-linux-gnueabi.

Can you produce a smaller testcase?  Does it happen with all Objective-C classes?

Thanks
Comment 9 Matthias Klose 2010-11-22 17:56:29 UTC 
no, can't see this even with 4.4 now, on a system with binutils 2.21
Comment 10 Nicola Pero 2010-11-22 17:58:44 UTC 
So, can I close the bug ?

Thanks
Comment 11 Matthias Klose 2010-11-23 09:29:59 UTC 
works on armv5 too, current 4.4 branch and binutils 2.20.1