bugGNUstep - Bugs: bug #29996, fix to build base on openbsd i386


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bug #29996: fix to build base on openbsd i386

Submitted by:  Sebastian Reitenbach <buzzdee>
Submitted on:  Sun 30 May 2010 03:48:11 PM UTC  
Category:  Base/Foundation Severity:  3 - Normal
Item Group:  Change Request Status:  Fixed
Privacy:  Public Assigned to:  None
Open/Closed:  Closed

Sun 30 May 2010 06:04:35 PM UTC, comment #3: 

I added the fix to the stable branch

Richard Frith-Macdonald <CaS>
Project Member
Sun 30 May 2010 05:21:27 PM UTC, comment #2: 

Thanks a lot, that fix is doing it fine.

Sebastian Reitenbach <buzzdee>
Project Member
Sun 30 May 2010 04:07:47 PM UTC, comment #1: 

Does the change I just made in SVN trunk do the job?

Richard Frith-Macdonald <CaS>
Project Member
Sun 30 May 2010 03:48:11 PM UTC, original submission:  

In the OpenBSD ports tree there exists a patch against Source/NSObject.m to fix a problem on i386:

--- Source/NSObject.m.orig      Fri Dec 19 10:06:14 2008
+++ Source/NSObject.m   Tue Dec 23 14:00:22 2008
@@ -1127,7 +1127,7 @@ GSDescriptionForClassMethod(pcl self, SEL aSel)

-#if defined(_FreeBSD_) && defined(_i386_)
+#if defined(_FreeBSD_) || defined(_OpenBSD_) && defined(_i386_)
       // Manipulate the FPU to add the exception mask. (Fixes SIGFPE
       // problems on *BSD)
       // Note this only works on x86

The following code from 1.18:
+      {
+        volatile short cw;
+        _asm_ volatile ("fstcw (%0)" : : "g" (&cw));
+        cw |= 1; /* Mask 'invalid' exception */
+        _asm_ volatile ("fldcw (%0)" : : "g" (&cw));
+      }
was replaced in 1.20 with:

That worked well with gnustep-base-1.18.0. But now in gnustep-base-1.20.0, the compilation fails because FE_INVALID is not defined on OpenBSD. Therefore I reverted it back to use the old code, see the appended patch.

Otherwise the new code could stay as it is, and a unique
#if defined  defined(_OpenBSD_) && defined(_i386_)
for OpenBSD could be introduced, to not mix up the FreeBSD with OpenBSD stuff, don't know what is better.

I've just seen in the svn changes, that Richard is preparing a stable bugfix release. Would be great if a solution to this one could also go in there.


Sebastian Reitenbach <buzzdee>
Project Member


Attached Files
file #20653:  patch-Source_NSObject_m added by buzzdee (846B - application/octet-stream)


Depends on the following items: None found

Items that depend on this one: None found


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  • -email is unavailable- added by CaS (Posted a comment)
  • -email is unavailable- added by buzzdee (Submitted the item)

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2010-05-30 CaS StatusNone => Fixed
        Open/ClosedOpen => Closed
    2010-05-30 buzzdee Attached File- => Added patch-Source_NSObject_m, #20653

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